-
M/s. Devbhumi Realtors Pvt. Ltd.,SURVEY NO. 83/1, RAIDURG
PANMAKHTA,
SERILINGAMAPALLY, RANGA REDDY DISTRICT
Conceptual Plan
Commercial Office Construction Project
Submitted ByM/s. Devbhumi Realtors Pvt. Ltd.Salarpuria Cyber
Park, Sy No. 67/P,Adjacent to Shilparamam,Hitech City,
Madhapur,Hyderabad 500 081Phone- 040 - 2311 7211
Studies & Documentation byM/s Team Labs and Consultants(An
ISO Certified Organization)B-115 -117 & 509, Annapurna
Block,Aditya Enclave, Ameerpet,Hyderabad- 500 038Phone:
91-040-23748555/616Fax : 91-040-23748666e-mail:
[email protected]
SUBMITTED TOSTATE LEVEL ENVIRONMENT IMPACT ASSESSMENT
AUTHORITY
TELANGANAGOVERNMENT OF INDIA
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Devbhumi Realtors Pvt. Ltd. Environmental Impact Statement
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2.0 PROJECT DESCRIPTION/CONCEPTUAL PLAN
This chapter details the need for the project, description of
the proposed project andalternatives, and identifies the valued
ecosystem components. The project is envisagedto provide build to
suit office space for the Information Technology sector in
Madhapurof Serilingampally area. This area adjacent to the
Kukatpally Municipality is part of theprincipal growth corridor of
Hyderabad from 1995 onwards. The area around thisproject site is
known as Hi-Tec City providing office infrastructure and business
supportfor computer software companies working in the electronics,
telecommunications,engineering, and finance sectors. The area is
connected to the residential areas ofKondapur, Gachibowli,
Mehdipatnam, Banjarahills, Ameerpet, and Kukatpally, whichhave a
wide variety of housing for various socio economic classes. The
site area fallsunder Cyberabad Development Authority area and IALA
constituted by government ofTelangana under the aegis of TSIIC. The
area has become the hub of informationtechnology business, and the
state government designated this area for IT knowledgeparks, Indian
Institute of Information Technology, Indian school of Business, CMC
andthe University of Hyderabad as part of developing Hyderabad as a
knowledge capitaland encouraged development of commercial space in
the order of 3 million square feet,enhancing the employment
opportunities. The demand for business space for IT andfinancial
sectors on built to suit and ready to build basis is increasing
constantly in viewof the growing interest in Hyderabad as an IT
destination. There are variousdevelopments in the area, which is
facilitating the location of IT industry. The areaboasts of state
of the art buildings of cyber city, cyber pearl, cyber gateway, The
V, etc.
2.1 THE PROJECT LOCATIONThe project will be spread over an area
of 4.25 hectares in Survey no. 83/1, RaidurgPanmakhta,
Serilingamapally Municipality, Ranga Reddy District. The site is
surroundedby open lands in all the directions except in north and
south directions. An 45 m wideroad in south direction connecting
Mind space Junction and Old Bombay road. Thenearest railway station
is the Hi-tech City railway Station at a distance of 3.9 km.
2.2 PROJECT DESCRIPTION
2.2.1 DESIGN STAGEThe principles of low impact development are
adopted during the design stage toensure storm water percolation,
treated water reuse, energy conservation, andoptimized usage of
renewable resources. The Area Statement for the proposed
officebuilding is presented in table in table 2.1.
It is proposed to develop an office building has 4 Basement
floors for parking and G+16floors for office. The land allocation
will be optimized to ensure compliance with theFAR regulations of
HMDA. The water requirement of the project during operation willbe
drawn from HMWSSB. Sewage treatment plant will be provided to treat
thewastewater. Water conservation measures will be incorporated in
the plumbingdesigns. Water recycling/reuse will be adopted by way
of using treated sewage fortoilet flush systems and green belt
development. The treated effluent and storm waterwill be let-out
into the storm water drain, which will join the drains. The
required power
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Devbhumi Realtors Pvt. Ltd. Environmental Impact Statement
Team Labs and Consultants2 - 2
will be drawn from the TRANSCO and the energy requirement will
be optimized byadopting energy efficient design for lighting and
for HVAC systems. Constructionmaterials will be drawn from local
sources. The parking provision exceeds the guidelinesprescribed by
FAR and Building policy. The layout of the project site and plan
ofindividual floors is presented in fig. 2.1 and fig. 2.2.
Table 2.1 Area Statement for the proposed Building
Land Use Total SiteArea (m2)Built up area (m2)
Parking Office TotalBasement 1
12082.9
46166.6 46166.6Basement 2 35484.5 35484.5Basement 3 35948.4
35948.4Basement 4 35305.6 35305.6Ground Floor 12082.9 12082.91st
floor 11810.6 11810.62nd floor 16228.0 16228.03rd floor 13299.2
13299.24th floor 15175.8 15175.85th floor 15860.6 15860.66th floor
14178.0 14178.07th floor 12718.5 12718.58th floor 13299.2
13299.29th floor 13299.2 13299.210th floor 12642.4 12642.411th
floor 12718.5 12718.512th floor 13299.2 13299.213th floor 13299.2
13299.214th floor 12642.4 12642.415th floor 12718.5 12718.516th
floor 13299.2 13299.2Terrace floor 1762.2 1762.2Green area
6007.5Road area 10201.8Open area 13046.8Surface parking 1168.3
Total 42507.3 152905.1 230333.8 383238.9
PARKING PROVISIONIt is proposed to provide 4 Basement floors for
parking. The parking provision followsthe guidelines prescribed by
HMDA and Building policy. The number of parking spacesprovided is
presented in table 2.3. The parking floor plans are presented in
fig. 2.2.
