parth laboratories pvt. ltd., rajkot –...
TRANSCRIPT
PARTH Laboratories Pvt. Ltd.,
Rajkot – Gujarat.
ANNEXURE
Point Wise Submission of Additional Details as requested by the SEAC
Sr. No. Information Sought Attachment Page No.
1 Give characteristics of raw effluent, after treatment and before treatment and before evaporation. APPENDIX – A 1
2 Compliance of Point No.: 5 & 8 APPENDIX - B 2 – 10
3
Details of emissions from the stack attached to the evaporator and mitigation plan to ensure control of any of the pollutants
(substances)within prescribed limit as mentioned in the GPCB norms (Whichever is applicable)
APPENDIX - C 11 – 14
4 Characteristics of ML to be recycled with feasibility APPENDIX - D 15
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APPENDIX - A
Characteristics of Raw Effluent and Treated Effluent (before evaporation)
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APPENDIX - B
Manufacturing Details
Diethylmalonate added with Sodium Methoxide is charged in to a reactor and stirred for several hours. Then alkyl Bromide is added and refluxed cooled and pH is adjusted. Subsequently DM Water is added and centrifuged. Solid (Intermediate-I) is thus obtained. The purified wet cake is recrystallised and mother liquor is collected for recycle. Intermediate – I thus obtained is dried and refluxed with industrial solvents. After the reflux, the industrial solvents is distilled and recovered and further distillation gives Intermediate-II, in which caustic flakes is added and the mass is stirred and evaporated to dry and then pulverized which is the Finished Product.
PARTH Laboratories Pvt. Ltd., Rajkot – Gujarat.
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PARTH Laboratories Pvt. Ltd., Rajkot – Gujarat.
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The previous stage wet cake is crystalised in required quantity of water, after the
process of centrifuge filtration the mother liquor is collected and the same is used in for
the crystalisation of next batch after the addition of very little water to top up the
required quantity. By doing this process, the product which is crystalised and believed
it might remained in mother liquor, is regained to overcome the loss of the product. In
general, where it is feasible to regain the product this process is adopted and in our
case it is very much feasible and advantageous.
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Water Consumption
Sr. No. Category
Water Consumption in KL/Day
(Existing as per CC&A)
Water Consumption in KL/Day
(Enhancement) Total Consumption
in KL/Day
1. Domestic 0.300 0.600 0.900 2. Industrial
a. Process 0.200 0.500 0.700 b. Boiler 0.300 0.600 0.900 c. Cooling 0.500 0.800 1.300 Total (Industrial) 1.000 1.900 2.900
Waste Water Generation
Sr. No. Category
W/w Generation in KL/Day (Existing)
W/w Generation in KL/Day
(Enhancement) Total W/w Generation
in KL/Day
1. Domestic NIL NIL NIL 2. Industrial
a. Process 0.100 0.250 0.350 b. Boiler NIL NIL NIL c. Cooling NIL NIL NIL
Total (Industrial) 0.100 0.250 0.350
Raw Materials and Water consumption per MT of production. Sr. No. Name of raw materials Name of product Consumption of raw
materials per MT (in Kg) 1. Diethyl Malonate
Valproic acid and salts
1628 2. N-Propyl Bromide 2621 3. Sodium Methoxide 1103 4. HCl 2825 5. Caustic Flakes 1121 6. Water 1300
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Water Break up : Total i.e. (Existing + Proposal) Please learn that our unit is a single product manufacturer and there are no different
streams of effluent generation from process. The characteristics of the Effluent from
process is as per Exhibit - A
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Adequacy & Efficiency of Waste Water Treatment
Water Environment
The Water Balance Diagram for manufacturing of Valproic Acid & Its Salts (Existing +
Proposed i.e. Total) is as mentioned in Figure: 2 .
The unit procures its water requirement from the Industrial Estate Supply of Aji Industrial
Estate.
Domestic Water:
Consumption:
Domestic Water Consumption for the unit as per existing is 0.3 KL/Day and 0.6 KL/Day for
proposed enhancement i.e. 0.9 KL/Day in Total Entity.
Treatment Scheme:
The entire domestic sewage/effluent generated is entirely disposed off through Septic Tank /
Soak Pit System.
5.2.2 Industrial Water:
Consumption:
As per the present scenario the unit intends to consume fresh water @ 1.0 KL/Day for existing
and 1.9 KL/Day for proposed enhancement i.e. 2.9 KL/Day in Total Entity for its industrial
purpose which includes process, boiler, cooling.
Following the above consumption, the unit envisages 0.1 KL/Day for existing and 0.25 KL/Day
for proposed enhancement i.e. 0.35 KL/Day in Total Entity of effluent generation which shall
be treated through Activated Sludge Process and the treated water as per the standards
governed by various statutory authorities. The treated water is ultimately evaporated through
Steam Jacketed evaporator system. Hence there shall be NIL Discharge of any kind of
Industrial Effluent.
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Treatment Scheme:
The Effluent thus generated by above consumption shall be treated as follows:
1. Effluent from process is collected in equalization and neutralization tank A (Size: 1.6 x 2.46
x 2.00). The effluent is collected for pH 7 to 7.5 by alkali / acid under stirring.
2. Effluent after adjusting of pH is transferred to tank B (Size: 1.6 x 0.92 x 2.00) for setting of
precipitate formed if any.
3. Effluent from tank B is transferred in aeration tank C (Size: 1.6 x 0.92 x 2.00).
4. Effluent from tank C is transferred in tank D (Size: 1.6 x 0.92 x 1.50) for holding and then
to applied energy induced evaporation pan of dia.3’ 9” for complete evaporation, hence
ZERO disposal of Industrial effluent.
- Figure:1 Schematic Diagram of ETP
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Figure:1 Schematic Diagram of ETP
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Details of Evaporator
Evaporator Pan is constructed in Stainless Steal Material. The Pan is provided with Heat Source i.e. the Boiler Steam bearing 80 °C Temperature in the MS Jacket provided in the Evaporation Pan. The Capacity of the Pan is 1 KL is thus adequate to evaporate 0.350 KL/Day of effluent generated in out plant and thus is viable to adopt Zero Liquid Discharge.
The Residue generated from the evaporation process shall be disposed off to TSDF Site.
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APPENDIX – C
Details of Emissions from the Stack attached to the evaporator
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From the above results, we can conclude that there is no requirement of enhancing the
Air Pollution Control Measures attached to the evaporator as the quality of exhaust gas
is well within the standards. It should be also noted that the effluent generated from
our unit is very low i.e. 0.350 KL (350 Liters) Only, and the Total COD Load in our
treated effluent is also very low i.e. 160 mg/L. Thus, there are minimal chances of
higher VOC or any other pollutants above the prescribed level.
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APPENDIX – E
The previous stage wet cake is crystalised in required quantity of water, after the
process of centrifuge filtration the mother liquor is collected and the same is used in for
the crystalisation of next batch after the addition of very little water to top up the
required quantity. By doing this process, the product which is crystalised and believed
it might remained in mother liquor, is regained to overcome the loss of the product. In
general, where it is feasible to regain the product this process is adopted and in our
case it is very much feasible and advantageous.