| File Note: |
The industry was visited by the undersigned alongwith AEE of this office on 1.8.2019 and facts noted during visit are mentioned in the note of AEE,which may kindly be perused.In addition,it is intimated as under:
1.The industry has not yet completely utilized the entire sludge for manufacturing of compost despite the fact that it was asked to complete it by 15.7.2019.Still 1000-1200KL of sludge is lying in one of the bio-digester as informed by the representative of the industry during the visit.
2.Although the industry has laid down the pipeline for transporting the wastewater of all the streams except spent wash,which is handled in the MEE and incinerated in the boiler furnace, of distillery section to treat in the ETP of sugar mill section,but the industry has not taken any step to upgrade the said ETP so far.The physical condition of the ETP was not upto the mark.
3.The sludge drying beds were seen in bad conditions.
4.There was stagnation of wastewater in a significant area where plantation has been developed, as shown in the photographs attached herewith.
5.Near the ETP area, the industry has demarcated a stretch of land by way of providing boundary wall. The representative of the industry informed that this stretch is used for disposal of fuel ash. However, stagnation of wastewater was seen in a huge area in this stretch and the physical condition of this area showed that the industry is discharging its industrial wastewater at this site. In order to check the characteristics of wastewater, a sample has been collected and the same has been sent to PBTI Lab, Mohali for analysis. The industry has provided two tubewells for groundwater remediation and both these tubewells were seen submerged in the stagnation area. So, there is possibility of entrance of untreated wastewater into these tubewells resulting into contamination of groundwater. Overall condition of this stretch was pathetic.Photographs of this area are attached herewith.
6.The industry has submitted the scheme prepared by M/s Anmol Environment Solutions,Merrut for upgradation of the existing ETP of sugar mill section to treat the wastewater of sugar mill and distillery section combindly.The details given the report are as under:
A. Bar screen chamber is proposed to be provided.
B.Size of oil and grease trap is slightly less.
C.Anaerobic tank is of adequate size and is capable to reduce conc. Of BOD to the tune of 65%.
D.Capacity of existing aeration tank is adequate.
E.Capacity of existing secondary clarifier calculated based on surface loading rate , is adequate.
F.Existing floating type surface aerators will be replaced with diffused aeration system.
G.Chlorination process will be inserted before filteration process.
H.Existing sludge drying beds are adequate.
I.Multigrade and activated carbon filters would be installed.
7.The consultant has considered that total wastewater generation from sugar mill and distillery section is 1452.48 KLD and 604.44KLD,respectively.The consultant has assumed the total wastewater generation of both the units as 2000KLD and combined BOD, COD and TSS level of 1950mg/l, 5000 mg/l and 350 mg/l,respectively.
8.The consultant has not mentioned the values of bio-kinetic parameters on the basis of which anaerobic and aerobic biological treatment system has been designed.
9.The secondary clarifier has been designed only on the basis of hydraulic loading and solid loading has not been taken into account for designing of the same.
10.Chlorination has been recommended to be provided before tertiary treatment,which is not in order.Since at this place, the conc. Of organic matter will be more as compared to after tertiary treatment,so there are more chances of formation of disinfection bye-products,which may be carcinogenic in nature.
11.When only distillery effluent will be treated in the ETP during the off- season of sugar mill, the HRT in the aeration will be too high and substrate loading will be too less, then there will be requirement of adjustment of the values of operational parameters of the ETP but nothing in this regard has been mentioned in the report.
In light of facts mentioned in the said note, it is recommended that consent under the Air Act,1981 may be refused and further action under the said Act may be initiated against the industry. |