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Devbhumi Realtors Pvt. Ltd. Environmental Impact Statement
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Table 2.2 Parking Space Provision of the ProjectFloor 4-Wheeler
2-WheelerBasement 1 1093 320Basement 2 1050 315Basement 3 1068
320Basement 4 1912 467Surface parking 92Total 5215 1422
CIRCULATION PLAN
Ground Floor Driveway : 9.0 m No. of Basements: 4 nos. No. of
Ramps : 6 Width of Ramp : 4.5 m Slope of Ramp : 1 in 8 No. of Lifts
: 48 Capacity of each Lift: 15 pax. Connecting Road : 45 m ROW
Modified Los & Performance
RoadExistingvolume,PCU/hr
Existingvolume/Capacity
Additionalvolume
ModifiedVolume
ModifiedVolume/Capacity
ModifiedLos &
performance
Site road 984 0.273 224 1208 0.336 B VeryGood
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Devbhumi Realtors Pvt. Ltd. Environmental Impact Statement
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Fig 2.1 Site layout
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Devbhumi Realtors Pvt. Ltd. Environmental Impact Statement
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Fig. 2.2 Typical Floor Plans
TERRACE
2nd FLOOR
3rd FLOOR
4th FLOOR
5th FLOOR
7th FLOOR
8th FLOOR
9th FLOOR
10th FLOOR
6th FLOOR
11th FLOOR
12th FLOOR
13th FLOOR
14th FLOOR
15th FLOOR
16th FLOOR
1st FLOOR
GROUND
BASEMENT-01
BASEMENT-02
BASEMENT-03
BASEMENT-04
590.80
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Devbhumi Realtors Pvt. Ltd. Environmental Impact Statement
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Fig. 2.3 Parking Floor Plans
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Devbhumi Realtors Pvt. Ltd. Environmental Impact Statement
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2.2.1.1 Storm water drains: Storm water drains will be provided
all over the site tomeet the expected increase in the runoff during
rainy seasons due to the imperviousnature of the roads and other
paved areas. The site is uneven and it is proposed tomaintain the
levels as much as possible.
For each plot rainwater pipes shall be designed for rainfall
intensity of 40mm/hour fromterrace floor to be harvested by storm
water sumps adjacent to each building, excessdisposed to external
storm water lateral drain running adjacent to the periphery of
thecampus. The storm water drain has been worked taking into
consideration the siteprofile (contour). The Rainwater Harvesting
Structures is shown in fig 2.4.
The rainwater collected from the building and from the other
surfaces of the plot isharvested by 1 no. of sump overflow being
discharged to this municipal sewer lines.Before the storm water
enters the sump I shall be passed through silt trap & grease
trapfor removal of silt & oil if any. Harvested water shall be
used for landscaping & fordomestic use.
Storm water drains will be provided all over the site to meet
the expected increase inthe runoff during rainy seasons due to the
impervious nature of the paved areas. Thesite is uneven and it is
proposed to maintain the levels as much as possible, hencestorm
water outlets from the site are anticipated. The expected runoff is
calculated forthe design of the storm water management is presented
in following table 2.3.
CALCULATION FOR STORM WATER DRAIN:Quantity of storm water:(a)
With out project:Area of Catchment, A : 4.2507 HaRun off
Coefficient, C : 0.6Maximum intensity of rainfall, I : 40
mm/hrTherefore Q : 0.283 m3/sec
(b) With project: :Area for catchment for roof and road : 2.228
Ha
Area of Catchment, A : 2.228 HaRun off Coefficient, C :
0.9Maximum intensity of rainfall, I : 40 mm/hrTherefore Q = : 0.223
m3/sec
Area for catchment for open areas : 2.022 HaRun off Coefficient,
C : 0.6Maximum intensity of rainfall, I : 40 mm/hrTherefore Q = :
0.135 m3/secTotal Discharge : 0.358 m3/secBut, Discharge, Q = A/V
:
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Devbhumi Realtors Pvt. Ltd. Environmental Impact Statement
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Where, :A= Area of the Drain, :
V= Max. Permissible Velocity : 6m/sec for concrete
drain
Area of drain, A = Q/V : 0.06 m2
Taking depth of drain as 0.6 m at the startingpoint : 0.6Width
of drain = Area/depth = 0.099 m 99 mm
Width of the drain is to taken 100 mm and depth varies according
to the slope ofground.
Table 2.3. Storm Water CalculationLandUse
Area inHectares
Vol./hrafter
developmentC=0.8
Vol./hrbeforeDevelopmentC=0.6
Differencein
Discharges
Remarks
RoofArea 1.21 386.7 290.0 96.7
Harvested in sump with acapacity of 100 m3
RoadArea 1.02 326.5 244.8 81.6 21 nos. of RWH pits areprovided
of size
1.5m X 1.5m X 2.0 mOpenArea 2.02 242.7* 485.3 -242.7
TOTAL 4.25 -64.4*C=0.3 after development of greenery
Rainwater Harvesting:The quantity of rainwater, which can be
harvested, depends upon the annual rainfall,the area of the plot
(catchment area) and soil characteristics. The amount of
waterinfiltrated into soil varies with the condition of soil
surface and the moisture content ofthe soil at the time of
rainfall. The total amount of water infiltered depends on
theinfiltration opportunity time, which depends mainly on the slope
of the land and thefield structure like contour bunds, terraces and
other structures, which tend to hold therunoff water over long
periods on the land surface.
