Case study rane (madras) ltd. - 100 kld stp

Results Of New 100 KLD - MAR (Multi stage Aerobic Bio Reactor) Type STP at Rane (Madras) Ltd. – Velachery, Ch – 42.

Chola Aqua Technologies, No:34, St. Mary’s Road, Mandaveli, Chennai – 600 028. Mbl. 9444303293

1. Small foot print Area

Old STP - 5000 Sq.ft

New STP - 450 Sq.ft

5000

5000

SMALL FOOT PRINT AREA89% Space

saving


450

0

1000

2000

3000

4000

Are

a i

n S

q.f

t

Old STP New STP

2 .Lower Operating Power Requirement

Old STP New STP

Power per year 2.82Lacs unit 0.784Lacs unit

Cost per year Rs :9.87Lacs Rs :2.74Lacs

Power Per Year(Lacs)Cost / Year(Lacs) 72% Energy


2.82

0.784

0

0.5

1

1.5

2

2.5

3

Un

it / Y

ear(

In L

acs)

Old STP New STP

Power Per Year(Lacs)

9.87

2.74

0

5

10

Co

st

/ Y

ea

r(In

L

ac

s)

Old STP New STP

Cost / Year(Lacs) 72% Energy saving

3. Satisfied the Authorities of TNPCB

Parameter Required

by TNPCB

Rane Sewage Old STP

New STP

PH 6.9 - 8.5 6.9 6.9 7.2

BOD (mg/L) < 30 410 30 Nil

COD (mg/L) < 100 1650 300 5


COD (mg/L) < 100 1650 300 5

TSS (mg/L) < 30 420 50 3

Oil & Grease (mg/L) < 20 58 25 3

Colour (Hazen Units)

< 25

Clear Black/Grey Not clear

< 5

Clear

Odour Nil Bad Odour Bad Odour Nil

Turbitity (NTU) < 10 80 50 < 5

100

5060708090

100

Satisfied the Authorities of TNPCB

Amazing Result

3. Satisfied the Authorities of TNPCB


30

15

50

3

15

3

0102030405060

mg

/L

BOD(mg/L) COD(mg/L) TSS(mg/L) Oil &

Grease(mg/L)

ParametersOld STP New STP

4. Simplicity in Operation and Maintenance

� There is no Moving parts in the New STP. So easy to

operate and maintain under widely fluctuating conditions

� Easy to install and Dismantle

� Easy to move any where

� Enable easy operation – Even by unskilled operator


� Enable easy operation – Even by unskilled operator

5 . No Disposal Problem

� The NEW STP system produces very low sludge

Old STP : 16.42 Ton / Year

New STP : 0.182 Ton / Year

No Disposal Problem


16.42

0.182

0

5

10

15

20

No

. O

f T

on

s

Old STP New STP

Very Good Digests

6 . Capex Savings

Conventional Plant - Old STP - 20%

MAR (Multistage Aerobic Bio Reactor) – New STP - 80%

80%

80%

Capex Savings


20%

0%

10%

20%

30%

40%

50%

60%

70%

80%

%

Conventional

STP

MAR type STP

7. Why New MAR type STP?

Activated Sludge Process Multi Stage aerobic Bio Reactor

Large Size Reactor size is small & compact

Suspended growth of bacteria process Attached growth of bacteria process

Close monitoring required Monitoring not required


Close monitoring required Monitoring not required

High Maintenance & Skilled labour required

Low Maintenance & Simple Operation

Efficiency is Maximum 65% only, Further treatment required

Treatment efficiency is 99%

Widely popular & Old techniques Most advanced technology

Odour & Colour Removal not Guaranteed

No Odour & Clear treated water

7. Why New MAR type STP?

65%

90%

99% 99% 100%

70%

80%

90%

100%

Comparison Between Conventional & MAR type

STPs


50% 50%

30%

20%

30%

40%

50%

60%

70%

Efficiency Odour

Removal

Treated

water clearity

Maintenance

Cost

ParametersConventional STP Mar Type STP

8. Features of NEW STP

1. Odorless Operation with self Regulating system.

2. Non – Clogging design, better oxygen transfer efficiency.

3. Simple to operate with low maintenance.

4. Attached growth process – No sludge recycle and no monitoring.


4. Attached growth process – No sludge recycle and no monitoring.

5. High Bio –Film surface area; compact plant with high loading rates.

6. Removes E-Coli (Coli form).

8. Money Saving ALL THOUGH

In terms of initial investment, operating &

maintenance cost, energy & Space Saving.


Case study rane (madras) ltd. - 100 kld stp

Technology