ETP- Effluent Treatment Plant

DEPARTMENT OF TEXTILE ENGINERING

ETP : Effluent Treatment Plant For Textile

BIOLOGICAL ETP

COURSE TITLE“ENVIRONMENTAL POLLUTION AND ITS

CONTROL”

PRESENTATION ON“ETP OF DELTA KNIT COMPOSITE LTD.”

PREPARED BY

Name ID

Mazadul Hasan Sheshir

2010000400008

PRESENTER

Mazadul Hasan Sheshir

2010000400008

WHAT IS ETP?

INFLUENT ETPTREATMENT

EFFLUENT

SLUDGE

ETP OR EFFLUENT TREATMENT PLANT IS USED TO TREAT THE INDUSTRIAL WASTE WATER.

INFLUENT: UNTREATED INDUSTRIAL WASTE WATER.

EFFLUENT: TREATED INDUSTRIAL WASTE WATER.

SLUDGE: SOLID PART SEPARATED FROM WASTE WATER BY ETP.

ABOUT THE ETP OF DELTA KNIT COMPOSITE LTD.

BIOLOGICAL ETP: TREATMENT OF WASTE WATER BY BACTERIA.

TREATMENT CAPACITY: 120 m3/hr

STORAGE CAPACITY: 6000 m3

FLOW CHART OF ETP OF DELTA KNIT COMPOSIT LTD.INFLUENT

SCREENING

EQUALIZATION

PH CORRECTION

DISPERSE UNIT

RECYCLETANK

SEDIMENTATION PACK

SEDIMENTATION TANK

SLUDGE THICKENING UNIT

AERATION

SLUDGESLUDGE DISCHARGE

FISH POND EFFLUENT

EFFLUENT DISCHARGE

SCREENING

DRUM SCREENER

SCREENING IS THE FILTRATION PROCESS FOR THE SEPARATION OF COARSE PARTICLES FROM INFLUENT.

STAINLESS STEEL NET IS USED FOR SCREENING.

HARD PLASTIC BRUSHES ARE USED TO CLEAN THE NET, WHICH ARE DRIVEN MECHANICALLY.

(DRUM SCREENER IS USED IN THIS ETP)

SCHEMTIC DIAGRAM OF DRUM SCREENER

EQUALIZATION

EQUALIZATION IS THE PROCESS TO MAKE THE WASTE WATER- -HOMOGENOUS & -COOL

EQUALIZATION TANK IS ALSO CALLED HOMOGENOUS TANK.

RETENTION TIME 8 HOURSE

THIS TANKA IS MADE OF RCC.

SCHEMTIC DIAGRAM OF EQUALIZATION TANK

EQUALIZATION TANK

INFLUENT FROM SCREENING

SPRAY OF WATER COMING FROM DYEING UNIT

AIR FOR DIFFUSION

COOL&

HOMOGENOUS INFLUENT TO

PH CORRECTIONTANK

PH CORRECTION

IN THIS TANK PH OF THE INFLUENT IS CORRECTED TO MEET THE STANDARD.

ACID OR ALKALI IS ADDED TO THE EFFLUENT BY DOZZING TO INCREASE OR DECREASE THE PH OF INFLUENT RESPECTIVELY.

MULTI-METER TYPE PH METER IS USED.

SCHEMTIC DIAGRAM OF PH CORRECTION

PH CORRECTION

ACID OR ALKALI

INFLUENT FROM EQUALIZATION

TANK

INFLUENT OF DESIRED PH TO DISPERSE UNIT

DISPERSE UNIT

FUNCTION OF DISPERSE TANK IS TO MIX THE SLUDGE COMING FROM RECYCLE TANK WITH WASTE WATER.

IT HELPS TO PROPER AERATION.

SCHEMTIC DIAGRAM OF DISPERSE UNIT

DISPERSE UNIT

( MIXING OF SLUDGE & WASTE)

SLUDGE FROM RECYCLE TANK

INFLUENT FROM PH CORRECTION

TANK

MIXED INFLUENT & SLUDGE TO AERATION

AERATION

FUNCTION OF AERATION IS OXIDATION BY BLOWING AIR.

AEROBIC BACTERIA IS USED TO STABILIZE AND REMOVE ORGANIC MATERIAL PRESENTS IN WASTE.

ABOUT 200 KG AEROBIC BACTERIA IS GIVEN TO THE PLAN FOR 5 YEARS.

SCHEMTIC DIAGRAM OF AERATION

AERATION TANK

MIXTURE OF WASTE WATER & SLUDGE

AEROBIC BACTERIA

AIR

DISCHARGE TO SEDIMENTATION

TANK

ORGANIC MATTER + O2

BACTERIA

NUTRIENTCO2+ HO2 + HEAT

REACTION IN AERATION TANK:

O2

SEDIMENTATION PACK

IN THIS TANK SLUDGE IS SETTLED DOWN PARTIALLY

SEDIMENTATION PACK PROVIDES THE ADVANTAGE OF FAST SLUDGE SEPARATION

SEDIMENTATION TANK

IN THIS TANK SLUDGE IS SETTLED DOWN FINALLY.

EFFLUENT IS DISCHARGED FROM PLANT THROUGH A FISH POND.

SLUDGE IS PASSED TO THE THICKENING UNIT.

SCHEMTIC DIAGRAM OF SEDIMENTATION TANK

SEDIMENTATIONTANK

WASTE WATER FROM

SEDIMENTATION PACK

SLUDGE TO THICKENING UNIT

EFFLUENT

EFFLUENTDISCHARGE

FISH POND

FISH POND INDICATES THE HIGHER DEGREE OF TREATMENT IN THIS ETP

EFFLUENT DISCHARGE

SLUDGE THICKENING UNIT

IN THIS UNIT SLUDGE IS DRIED AND DISCHARGED.

A PARTIAL AMOUNT OF SLUDGE IS RETURNED BACK TO THE AERATION TANK FROM THICKENING UNIT THROUGH RECYCLE TANK CALLED RETURN SLUDGE TANK AND DISPERSE TANK.

SCHEMTIC DIAGRAM OF SLUDGE THICKENING UNIT

SLUDGFE THICKENING UNIT

SLUDGE FROM SEDIMENTATION

UNIT

SLUDGE DISCHARGE

SLUDGE TO RECYCLE TANK

DRIED SLUDGE

RETURN SLUDGE TANK

FUNCTION OF RETURN TANK OR RECYCLE TANK IS TO MIX WATER WITH SLUDGE

THIS MIXTURE IS THEN PASSED TO AERATION TANK THROUGH DISPERSE TANK.

ADVANTAGE OF RECYCLE SLUDGE TO AERATION TANK

SLUDGE AGAIN OXIDIZED TO MINIMIZE THE POLLUTION FROM SLUDGE.

ALIVE BACTERIA OF SLUDGE IS AGAIN USED IN AERATION TO UTILIZE THIS BACTERIA.

SLUDGE RECYCLE TANK

SLUDGE FROM THICKENING UNIT

MIXING OF SLUDGE & WATER

SLUDGE TO AERATION TANK THROUGH DISPERSE UNIT

THANKS TO ALL