1. Rainwater Harvesting Pits
2. Harvesting by sumps
Roof top water shall be used for domestic purpose/landscaping
after filtration &disinfection.
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Devbhumi Realtors Pvt. Ltd. Environmental Impact Statement
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Fig 2.4 Rainwater Harvesting Structures
2.2.1.2 Water Availability:Water is required for the
construction as well as during occupation stage as the same isan
important resource. The water requirement during construction is in
the order of110 cum/day with a peak demand of 220 cum/day, and
during occupation stage in theorder of 828.0 KLD. The water
resource available with the Municipal authorities wasstudied to
identify the source and feasibility. The water resource both
domestic waterand sewage is dealt by the Hyderabad Metropolitan
water supply and Sewerage Board(HMWSSB) in the GHMC area. The
HMWSSB has been maintaining the water supplyresources for Hyderabad
along with the treatment of wastewater. The resourcesavailable with
the HMWSSB are presented in table 2.4.
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Devbhumi Realtors Pvt. Ltd. Environmental Impact Statement
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Table 2.4 Details of present sources of water supply to
Hyderabad
Source Name River Year ImpoundmentNameDistance from
city kmInstalled
Capacity MGDOsmansagar Musi 1920 Osmansagar 15 27
Himayatsagar ESI 1927 Himayatsagar 9.6 18Manjira Phase I Manjira
1965 Manjira barrage 58 15Manjira Phase II Manjira 1981 Manjira
barrage 59 30Manjira Phase III Manjira 1991 Singur Dam 80 37Manjira
Phase IV Manjira 1993 Singur Dam 80 38Krishna Phase I Krishna 2005
Nagarjuna Sagar 116 90Krishna Phase II Krishna 2008 Nagarjuna Sagar
116 90Krishna Phase III Krishna 2015 Nagarjuna Sagar 116 90Godavari
Phase I Godavari 2016 Yellampally 186 172
Source: Hyderabad Metropolitan Water Supply & Sewerage
Board,www.hyderabadwater.gov.in
It may be noted that the following water supply projects i.e.,
Krishna Phase III (Part II)with 45 MGD capacity and Godavari phase
I with 172 MGD capacity is anticipated tobe operational during 2015
and 2016 respectively. It may also be noted that thedependability
of Osman sagar and Himiyath sagar is reduced to approximately 60%.
45MGD supply is available.
Domestic Water: It is proposed to draw domestic water from the
HyderabadMetropolitan water supply and Sewerage Board (HMWSSB),
which has beenencouraging the bulk consumers. The water shortage if
any during summer season willbe drawn from ground water sources.
The water requirement during construction willbe from ground water
sources and the requirement is in the order of 110 cum/day.
Thewater requirement of the project during occupation stage is in
the order of 828.0 KLD.The water requirement for the project during
the occupation stage is presented in table2.5. The Water Balance
for the project is presented in table 2.7.
Table 2.5 Water Requirement of the Project
Description Total No. ofPersonsWater requirement
lpdTotal Water
Requirement in KLDOffice 18400 45 828.0Total 18400 828.0
The water requirement shall be reduced by adopting Dual plumbing
system: Separatetank is provided to store the treated water; the
tank shall be 1 foot below the overheadtank. Separate pipe system
is provided to pump the treated water for flushing. All thetreated
water pipelines shall be colored blue. Separate line in the blocks
to use treatedwastewater for flushing purpose. The total saving is
as follows;
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Devbhumi Realtors Pvt. Ltd. Environmental Impact Statement
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Table 2.6 Water Savings Proposed
Description No. ofPersons
WaterRequirement in
KLD
Treated waterreuse KLD
Effective WaterRequirement in KLD
Office 18400 828.0 368.0 460.0Total 18400 828.0 368.0 460.0
Note: Treated water reuse assumed @ 20 l/head. Approximately 368
KLD water will besaved by adopting recycling of treated water in
the toilet flush.
The effective water consumption is reduced by 368.0 KLD and the
requirement will bein the order of 460.0 KLD. The water balance of
the project during occupation stage istabulated in table 2.7
Table 2.7 Water Balance during occupation stageInput KLD Output
KLDDomestic water fromHMWS&SB 460.0 HVAC Chillers 287.9Recycled
water 368.0 Treated waste water for Recycle 368.0
Water requirement for green beltduring non monsoon 6.5Losses
approx 20% 165.6
Total 828.0 Total 828.0
The water used in the order of 828.0 KLD would generate 662.4
KLD of wastewaterwhich has to be treated for reuse.
Sewage treatment plant based on Fluidized Aerobic Bio Reactor
(FAB) technologyPROCESS DESCRIPTION:The raw sewage will be
collected in a collection sump and pumped to mechanical barscreen
chamber for removal of large floating matter followed by grit
removal in GritChamber. The raw sewage will then be collected in an
equalization tank forhomogenization of hydraulic load. The tank
contents will be kept in suspension bymeans of course bubble
serration through pipe grid. The equalization tank, with airflow
indicator for continuous monitoring of air supply to the tank in
order to avoidseptic conditions, will be covered from top (RCC or
FRP) to avoid nuisance. Theequalized effluent will then be pumped
to two Fluidized Aerobic Bio Reactors (FAB) inseries where BOD/COD
reduction can be achieved by virtue of aerobic microbialactivities.
The oxygen required will be supplied through coarse air bubble
diffusers.The bio-solids formed in the biological process will be
separated in the down streamTube Settler. The clear supernatant
will gravitate to the chlorine contact tank wheresodium
hypochlorite will be dosed for disinfection of treated water prior
to disposal.
