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Effluent Treatment &
Discharge
| Attribute |
Unit |
Limit |
Treated Effluent Value |
| Flow |
M³/Ton of cane crushed |
< 0.40 |
0.10 - 0.30 |
| PH |
pH Scale |
5.5 - 8.5 |
8.00 - 8.20 |
| Temperature |
°C |
< 30 |
25 - 28 |
| BOD |
PPM |
< 30 |
25 - 30 |
| COD |
PPM |
< 250 |
225 - 230 |
| Oil & Greece |
Mg/Lit |
< 10 |
2 - 3 |
To make best use of the treated effluents during 1994 to 1997 "Sugar
unit - Khatauli has made an expenditure of over then Rupee 1000000/-
(Ten Lakh). Adjacent to the effluent treatment plant The "Unit"
also owns 34 acres of farmland. Through 2 Km long hume pipes line laid
across the entire farm and social forestry covering over 34 acres,
treated effluents from ETP & STP after having been evaluated for
ferti-irrigation is used on the farm and un social forestry.
| Water class |
Sodium (Na) % |
EC µmhos/cm 25°
c |
SAR* |
RSC* Meq/l |
| Excellent |
< 20 |
< 250 |
< 10 |
< 1.25 |
| Good |
20 - 40 |
250 - 750 |
10 - 18 |
1.25 - 2.0 |
| Medium |
40 - 60 |
750 - 2250 |
18 - 26 |
2.0 - 2.5 |
| Bad |
60 - 80 |
2250 - 4000 |
> 26 |
2.5 - 3.0 |
| Very Bad |
> 80 |
> 4000 |
> 26 |
> 3.0 |
(Irrigation water quality evaluation
standards fixed by CPCB & CBWG)
(*SAR - Sodium Absorption Ratio, *RSC - Residual Sodium Carbonate)
In case either parameter not matching the standards of the irrigational
water quality, laid down by "Central Ground Water Board" &
"Central Pollution Control Board" treated effluents by the
help of a 1.6-Km long cemented channel is taken to a Nala & finally
discharged to canal called locally "Nagin Nadhi".
ENVIRONMENT AND POLLUTION MANAGEMENT
PROCESS FLOW DIAGRAM FOR EFFLUENT TREATMENT AT E.T.P.
EFFLUENT
WATER
PASSED THROUGH DESILTING CHANNEL FOR SETTLING SILT ETC.
OIL AND GREASE SEPARATION
MILK OF LIME ADDITION (pH= 7.1 - 7.2 )
SETTLING IN ANAEROBIC TANKS - COW DUNG ADDITION TO DEVELOP BIOMASS
AERATION IN AEROBIC TANKS - ADDITION OF UREA AND DI - AMMONIUM
PHOSPHATE AS NUTRIENT FOR BACTERIA
SETTLING IN CLARIFIER |
SETTLED SLUDGE SEND TO SLUDGE DRYING BEDS |
DECANTED CLEAR TREATED WATER FOR DISCHARGE |
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Effluent
Treatment & Discharge |
