Giddi Washery
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ENVIRONMENTAL STATEMENT OF GIDDI WASHERY FOR 2016-17 CENTRAL COALFIELDS LIMITED SEPTEMBER 2017 EXECUTIVE SUMMARY E.1 This Annual Environmental Statement Report has been prepared as per Gazette Notification No. GSR 329 (E) dated 13th March, 1993 laid down by Ministry of Environment & Forests. The "Environmental Audit" has been subsequently renamed to "Environmental Statement" vide MOEF Gazette Notification No. GSR 386(E) dated 22nd April, 1993. E.2 The Giddi Washery Project of Central Coalfields Limited (CCL) was commissioned in the year 1970. The project has been designed for 2.50 MTY of ROM (Run of Mines) coal input. The product from the washery is clean coal whereas middling and rejects are by-products. E.3 Quarterly environmental monitoring of Giddi Washery Project has been carried out regularly by CMPDI for air, water and noise parameters. However, of late monitoring is now being done fortnightly by CMPDI from April 2017. The analysis results for the year 2016-17 are enclosed along with this report. E.4 The concentration of SO2, NOx monitored for the Washery and in its ambience is within permissible limits. The concentration of SPM is also mostly within permissible limits. E.5 The noise level has been monitored at various points in the project and the same has been found to be within permissible limits. The water quality has no impact on natural water resources as it is discharged into an abandoned quarry and not outside. E.6 No hazardous waste is being produced either from the production process or from pollution control facilities. E.7 The Environmental Statement for Gidi Washery Project for the year 2016-17 has been presented in Form-V (Part A to Part I) in this report. GIDI WASHERY 1.1 General Profile The Gidi Washery of Central Coalfields Limited was initially designed for a raw coal input of 2.84 MTY and installed in the year 1970 with Polish Collaboration. It was designed to treat high volatile semi-coking coal produced from Gidi 'A', Saunda, Bhurkunda, Argada & Sirka seams. The Washery was to produce clean coal, middlings and rejects. However, due to problem in the supply of clean coal, the operation of the Washery was delayed. The Washery was put into operation in 1973 for beneficiating medium coking coal produced from Kedla, Jharkhand, Ara and other nearby mines for supplying beneficiated Medium Coking Coal to steel plant for production of metallurgical coke. Conversion of the Washery to beneficiate medium coking coal posed some restrictions in the washing circuit of the Washery, as such the Washery capacity was derated to 2.50 MTY of raw coal. 1.2 Location The Giddi Washery is located near Giddi 'A' Colliery in South Karanpura Coalfields in Hazaribagh District of Jharkhand. The Damodar River, which forms the western and southern boundaries of the Giddi block ‘A’ has taken a 'Z' bend here. The Gomoh-Dehri-on-Sone branch of Eastern Railway runs within 4.80 kms of the Giddi 'A' block, on the south. Ranchi Road Railway Station and Barkakana Railway Station on Eastern Railway are at a distance of about 24 kms and 20 kms from Giddi Washery respectively. The Washery is accessible by good metalled road from Ranchi via Ramgarh and is about 70 kms from Ranchi by road. 1.3 Process Flowsheet: The process Flowsheet of Giddi Washery includes the following: - Receiving arrangement of ROM coal coming from the linked mines by trucks / tippers in raw coal hoppers in NRCRA and RCRA ends. - Crushing of raw coal down to 150 mm in 2 nos. (1 no. operating + 1 standby), 250 TPH (each) single / double roll crushers. - Stocking and blending of 150-0 mm crushed coal in 5000 Te raw coal bunker with reclamation arrangement by plough wheel reclaimers . - Wet screening of 150-0 mm coal in 3 nos. 250 TPH (each) screens at 25 mm to yield two fractions viz. 150-25 mm and 25-0 mm. - Washing of 150-25 mm fractions in two nos. 250 TPH (each) Heavy Media DISA separators to yield two products viz. clean coal and sink (middlings). - Depulping and rinsing of clean coal on 2 nos. 200 TPH (each) D&R screens. - Depulping and rinsing of middlings on 2 nos. 120 TPH (each) D&R screens. - Regeneration circuit for magnetite. - Desliming of 25-0 mm coal in desliming sump and 25-0.5 mm fraction is elevated by two elevators for storing in 160 Te surge bunker before Baum Jigs. - Washing of 25-0.5 mm fractions in 3 nos. 165 TPH Baum type three products jigs to produce three products viz. clean coal, middlings and rejects. - Dewatering of 25-0.5 mm clean coal initially on 3 nos. 140 TPH (each) dewatering screens (at 6.00 mm and 0.5 mm screens) and final dewatering of 6-0.5 mm fractions in 4 nos. 75 TPH (each) centrifugal