The biological sludge generated in the FAB and settled in the
tube settlers will becollected in a sludge sump and then pumped to
sludge drying bed for de watering. Thedried sludge will then be
disposed off suitably as manure. The schematics of theprocess are
shown. The two main components of the treatment system viz. The
FAB
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Devbhumi Realtors Pvt. Ltd. Environmental Impact Statement
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reactor and tube settler are described in the following
sections.
Fluidized Aerobic Bio Reactor (FAB)Conventional effluent
treatment plants are large sized, power intensive and require alot
of monitoring. Scarcity of open space and rising land a power costs
have forced theindustries to look out for space saving, compact and
efficient treatment options. Thishas led to the development
attached growth processes where the bio mass is retainedwithin the
aeration tank obviating the need for recycle. These plants are not
onlycompact but also user friendly. The endeavor to have a
continuously operating, no-clogging biofilm reactor with no need
for back washing, low head-loss and high specificbiofilm surface
area culminated in the most advanced technology of aerobic
biologicalfluidized bed treatment where the biofilm (biomass) grows
on small carrier elementsthat move along with the water in the
reactor. The movement is normally caused byaeration in the aerobic
version of the reactor.The reactor combines all the advantages and
best features of Trickling filters, Rotatingbiological contractors,
activated sludge process and submerged fixed film reactorswhile
eliminating the drawbacks of these systems. The plants are more
compact andmore energy efficient.
The Fluidized Aerobic Bio Reactor (FAB) consists of a tank in
any shape filled up withsmall carrier elements. The elements are
made up of special grade PVC orpolypropylene of controlled density
(shown in plate). For media of specific gravity 0.92-0.96 the
overall density could be expected to increase up to 9.5% when full
of biomasssuch that they can fluidize using an aeration device. A
biofilm develops on theelements, which move along the effluent in
the reactor. The movement within thereactor is generated by
providing aeration with the help of diffusers placed at thebottom
of the reactor. Then thin biofilm on the elements enables the
bacteria to actupon the biodegradable matter in the effluent and
reduce the BOD/COD content in thepresence of oxygen available from
the air that is used for fluidization.
Table 2.9 Characteristics of Waste waterParameter Quantity in
mg/l
PH 6 7Total Suspended Solids 400 600BOD 200 300COD 450 500
Design of the unitBasic dataFlow : 662.1 KLDCapacity : 800
m3
Peak factor : 3.5Peak flow Q peak : 2940 m3/dayInfluent BOD :
200 mg/litInfluent Suspended Solids : 200 mg/litInfluent COD : 350
mg/litEffluent BOD : 30 mg/lit
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Devbhumi Realtors Pvt. Ltd. Environmental Impact Statement
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Effluent COD : 200 mg/litEffluent Suspended Solids : 100
mg/lit
1. Bar Screen ChamberAverage flow : 0.0097 m3/secPeak factor :
3.5Peak flow : 0.035 m3/secVelocity at peak flow : 0.75
m/SecEffective area of screen RequiredAt average flow : 0.032
m2
At Peak flow : 0.046 m2
Provide Effective area of screen : 0.046 m2
Considering the bar of dia. 10 mm(w) and clear spacing of 20 mm
(b)Overall area required : 0.069 m2
Considering screen depth as : 0.5 mNumber of clear spacing :
2.3Number of bars : 3 Consider 5 Nos.Hence Provide 5 barsProvide a
screen of 0.5 m X 0.5 m at an inclination of sin 600. In a screen
channel ofone meter (1 m) length.
2. Grit Chamber :The flow from the bar screen chamber is let
into the Grit Chamber of minimum 2 hourscapacity. This tank is
provided to even out the flow variation, and to provide acontinuous
feed into the secondary biological treatment units.Peak flow Q :
0.0142 m3/secProviding a flow through velocity of 0.30 m/secCross
sectional area of Channel (0.0142/0.3) : 0.047 m2
Surface area of channel (0.0142/0.013) : 1.092 m2
Assuming depth d : 0.2 mWidth of channel (0.047/0.2) : 0.235 m
(say 0.2m)Length of channel (1.092/0.24) : 4.55 m (say 4.6
m)Provide two channels each of 0.2 m wide and 4.6 m long with depth
of waste water 0.2m.
3. Equalization tank:The flow from the bar screen chamber is let
into the equalization tank of minimum2hours capacity. This tank is
provided to even out the flow variation, and to provide acontinuous
feed into the secondary biological treatment units.Average flow :
35 m3/hrPeak factor : 3.5Peak flow : 122.5 m3/hrHydraulic retention
tank = 2 hrs at Peak flowHence required volume of the tank : 245
m3
Provide tank of : 245 m3 CapacityAssuming depth : 3 mArea : 81.6
m2
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Devbhumi Realtors Pvt. Ltd. Environmental Impact Statement
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Assuming length to width ratio (1:1) ; l=blength of the tank :
9.0 mwidth of the tank : 9.0 mAir required for agitation : 0.01 m3/
m2 minTotal air required : 147 m3/hrAir blower required : 150 m3/hr
@ 3.8 mwcEffluent transfer pump : 35 m3/hr @ 8 mwc
4. Fluidized Aerobic Bio Reactor (FAB):The polypropylene media
have been provided with a specific surface area of 350 520m2 /m3.
This allows micro-organisms to get attached and biomass
concentration canbe increased to four folds as compared to
Activated Sludge Process. This enables toconsider higher Organic
loading rates.
