Prepared By : Mazadul Hasan sheshir
Batch (session 2009-2013)
Department : Wet Processing Technology
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Department Of Textile Engineering
I/A 251,252 Tejgaon Dhaka Bangladesh
Prepared By :
Effluent is the stream of excess chemical liquor which is extracted from an
industry after using in original operation.
The excess dye liquor which is extracted from textile industry after dyeing
from different processes are treated with various chemicals to remove or
neutralize the toxic materials before discharging to environment (e,g-
ground water) . This is called effluent treatment.
Presentation on Biochemical ETP 6
WHAT IS ETP?WHAT IS ETP?
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INFLUENT ETP EFFLUENT
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TREATMENT OF WASTE WATER
BY CHEMICAL & BACTERIA.
TREATMENT CAPACITY: 120
STORAGE CAPACITY: 6000 m3
FLOW CHART OF ETP OF ECHOTEX LTDFLOW CHART OF ETP OF ECHOTEX LTD..
Presentation on Biochemical ETP
PRIMARY INCLINED PLATE
(DRUM SCREENER IS USED IN THIS ETP)
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Screening is the filtration
process for the separation of
coarse particles from influent.
Stainless steel net is used for
Hard plastic brushes are used to
clean the net, which are driven
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SCHEMTIC DIAGRAM OF DRUM SCREENER:SCHEMTIC DIAGRAM OF DRUM SCREENER:
EQUALIZATION IS THE PROCESS TO
MAKE THE WASTE WATER-
Dine By air passing.
EQUALIZATION TANK IS ALSO
CALLED HOMOGENOUS TANK.
RETENTION TIME 8 HOURS.
THIS TANK IS MADE OF RCC.
CAPACITY: 2750 m3
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AIR FOR DIFFUSION
Ozone contact tank is used
Add more DO
Kill Anaerobic Bacteria
O3 is create by Ozonator
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This tank is made of RCC
Capacity : 31.08 m3
FLOCCULATION TANK IS USE FOR____FLOCCULATION TANK IS USE FOR____
(lime, ferrous & polymer)
Break down Color Bond
This Tank Is Made Of RCC
Capacity: 31.08 m3
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According to IUPAC “flocculation is a process of contact and adhesion
whereby the particles of a dispersion from larger size clusters”
Flocculation process in ETP means increasing the particle size.
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SOLOD AND LIQUID SEPERATION PART.
CAPACITY : 70 m3
Primary secondary and tertiary settler ___rack of inclined
metal plate, which cause flocculated material to precipitated
from waste water.
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THIS TANK IS MADE OF RCC
CAPACITY: 842.4 m3
Sequencing batch reactors are industrial
processing tanks for the treatment of
wastewater . SBR reactors treat waste water
from industrial area, and sewage or output from
anaerobic digesters or mechanical biochemical and
biological treatment facilities in batches,
Oxygen is bubble through the waste water to
reduce Biochemical oxygen demand (BOD) ,
chemical oxygen demand (COD) to make
suitable for use in land and aquatic life.
Here used bacteria should be aerobic,
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CAPACITY : 375.76 m3
Generally use to reduce temperature and increase DO.
To storage the wastewater for next treatment.
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THIS TANK IS MADE OF RCC
CAPACITY : 245 m3
Aerobic digestion is an open system that utilizes oxygen
and biologically treats waste with naturally occurring
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SIZE : 5 m3
Sludge conditioning is a process whereby sludge solids are treated with chemicals
or various other means to prepare the sludge for dewatering processes.
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SCHEMTIC DIAGRAM OF FUNCTION OF SLUDGESCHEMTIC DIAGRAM OF FUNCTION OF SLUDGE
CONDITIONING TANK:CONDITIONING TANK:
SLUDGE TO FILTER
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At first we want to give thanks to our honorable course teacher
Assistant professor Dr. Arun Kanti Guha, for assigning us for
this important assignment and also for his immense help in during
making this assignment paper. We also want to pay thanks to our
senior brother Mazedul Hasan Shishir (13th
batch) for his help and
At last we want to pay thanks to our group members for help and co-
operation with hard working mentality so that we could complete the
task with success.
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1. Visit of ECHOTEX by 13th
batch with Arun Kanti Guha
3. Class lectures of Environment pollution and its control.
5. Div. of Environmental Biotechnology, School of Bio
Sciences and Technology, VIT University, Vellore-
6. Sixth International Water Technology Conference, IWTC
2001, Alexandria, Egypt
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