dryers. - Storage of middlings from the DISA bath and Baum jigs in 4000 Te middlings bunker. - Collection of slurry (fines) in 2 nos. thickeners after - Recovery of coarse particles on desliming and dewatering screens and disposing separation of coarse particles in settling tanks, for thickening .this along with clean coal. - Pumping of thickened slurry on sieve bend and high frequency screens to recover +0.5mm particles. Disposing +0.5 mm particles on ground through surge bunker. - Conditioning of slurry after separation of coarse particles in conditioners. - Adjustment of pulp density of slurry in pulp density adjusting tanks. - Up gradation of slurry in 2 bands of floatation sections to yield two products viz. fine clean coal and tailings. (Floatation section was designed to deal with the slurry dumped previously also but now it is abandoned due to non-floatability of the dumped slurry). - Dewatering of fine clean coal in 3 nos. disc filters. - Storage of fine clean coal along with the clean coal 150-25 mm from HM DISA separator and 25-0.5 mm clean coal from Baum Jig section in 5000 Te clean coal bunker. - Thickening of floatation tailings in two nos. of tailing thickeners. - Treating the thickened tailings from the underflow of tailing thickeners into three nos. of settling ponds for natural dryings. - Reuse of clearified water from tailing thickeners of floatation section and from slurry thickeners in the washing circuit. - Collection of rejects from Jig section in a bunker and subsequent disposal by trucks / tippers. The process flow sheet of Washery has been appended as Annexure-I. 1.4 The production of clean coal, middlings and generation of rejects from the Washery for the last two financial year i.e. 2016-17 and 2015-16 is as under: Sl No. Particulars Production in tonnes 2016-17 2015-16 1 R.O.M. Coal (input) 224745.42 355677 2 Clean Coal 131900 168000 3 Slurry 43040 - 4 Rejects 59520 107800 The average ash content in the raw coal feed, clean coal, middling and rejects for the previous two financial years is as under: ENVIRONMENTAL STATEMENT FORM FORM-V Environmental Statement for the financial year ending 31st March, 2017 Part-A 1 Name & Address of the Project Name Giddi Washery Project Place Giddi-A Post Office Giddi-A Project District Hazaribagh State Jharkhand 2 Industry Category Primary 3 Production Capacity 2.50 MTY of R.O.M. Coal Input 4 Date of last Environmental Statement Last Environmental Statement Report submitted Report for the year 2015-16 was submitted in September, 2016 Part-B Water and Raw Materials Consumption S No. Particulars Water Consumption (m3/ annum) 2016-17 2015-16 1 Industrial 58615 85437.5 2 Domestic 38400 38400 Total 97015 123837.5 Name of the Water consumption per Unit of product Product unit of product 2016-17 2015-16 Clean Coal 0.43 m3 / tone 0.42 m3 / tone Raw Materials Consumption Name of raw material Raw Material consumption per unit of product 2016-17 2015-16 R.O.M. Coal 1.92 tonne / tonne of clean 1.93 tonne / tonne of clean coal coal Part-C Pollution Generated (Parameters as specified in the consent issued) Sl Nature of Quantity of Pollution Percentage variation from No. Pollution Generated prescribed standards with reasons 1 Air It is difficult to quantify the air The levels of suspended pollutants in Washery premises particulate matter (SPM), SOx, but the concentration of these NOx have been found to be are measurable and is given in mostly within prescribed Annexure standards. 2 Water a. Discharge from Washery – Nil The water quality results are appended as Annexure-III (A) to (C). The Washery effluent has no impact on the natural water resources. 3 Noise Noise level has been recorded The noise level in the project is and placed in Annexure- within tolerance limits. Part-D (as specified under Hazardous Wastes Management & Handling Rules, 1989) Sl No. Source of Hazardous Waste Total Quantity in Kgs During financial year 2016-17 1 From Process No hazardous waste as specified by Ministry of Environment & Forests (MOEF) rules, 1989 for Waste Management and Handling is generated. 2 From Pollution Control Facilities NIL Part-E Sl No. Source of Solid Waste Total Quantity in Total Quantity in million tonnes million tonnes During financial During financial year 2016-17 year 2015-16 1 From Process 0.224 0.239 2 From Pollution Control Facilities Nil Nil 3 Quantity recycled or reutilized 0.81 0.83 PART - F PLEASE SPECIFY THE CHARACTERISTICS (IN TERMS OF CONCENTRATION AND QUANTUM) OF HAZARDOUS AS WELL AS SOLID WASTE AND INDICATE THE DISPOSAL PRACTICE ADOPTED FOR BOTH THESE CATEGORIES OF WASTES F.1 There is no hazardous waste produced from either washery operations or from pollution control facilities.