The micro-organisms attached to media are kept in a fluid state
thereby maintainingthe CSTR (continuous Stirrer tank reactor)
regime as well as two tanks are provided inseries making the plug
flow system. This will enhance the efficiencies and have themerits
of both CSTR and plug-flow regimes.Organic loading rate : 3.2 kg
BOD/ m3 dOrganic load : 168 kg/dayVolume of the tank : 52.5 m3
Assume the depth : 5 mNo. of tanks in series : 2Size of the tank
: 3.6 m dia. x 5.0 SWDSpecific gravity of media : 0.92 to
0.96Specific surface area of media : 350 520 m2 /m3
Media filling : 30 50 % of tank volumeOxygen required : 2 kg /
kg BODOxygen in air : 23%Specific gravity of air @ 30 deg. :
1.65Aeration : Coarse bubbleOxygen transfer efficiency : 12%Air
required : 217.7 m3/hrAir blower required : 250 m3/hr @ 6.5 m
wc
5.Tube settlerSurface loading rate : 48 m2 /m3 dSurface area
required : 17.5 m2
Tank size : 3.0 m x 6.0 m x 2.7 m SWD With55 deg. hopper
bottomTube Modules : 3.0m x 6.0 m x 0.6 m ht.Tube inclination : 60
deg.Settling area for 60 deg slope : 11 m2 /m3
Cross sectional area of tubes : 120 mm x 44 mm
HexagonalHydraulic radius : 1/61 cm (1.5 cm)Shape factor : 0.6 0.7
for media settleable solids
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Devbhumi Realtors Pvt. Ltd. Environmental Impact Statement
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6. Pre Filtration tankThe flow from the each individual settling
tank i.e., the supernatant liquid is let into therespective
Pre-Filtration Tank, which has a minimum 1.5 hours holding
capacity. Thistank is provided to hold the treated effluent and
give an even flow to the pressure sandfilter.Average flow : 35
m3/hrPeak factor : 2 m3/hrPeak flow : 70 m3/hrProvide min 1.5 hours
holding capacity.Hence required volume of the tank : 105 m3
7. Pressure Sand Filter:Vertical down flow type with graded/sand
bed under drain plate with polysterenestrains.Flow : 800 m3/dayRate
of filtration assumed as : 10 m3/m2/hrRequirement of treated water
for usage in 20 hrs : 42 m3/hrDia. of filter of 1 nos. : 2350
mmProvide pressure sand filter of 2350 mm dia. and 2500 mm HOS with
sand as medialayer, under drain pipe, laterals face piping etc for
each stream.
8. Activated Carbon Filter:Vertical down flow type with
graded/sand bed under drain plate with polysterenestrains.Flow :
800 m3/dayRate of filtration assumed as : 10 m3/m2/hrRequirement of
treated water for usage in 20 hrs : 42 m3/hrDia of filter of 1 nos.
: 2350 mmProvide Activated Carbon filter of 2300 mm dia with
granular Activated carbon asmedia and 2500 mm HOS with sand as
media layer, under drain pipe, laterals facepiping etc for each
stream.
9.Ultraviolet Disinfection:UV applied to low turbidity water is
a highly effective means of disinfection. UV is notharmful to
aquatic organisms in the receiving water. UV light kills viruses,
Vegetative-and spore-forming bacteria, algae and yeasts. No
chemicals are added to thewastewater to change the pH,
conductivity, odor or taste to create possible toxiccompounds. UV
treatment has a few moving parts to adjust or wear out.
10.Final Treated Water Holding TankIt is always preferred to
provide one final holding tank of minimum one day holdingcapacity,
so that the treated effluents can be stored and used back for
gardening orother tertiary purposes.Capacity: 800 m3
11. Sludge Filter Press:The biomass in the aeration tank
stabilizes BOD in wastewater by consuming the
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Devbhumi Realtors Pvt. Ltd. Environmental Impact Statement
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organic matter in the wastewater. The metabolic activity results
in growth of thebiomass population in the Fluidized Aerobic Bio
Reactor (FAB). Sludge holding tank hasbeen provided with filter
press for dewatering sludge. The filtrate drains off throughthe
media, which is again let into equalization tank.The dewatered
sludge is collected in trays, which can be used as manure in the
garden.No. of plates : 24Size of plates : 600 mm X 600 mmPlate moc
(material of construction) : PP (poly propline)Type of operation :
HydraulicPower pack capacity : 2 HP
The biomass in the aeration tank stabilizes BOD in wastewater by
consuming theorganic matter in the wastewater. The metabolic
activity results in growth of thebiomass population in the
Fluidized Aerobic Bio Reactor (FAB). Sludge holding tank hasbeen
provided with filter press for dewatering sludge. The filtrate
drains off throughthe media, which is again let into equalization
tank.
The dewatered sludge is collected in trays, which can be used as
manure in the garden.
Characteristics of Treated Waste waterParameter Quantity in
mg/l
PH 7 8Total Suspended Solids 100BOD 30COD 100
Disposal of Treated Waste Water: The wastewater shall be treated
and reused forflushing the toilets, on land irrigation and HVAC
make up water requirement. Hence allthe recycled water is utilized
completely and is considered as a zero discharge.
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Devbhumi Realtors Pvt. Ltd. Environmental Impact Statement
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Fig 2.5 Sewage Treatment Flow Diagram
SEW
AG
E TR
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PLA
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FLU
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ERO
BIC
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REA
CTO
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EQT
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BarS
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n/ G
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Slud
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SLU
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TAN
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ERTA
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18
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Devbhumi Realtors Pvt. Ltd. Environmental Impact Statement
Team Labs and Consultants2 - 18
2.2.1.3 Solid Waste
Municipal Solid Waste CompositionIn India the biodegradable
portion dominates the bulk of Municipal Solid Waste.Generally the
biodegradable portion is mainly due to food and yard waste. The
belowtable presents Composition of Municipal Solid Waste.
