etp
TRANSCRIPT
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Coming Up.. Introduction
Where u get Effluent
Treatments
Explanation
After Treatment
Questions
Citations
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• ETP - Pollution• Necessity• Uses
Introduction
Umm… what is ETP??
Facts
•Textile industry 1/3rd of total export
•Chemical Processing-70% pollution
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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
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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
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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
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Arvind Mills Ltd. Santej, Plant Layout(Large scale)
Primary TreatmentSecondary Treatment Tertiary Treatment
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PRIMARY TREATMENT
(ANALYSIS) • Screening• Sedimentation•Equalization•Neutralization•Coagulation
Processes
Hmm.. Quite simple!!
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SECONDARY PROCESS(IN DEPTH)
•Activated sludge process•Oxidation ponds • Trickling
filtration
Processes
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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.
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Trickling filtration
•Biofilters or Percolating filters
•SS : 80 - 90%
•BOD: 40-85%
•Mostly used for cotton finishing wastes
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Oxidation pond (waste stabilization ponds)
•Bacteria/ flagellated protozoa
•Algae
•Photosynthesis
•Economical
•Suits tropical climates
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TERTIARY PROCESS • Activated Carbon Adsorption• Chemical
Coagulation & precipitation•Multimedia
filtration• Reverse
Osmosis
Well.. Is the water clean now?? .. Still not fully!! TDS
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Activated Carbon Adsorption
Removes: •Mineral oils•Yeasts•Odor etc..
•Polar – Badly removed
•Nonpolar - easily
It is used to filter Vodka & Whiskey!
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Multimedia filtration•Mixed media filtration
•Conventional gravity type/pressure filters
u know? It’s the same thing in our Acquaguards
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Reverse Osmosis
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Any Questions
Hmm! ETP is aninteresting topic
-Waste water-Pollution-Treatment
-Primary-Secondary-Tertiary
-Reuse/ Dumped
Summary
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INDUSTRY VISIT PICTURES
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INLET OF EFFLUENTS
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INLET OF EFFLUENTS
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EFFLUENT STORAGE
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EFFLUENT STORAGE
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EFFLUENT STORAGE
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SCREENING
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ADDITION OF COAGULANTS
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EFFLUENT PRECIPITATION TANK
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REMOVAL OF STARCH
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VIEW
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REMOVAL OF SLUDGE
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REMOVAL OF SLUDGE
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CHLORINE CYLINDER
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PRE-OSMOSIS TREATMENT
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OSMOSIS TREATMENT
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PRESSURE TRACKING METER
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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
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ThankYou!!!