| File Note: |
The details of the case are given in the note of AEE,which may kindly be perused.I visited this industry alongwith AEE on 22.03.19, it was observed as under:
1. The trade effluent is generated from washing of the various pans/machinery and washing of the milk tankers.
2. As informed by the rep of the industry, washing of the milk tankers and CIP of machinery is done on daily basis with water containing 5-6% of caustic soda/lye. So the wastewater containing caustic is also goes to the ETP .He further informed that the entire plant is washed after 40 days or before depending upon the bacterial count found in the process system, with water containing 5-6% of caustic soda/lye.Thus,on that day inorganic load increases on the ETP.The rep of the industry informed that the industry is planning to install automatic on line CIP system of the machinery,which will decrease the inorganic loading in the wastewater.However, he informed that the industry has no planning to install such system for cleaning of takers.On an average about 3-4 tankers are washed on daily basis and each tanker requires about 2-3 KL of water.There is a proven technology for judicious use of water for washing of tankers and recovery of caustic from the wastewater. The industry was advised to provide automatic washing system for tankers and for recovery of soda.
3. A lot of vegetation was observed in the plantation area and as such, it could not be checked whether the treated wastewater is used in a scientific manner or not and whether the entire plantation area has been developed as per Karnal Technology or not.
4. The industry has provided septic tank for the treatment of domestic effluent and it has provided a lift pump for discharge of treated DE into the drain outside the premises of the milk plant,which further leads a natural drain as enquired during visit.The industry was advised to sent the DE after septic tank in the ETP for further treatment.
5. The industry was seen discharging the excess water of spray pond into the channel leading to the ETP,which un-necessary increases the hydraulic loading in the wastewater being treated in the ETP and is required to be removed.
6. The industry has provided 03 no. rice husk fired boilers and one no thermopac .Both the boilers of 3 TPH capacity each,which are rice husk fired, are attached with a common APCD and 1.5 TPH coal fired boiler is attached with a separate APCD,but all these three boilers are attached with a common stack of adequate height.The thermopack is HSD/LDO fired,which is not equipped with any APCD,but with a stack of 17m height,which as per consumption of fuel.
7. The furnace of rice husk fired boiler,which was not in operation was checked by the officers of the Board in the presence of officials of the unit and it was noted that nozzles are fitted in the bed of the boiler,but there was no sand bed.Therefore, the firing mechanism is not based on FBC system but it is based on suspension burning.The Board has allowed to use only rice husk in loose form in FBC boilers and not in suspension burning boiler furnace.Thus, this issue is required to be taken into account.
Since the industry is conforming to the prescribed standards laid down in respect of effluent/emissions,as such,it is recommended that consent to operate under the Air Act,1981 may be renewed upto 31.3.2024,subject to the suitable conditions and following additional conditions:
1.The industry shall explore the possibility to provide sand bed in the furnace of both the rice husk fired boilers,within 3 months and submit a compliance in this regard to the Board.
2 The industry shall submit fuel ash handling and disposal management plan for reuse of the fuel ash by the brick kilns for manufacturing of brick/tiles to the extent possible and environmentally sound disposal of the same,if required at all,within 3 months to the Board.
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