Table 2.9 Composition of Municipal Solid WasteType Composition
(%) Solid waste in kgPaper 8 442Plastics 9 497Metals 1 55Glass 1
55others 4 221Biodegradable 48 2650Inerts 25 1380Rags 4 221Total
100 5520
Source: NSWAI - (National Solid Waste Association of India)
Design StageThe total number of people anticipated to stay in
the project is in the range of 8000-8500. The anticipated solid
waste/garbage is in the range of 300 g/head, and the totalgarbage
will be in the order of 5520 kg/day. The solid waste from the block
is collectedthrough dumb waiter system and then collected at the
block collection point and finallysent to the main collection
point. The organic waste is treated in the waste converterand the
inorganic waste is sent to the Municipal Management facility. The
residents ofthe surrounding layouts are sending their solid waste
through the SerilingampallyMunicipality appointed NGO for
collection, which is nearer to the site. Governmentidentified the
Jawaharnagar Garbage disposal center for both Kukatpally
andSerilingampally areas. The biodegradable garbage after
segregation is composted andthe remaining waste is sent to the
landfill in Jawaharnagar. The landfill site is yet toobtain
clearance under Municipal solid waste rules of MoEF, GoI. The table
2.10presents the anticipated garbage quantity after occupation.
Table 2.10 Solid Waste GenerationLand Use No. of Persons Total
Solid waste in Kgs/day
Office 18400 5520Total 18400 5520
2.2.2 Construction StageThe sequence of construction operations
and the approximate time requirement ispresented in the following
table 2.11. The time schedule of the entire project isapproximately
18 months.
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Devbhumi Realtors Pvt. Ltd. Environmental Impact Statement
Team Labs and Consultants2 - 19
Table 2.11 Construction SequenceS.No Description of work
1 Clearing and Grubbing2 Leveling by way of cut and fill3
Foundation Excavation.4 Foundation PCC & Concrete & Plinth
Beam.5 Column lifting up to GF Roof.6 1st floor slab reinforcement
& shuttering & Concreting.7 Stair case slab8 1st floor
column lifting up to 1st floor roof.9 1st floor roof shuttering,
reinforcement & concreting.
10 Deshuttering of GF Roof & cleaning.11 Deshuttering of 1st
Roof & cleaning.12 Brick work in GF floor.13 Brick work in 1st
floor.14 Staircase up to terrace.15 Staircase headroom slab.
16Plumbing works (concealed works).Electrical conduit junction
boxes & boardfixing.Plastering works.
a. Internal (GF & FF).
b. External (GF & FF).
17 Fixing of door & window frames.18 Plinth filling &
floor PCC.19 Floor Tiling Works, bathroom, kitchen & platform
works.20 Staircase stone works.21 Terrace waterproofing works.22
Parapet wall in terrace & miscellaneous works.23 Fixing of door
& window shutters.24 Fixing of sanitary fittings.25 Electrical
wiring & fixtures.26 Painting works.27 External development
& compound wall.
The clearing and grubbing activity involves clearing of few
trees and shrubs mainly asthe greenery is not disturbed in the
layout plan. The cut and fill operation for the entirearea is
presented in table 2.12. There is excess cut material which would
be used forconstruction of roads and the purpose of aggregate for
the construction purpose.
Table 2.12 Earth Work Quantities
S No Area Qty. of fill(m3)Qty of cut
(m3)Surplus fill
(m3)Surplus cut
(m3)
1 Site 59966 99944 --- 39977
The cut material contains mainly granite stones, which is
suitable for masonry works.The excess cut material in the order of
39977 m3 will be used for above purpose.
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Devbhumi Realtors Pvt. Ltd. Environmental Impact Statement
Team Labs and Consultants2 - 20
The construction of this magnitude would require huge quantities
of constructionmaterials. The material requirement for the project
is presented in table 2.13.
Table 2.13 Material Consumption
Floor TotalBUA (m2)
ReadyMix
Concrete(m3)
Cement(bags)
Sand(m3)
Aggregate (m3)
Water(m3)
Brick(Nos) x1000
Reinforcement
steel (MT)
Total BUA 383239 157128 356412 149463 16479 92744 44456
8814Total 383239 157128 356412 149463 16479 92744 44456 8814
Thus aggregate requirement will be met from within the plant
site. The lead distancefor various construction materials is
presented in table 2.14.
Table 2.14 Lead Distance for Construction Materials
S.No Material Source Lead Distance(Km)
1Sand ROBOSAND and or Krishna
or Godavari river bed areaspermitted by Govt.
160 250
2 Aggregate With in the site 0 53 Cement Manufacturing units 150
2004 Reinforcement Steel SAIL/TATA god owns 5-10
5 Bricks Local suppliers/Manufacturers 50
6 Plumbing Material Local suppliers 2 97 Electrical Material
Local Suppliers 2 88 Sanitary Material Local suppliers 2 8
9 Flooring andPavement Tiles Manufacturers 50 150
10 Paints Local Manufacturers 10 3011 Ready Mix Concrete Local
Batch Plants 3 7
2.2.2.1 Water RequirementThe water required for this project is
in the order of 92500 m3 for the entire projectimplementation
period. The peak demand for water may be 220 m3/day, howevertypical
daily consumption will be in the order of 110 m3/day. The required
water will bedrawn from ground water sources. The project
authorities explored the possibility ofusing treated wastewater to
meet partial requirement of water and could not identify areliable
source. The water supply and plumbing will be optimized and low
waterconsuming faucets and flush tanks will be used to conserve
water.
