ETP

Coming Up.. Introduction

Where u get Effluent

Treatments

Explanation

After Treatment

Questions

Citations

• ETP - Pollution• Necessity• Uses

Introduction

Umm… what is ETP??

Facts

•Textile industry 1/3rd of total export

•Chemical Processing-70% pollution

Accumulation of Effluents

• Sizing & Desizing• Bleaching• Dyeing & Printing• Scouring &

Mercerizing

Facts

• Dyeing – most wastes• Effluents- 500 l- 8200 l per 1000kg of yarn/fabric•Internally used - 60%

Whoov! One fabric, so many processes

Effluent Stages

Parameter Gov’t Standards Before After

ph 6.5 to 8.5 7-11 7.60

BOD 30 mg/lit 300 18

COD 100 mg/lit 600 90

Suspended solids 100 mg/lit 90 70

TDS Approx. 2100 mg/lit 3000 3000

Oil & Grease 10 mg/lit Not Defined Nil

Sulphates Nil 1-2mg/lit Nil

Chlorides 600 mg/lit 1250 500

Temperature 40°C 50°C approx. Not Defined

Conductivity Zero 4000 4700

Color(units) 100 units 2000

Turibidity(fau) 15 180 10

Treatments (In Brief)

• Primary• Secondary• Tertiary

Facts

COD & BOD is so confusing!!

• Small/medium scale industry – no Tertiary

• All process - continuous working

• Cost- 40 Rs/m³

Arvind Mills Ltd. Santej, Plant Layout(Large scale)

Primary TreatmentSecondary Treatment Tertiary Treatment

PRIMARY TREATMENT

(ANALYSIS) • Screening• Sedimentation•Equalization•Neutralization•Coagulation

Processes

Hmm.. Quite simple!!

SECONDARY PROCESS(IN DEPTH)

•Activated sludge process•Oxidation ponds • Trickling

filtration

Processes

Activated sludge process

• An aerobic treatment• Zoogleal masses• BOD-95%.• Color-80%• All times- 0.5mg/l oxygen

Aerated basin, Vertical Spindle

Facts

Removes phosphate, ammonia, nitrogen, etc.

Trickling filtration

•Biofilters or Percolating filters

•SS : 80 - 90%

•BOD: 40-85%

•Mostly used for cotton finishing wastes

Oxidation pond (waste stabilization ponds)

•Bacteria/ flagellated protozoa

•Algae

•Photosynthesis

•Economical

•Suits tropical climates

TERTIARY PROCESS • Activated Carbon Adsorption• Chemical

Coagulation & precipitation•Multimedia

filtration• Reverse

Osmosis

Well.. Is the water clean now?? .. Still not fully!! TDS

Activated Carbon Adsorption

Removes: •Mineral oils•Yeasts•Odor etc..

•Polar – Badly removed

•Nonpolar - easily

It is used to filter Vodka & Whiskey!

Multimedia filtration•Mixed media filtration

•Conventional gravity type/pressure filters

u know? It’s the same thing in our Acquaguards

Reverse Osmosis

Any Questions

Hmm! ETP is aninteresting topic

-Waste water-Pollution-Treatment

-Primary-Secondary-Tertiary

-Reuse/ Dumped

Summary

INDUSTRY VISIT PICTURES

INLET OF EFFLUENTS

INLET OF EFFLUENTS

EFFLUENT STORAGE

EFFLUENT STORAGE

EFFLUENT STORAGE

SCREENING

ADDITION OF COAGULANTS

EFFLUENT PRECIPITATION TANK

REMOVAL OF STARCH

VIEW

REMOVAL OF SLUDGE

REMOVAL OF SLUDGE

CHLORINE CYLINDER

PRE-OSMOSIS TREATMENT

OSMOSIS TREATMENT

PRESSURE TRACKING METER

Citations

Websites • www.lenntech.com• www.nanoscienceworks.org• www.fibre2fashion.com

Textbooks • Manivasakan. N, “Treatment of

Textile Processing Effluents”, Sakthi publications, Coimbatore, 1995.

• Takashi Asano, “ Wastewater Reclamation and Reuse”, CRC Press,1998

Mr. Nilesh MulyaMr.Shubhanish Malhotra.. etc

ThankYou!!!