Indian Aluminium Company Limited, Alupuram Smelter Eloor.

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114 Waste: Sources of liquid waste are centrifuge washings during the process of manufacture of ZDC, ZDBC and ZBEC. For storing the hazardous waste of effluent treatment plant sludge removed from sludge dying bed, a roofed temporary storage tank is constructed. Findings: 1. The factory is engaged in the production of Rubber and accelerators (ZDC,ZDBC,ZBECF). The raw material used are Carbon Di sulphide, Di ethyl Amine, MBTS, Di Benzyl Amine, Di n Butyl Amine , Hexamine, DPG,MBTS,Zinc Oxides and Zinc chloride. The board has issued consent for manufacturing 53 t/m of accelerators where as the max production rate reported by the firm is 83 t/m. 2. The source of water is an open well near the bank of the river Periyar.The total quantity of water consumed by the company is reported as 6000 litre /day. The production process reveals that the actual water consumption is much higher than the quantity reported by the company. 3. An effluent treatment plant is provided in the factory premises which is used for treating the effluent generated from Merchem <strong>Limited</strong> and a mother unit functioning in the adjacent property namely Merchem (India)Pvt.Ltd. . The quantity of effluent discharge as per the consent issued to the unit is 13900 litre/day. 4. The effluent treatment plant consists of two raw effluent collection tanks, mixing channel, primary settling tank, aeration tank, secondary settling tank, and sludge dying beds. The effluent generated from both the units are collected in two collection tanks and treated with lime and alum. The effluent after settling is taken to aeration tank for aerobic biological treatment, and settled in secondary settling tank. The overflow from secondary settling tank is discharged into the River Periyar through an open drain. 5. The effluent treatment plant was not working at the time of inspection on 29-11-04. There was no overflow from the secondary settling tank. But there was considerable discharge from the outlet from the overflow channel of the secondary settling tank. Effluent samples of supernatant from the Secondary settling tank and effluent in the overflow channel of secondary settling tank were collected. Water sample was collected for analysis from the well in the factory premises which was found reddish in colour. Solid wastes accumulated and effluent stagnated as a pond just outside the factory boundary in the adjacent land owned by M/s Kunnath Chemicals was also collected for analysis. Source : Sludge from the premises of Kunnath Chemicls near compound of Merchem Edayar Date of sampling : 29-11-2004 Sl. No. Determinant Unit 15 448.4 2 Iron 86535.0 3 Lead 337.4 4 Cadmium 9.3 5 Total Chromium 1344.0 6 Manganese 1098.7
115 This lab report indicates the presence of effluent and ETP sludge in the adjacent premises. 6. Effluent treatment plant was started on seeing the inspection team(08/06/05) by pumping raw effluent from the collection tank to the mixing channel for chemical treatment. 7. According to the company about 3kg/day effluent treatment plant sludge is generated which is dewatered in the sludge drying beds and disposed in the recently constructed temporary storage tank for hazardous wastes. The unit has not obtained authorization under Hazardous Waste(Management and Handling)Rules 1989 for the disposal of hazardous wastes. 8. No Hazardous waste was seen stored in the temporary storage facility during the inspection on 29-11-04. The company authority informed that solid wastes and sludge generated so far from the effluent treatment plant ,since its inception were land disposed after drying in sludge drying beds. During the inspection on 8-6-05 sludge disposal in the temporary facility was seen started . But during the inspection conducted on several occasions effluent is seen discharged into the Periyar River violating the consent condition. 9. The company have obtained Boards consent under the water act upto 31-12-04 for discharging 13,900-l/day effluents. 10. The quality of supernatant effluent sample collected from the secondary settling tank and overflow channel indicate that the effluent quality is varying to a great extent, instead of being similar. The overflow sample discharged through outlet is well within the limits whereas the effluent in the secondary settling tank is highly contaminated as noted below. The result reveal that bypass line is provided for admitting fresh water to the outlet for diluting the effluent. No Determinants Unit Effluent from Secondary Settling tank. 1 pH 5.9 7.0 2 Suspended Solids mg/l 647 15 3 TDS (inorganic) ,, 6900 382 4 Zinc ,, 1.60 ND 5 Chlorides ,, 4000 68 6 Sulphates ,, 800 25 7 Phenolic Compounds ,, 30 0.2 8 Oil and grease ,, ND ND Effluent from overflow channel of Secondary Settling tank 11. The report of analysis of effluent collected on 29-11-04 show that the raw effluent contains high Chlorides(11400 mg/l), Sulphates(2000 mg/l) and Phenolic compounds.
Page 1 and 2: 77 INDIAN ALUMINIUM COMPANY LIMITED
Page 3 and 4: 79 8. The industrial plant was not
Page 5 and 6: 81 5. Industry has obtained consent
Page 7 and 8: 83 Heat Exchangers. The gas then go
Page 9 and 10: 85 1. Concentration and crystalliza
Page 11 and 12: 87 Petro chemical Division is conce
Page 13 and 14: 89 7. The scrubber stack for IVth a
Page 15: 91 the faulty nature of manual anal
Page 18 and 19: 94 Source : FACT - UD Date of sampl
Page 20 and 21: 96 FACT- PETROCHEMICAL DIVISION Nam
Page 22 and 23: 98 scrubbing with ammonia water whe
Page 24 and 25: 100 5. Delay ponds shall be provide
Page 26 and 27: 102 Products : Rare Earths Chloride
Page 28 and 29: 104 recovered. Ammonium di uranate
Page 30 and 31: 106 M/S KEMO GRAVURES , EDAYAR Name
Page 32 and 33: 108 Raw materials : Name Quantity (
Page 34 and 35: 110 The Effluent treatment system c
Page 36 and 37: 112 Date of Sampling 08/06/05. Sl.
Page 40 and 41: 116 Date of Sampling 29-11-04 N o D
Page 42 and 43: 118 Raw Materials: Name of material
Page 44 and 45: 120 Findings 1. The factory situate
Page 46 and 47: 122 Consented Parameters and limits
Page 48: 124 Source : Sud Chemie India Pvt.

Indian Aluminium Company Limited, Alupuram Smelter Eloor.

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