2.2.2.2 Construction DebrisThe construction debris consists of
various types of materials. The construction debriswill be in both
hazardous and non-hazardous categories. The hazardous debris
consistsof empty containers of adhesives, thinners, paints, and
petroleum products. Theseempty containers will be sold to
authorized recyclers. The non hazardous wastes
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Devbhumi Realtors Pvt. Ltd. Environmental Impact Statement
Team Labs and Consultants2 - 21
contain recyclable debris like iron and other metal, glass,
plastics, cartons of paper,wood etc. These wastes will be sent for
reuse/recycle. The waste percentage will be inthe order of 2%.
Construction debris containing bricks, demolished RCC will be used
forland filling in the place of sub grade.
2.2.2.3 PaintsAll the paints used in the premises will be
ensured to have an albedo of at least 0.4 toincrease the
reflectivity and reduce the heat dissipation and heat island
effects.
2.2.2.4 Work Force:The labor/work force requirement is
approximately 8000 man-days of various skilledand unskilled
employees. Sufficient labor force and skilled employees are
available, asHyderabad is a favorite destination of skilled
employees and migrating people from therural areas. The peak labor
force requirement will be in the order of 1000 people. Thelabor
force will be provided with temporary toilet facilities connected
to a septic tankfollowed by sewer lines. The water requirement for
the labor force will beapproximately 500 lt/day.
2.2.2.5 Material preparation and transportMost of the
construction material except aggregate will be drawn from outside.
Thematerial will be transported by trucks and the approximate
number of truck trips are600. The material transport within the
site will be facilitated by 5 no. of trippers.
2.2.2.6 Batching PlantThe required concrete will be prepared in
a batching plant to be located temporarily inthe site so as to
maintain the quality and reduce the lead distance. The capacity of
thebatching plant will be 30 m3 to 50 m3/hr. The raw mix design
(Cement: sand: coarseaggregates: water: admixture) is stored in
electronic panel board and the quantities areweighed automatically
as per the design mix. Aggregates in the sizes of 10 mm, 20 mmis
stacked in separate bins and these materials are loaded into the
hopper by scrapperand load cells. Cement is provided to the mix
through silos (40 MT to 20 MT capacity)with the help of screw
conveyor. Measured quantity of water and admixture is fed
intohopper though load cells. In the hopper coarse aggregates, fine
aggregates, cement,water and admixture gets mixed in required
quantities by rotary motion of the mixerand after proper mixing it
is unloaded into transit mixers at the rate of 0.5 m3/minute.The
water consumption for this process is approximately 160 lts/m3 of
concrete. Theentire operation is closed and there is no scope of
fugitive dust as the operation is wetin nature.
2.2.2.7 Stone CrusherThe required aggregate will be drawn from
with in the site from a temporary stonecrusher. The capacity of the
stone crusher is 150 tons/hour. The stone crusher will usethe rocky
boulders removed during the cut operations and used for the
production ofaggregates of various sizes. The main raw material is
boulders obtained from within thesite during clearing operations of
the land and conveyed by tippers & dumpers to theplant site.
All the crushing units are mobile and electrically operated. The
boulder ischarged into the hopper with help of dumper. The boulders
are crushed and screened
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Devbhumi Realtors Pvt. Ltd. Environmental Impact Statement
Team Labs and Consultants2 - 22
to required size with help of screens and carried by belt
conveyors to the storage yard.The dust and the aggregate of less
than 12.5 mm size will be used for road constructionand as sub base
for flooring purpose instead of sand. All the silos and the
conveyor beltswill be covered and the transfer points will be
provided with water sprinkling. Thewater requirement for this plant
is approximately 5 cum/day.
2.2.3 OCCUPATION PHASEA number of facilities will be provided by
M/s Devbhumi Realtors Pvt. Ltd., for theoccupants and the
facilities are shown in table 2.15
Table 2.15 Amenities ProposedAmenity Nos. or Description
Sewage Treatment Plant 1Garbage Collection Bin 1DG Sets 10 Nos.
X 2000kVAGreen area 6007.5 m2
The company shall operate the amenities like sewage treatment
plant, DG sets. Themajor requirement of resource is for electricity
and water. The electricity will be drawnfrom TRANSCO. Transformers
will be provided to reduce voltage fluctuation and toprovide
quality energy. The power requirement during operation phase is
presented intable 2.16.
