ETP
Transcript of 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!!!