Table 2.16 Energy Consumption Statement
S.No DescriptionTotal
area inm2
Powerallocated in
watts per m2
Total Powerrequired in
(KW)
1 Office &Common area
230334 60.00 13820.03
Total 13820.03
Maximum demand in kw at 0.6 diversity factor 8292.0Consumption
of power for 12 hours per day 99504.2Maximum demand in kw at 0.1
diversity factor 1382.0Consumption of power for 12 hours per day
16584.0Total consumption of power per day 116088.2 KWTotal
consumption of power per year 423.7 Lakh Units
Table 2.17 Energy Saving by using copper wound transformers for
Comm.Power loss using CU. wound transformer 1.20%
Savings in power loss using CU wound transformer 3.2 Lakh
Units
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Devbhumi Realtors Pvt. Ltd. Environmental Impact Statement
Team Labs and Consultants2 - 23
Table 2.18 Energy Saving by using HF BallastPower loss using
conventional ballast 25%Power loss using HF ballast 14%Savings in
power loss using HF ballast 11%
S.No DescriptionTotal
area inm2
Powerallocatedin wattsper m2
Total Powerrequired in
(KW)
1 Parking 152905 3.00 458.722 Common Area 69100 5.00 345.50
Total 804.22
Maximum demand in kw at 0.8 diversity factor 643.4Consumption of
power for 12 hours per day 7720.5Maximum demand in kw at 0.2
diversity factor 160.8Consumption of power for 12 hours per day
1930.1Total consumption of power per day 9650.6 KWTotal consumption
of power per year 35.2 Lakh UnitsSavings in power loss using HF
ballast 3.9 Lakh Units
Table 2.19 Electrical Power savings using CFL/T5 for
lightingSavings in power Using CFL/T5 as against Fluorescent Lamps
30%
S.No Description Total areain m2
Powerallocated in
watts per m2
Total Powerrequired in
(KW)1 Parking 163718 3.00 491.152 Common Area 71496 5.00
357.48
Total 848.64
Maximum demand in kw at 0.8 diversity factor 678.9Consumption of
power for 12 hours per day 8146.9Maximum demand in kw at 0.2
diversity factor 169.7Consumption of power for 12 hours per day
2036.7Total consumption of power per day 10183.6 KWTotal
consumption of power per year 37.2 Lakh UnitsSavings in power using
CFL 11.2 Lakh Units
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Devbhumi Realtors Pvt. Ltd. Environmental Impact Statement
Team Labs and Consultants2 - 24
Table 2.20 Electrical Power savings using Solar Power for
External lighting
S.No Description Total areain m2
Powerallocated in
watts per m2
Total Powerrequired in
(KW)1 External Lighting 30.00
Total 30.00
Maximum demand in kw at 1.0 diversity factor 30.0Consumption of
power for 6 hours per day 180.0Maximum demand in kw at 0.5
diversity factor 15.0Consumption of power for 6 hours per day
90.0Total consumption of power per day 270.0 KWTotal consumption of
power per year 0.99 Lakh UnitsSavings in power using Solar Power
0.99 Lakh Units
Table 2.21 Electrical Power savings using water Cooled
ChillersSavings in power by using Water Cooled Chillers as against
Air cooledChiller 40%
S.No DescriptionTotal
area inm2
Powerallocated in
watts per m2
Total Powerrequired in
(KW)1 Commercial Office 230334 25.00 5758.34
Total 5758.34
Maximum demand in kw at 0.6 diversity factor 3455.0Consumption
of power for 12 hours per day 41460.1Maximum demand in kw at 0.1
diversity factor 575.8Consumption of power for 12 hours per day
6910.0Total consumption of power per day 48370.1 KWTotal
consumption of power per year 176.6 Lakh UnitsSavings in power
using water Cooled Chillers and heatrecovery wheel 70.62 Lakh
Units
Table 2.22 Total Saving
S.No Description Savings in lakhkwh unitsSavings in
percentage1 With Cu wound Transformer 5.1 1.22 with HF Ballast
3.9 0.013 With CFL 10.6 2.5
4With WaterCooled Chillers 70.6 16.7
5 With Solar Power for External lighting 1.0 0.2Total Saving
91.1 21.5Total Consumption 423.7
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Devbhumi Realtors Pvt. Ltd. Environmental Impact Statement
Team Labs and Consultants2 - 25
2.2.3.1 Domestic WaterThe domestic water will be drawn from
HMWSSB and during non-availability Groundwater will be drawn and
used to augment the supplies. The wastewater will be treatedand
reused for gardening and flush tanks. Dual plumbing system is
adopted to reuse thetreated wastewater for flushing. Dual plumbing
system: Separate tank is provided tostore the treated water, the
tank is at least 1 foot below the level of other tanks and
adistance of minimum 2 feet from the other water pipelines.
Separate pipe system isprovided to pump the treated water for
flushing. All the lines providing treated waterwill be colored
blue. The excess treated water will be let out into the storm
waterdrains.
2.2.3.2 Solid WasteThe solid wastes anticipated during
occupation stage include garbage, sludge from STP,hazardous waste
of used oils, and batteries from generators. The quantity of wastes
ispresented in table 2.23.
Table 2.23 Solid Waste Generated during Occupation PhaseS.No
Type of Waste Quantity Collection/storage Disposal
1 Garbage 5520kg/day
Segregation at source into bio-degradable, non bio-degradable
and DomesticHazardous wastes. Disposal ofrecyclable waste
toAuthorized Waste Pickers /Authorized Recyclers. Balancesegregated
waste given toAuthorized Agency of LocalBody.
Municipalsolid wastedisposal
2SewageTreatmentPlant Sludge
40kg/day Stored in HDPE bags.
Used asmanure andor given tofarmers.
3 Used Batteries 30 nos. year
Sent toAuthorizedrecyclers orreturned toseller
4 Used Lubricant 400 l/year Stored in HDPE CarboySold
toauthorizedrecyclers
5 Transformer Oil 500 l/year Stored in HDPE Drum
Sold toTRANSCOauthorizedcontractors
6 e-waste Stored in go downs e-parisara
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M/s. Devbhumi Realtors Pvt. Ltd.,SURVEY NO. 83/1, RAIDURG
PANMAKHTA,
SERILINGAMAPALLY, RANGA REDDY DISTRICT
Studies and Documentation by:M/s Team Labs and ConsultantsB-115
to 117 & 509, Annapurna Block,Aditya Enclave,
Ameerpet,Hyderabad- 500 038Phone: 91-040-23748555/616Fax :
91-040-23748666e-mail: [email protected]
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