BHOPAL MUNICIPAL SOLID WASTE PRIVATE LIMITED Regd Office: 20th Floor, A Wing, Marathon Futurex, N. M Joshi Marg, Lower Parel, Mumbai-400013, Tel No: 022 71084444, Fax No. 71084500 Ref: BHOPAL/MSW/EC/24112018 Date: 24th November 2018 To, Dr. S. Kerketta, Director, IA.I New Delhi Subject: Proposed 23 MW Municipal Solid Waste based Power Plant at Villages Kolua Khurd, Adampur Chhavani, Phanda Block, Huzur Tehsil, Bhopal District by M/s Bhopal Municipal Solid Waste Private Limited. – reg. Environment Clearance Ref: 1. Letter No J-13012/16/2017-IA.II (T) Respected Sir, We thank you for your support and cooperation so far for Environment Clearance for Bhopal project. Please find our response as follows: Point 5i – Quantity of unsegregated MSW and waste for feeding to the boiler and characteristics of MSW: We wish to confirm that the proposed Waste to Energy power plant is designed to fire processed waste and not unsegregated waste. The plant is designed with an installed capacity to fire 1050TPD of processed waste of 1650 kcal/kg Net Calorific Value (NCV) to produce 21MW of gross electric power by firing processed waste. Since, it’s difficult to provide a single boiler capable of firing 1050TPD of processed waste, we shall be providing two lines/numbers of boilers with an installed capacity of 750TPD (15MW) and 300TPD (6MW). The steam from both the boilers shall be combined together and same shall be fed to a common 21MW steam turbine. Generator also shall be of 21MW capacity. Please see details of waste projection from Bhopal city and adjoining cluster areas as given by Bhopal Corporation in the Project Information document (PIM), in the table attached below. Please also see the summary table based on the waste generation attached below. Mandide Obaidulla Total Gross power Year Bhopal Berasia Sehore Ichhawar Kothri Ashta Total Total Old legacy ep hganj Waste mixed processed waste fired Fired generated, MW @1650kcal/kg TPD TPD TPD TPD TPD TPD TPD TPD TPD TPD TPD TPD NCV Plant yet to be 2018 1033 19 7 9 38 4 3 16 1129 790 0 0 commissioned Plant yet to be 2019 1055 19 7 9 40 4 3 17 1154 808 0 0 commissioned 2020 1077 20 7 10 41 5 3 18 1181 827 223 1050 21 2021 1100 21 7 10 42 5 4 19 1208 846 204 1050 21 2022 1123 22 8 10 44 5 4 19 1235 865 185 1050 21 2023 1147 22 8 11 45 5 4 20 1262 883 167 1050 21 2024 1171 23 8 11 47 5 4 21 1290 903 147 1050 21 2025 1195 24 8 11 48 5 4 22 1317 922 128 1050 21 2026 1220 25 9 12 50 5 4 23 1348 944 106 1050 21 2027 1246 26 9 12 52 6 4 24 1379 965 85 1050 21 2028 1272 27 9 12 53 6 5 25 1409 986 64 1050 21 Registered Address: 513/A, 5th Floor, Kohinoor City, Kirol Road, Kurla (W), Mumbai- 400070 CIN: U40100MH2016PTC287576 BHOPAL MUNICIPAL SOLID WASTE PRIVATE LIMITED Regd Office: 20th Floor, A Wing, Marathon Futurex, N. M Joshi Marg, Lower Parel, Mumbai-400013, Tel No: 022 71084444, Fax No. 71084500 2029 1299 28 9 13 55 6 5 26 1441 1009 41 1050 21 2030 1326 29 10 13 57 6 5 27 1473 1031 19 1050 21 2031 1354 30 10 13 58 6 5 29 1505 1054 0 1054 21 2032 1382 30 10 14 61 6 5 30 1538 1077 0 1077 21 2033 1411 31 11 14 63 6 5 31 1572 1100 0 1100 22 2034 1441 32 11 14 65 7 6 33 1609 1126 0 1126 22 2035 1471 34 11 15 67 7 6 34 1645 1152 0 1152 23 The attached tables above indicate the total unsegregated waste expected to be generated in Bhopal city and the cluster cities and towns. We will pre-process this waste to produce processed waste and quantities of the same are Registered Address: 513/A, 5th Floor, Kohinoor City, Kirol Road, Kurla (W), Mumbai- 400070 CIN: U40100MH2016PTC287576 BHOPAL MUNICIPAL SOLID WASTE PRIVATE LIMITED Regd Office: 20th Floor, A Wing, Marathon Futurex, N. M Joshi Marg, Lower Parel, Mumbai-400013, Tel No: 022 71084444, Fax No. 71084500 mentioned in the table. The unsegregated waste available is expected to increase from 1129TPD in 2018 to 1645TPD in 2035. Currently, about 700TPD to 800TPD is collected from Bhopal city alone. The Waste to energy power plant will take about two years to be commissioned and the waste will be stored and will be available for firing in the boilers. Bhopal Corporation is currently collecting this waste and in due course, we will be doing the same. This legacy waste collected for two years is expected to be about 511000 tons to 584000 tons. In the initial years when the daily processed waste available is less than 1050TPD, we will be using part of this old legacy waste daily to generate 21MW power as shown in the table above and will completely use the same over a period of time till fresh waste available itself is sufficient to produce 1050TPD processed waste. The characteristics of MSW as given in the Project information document is mentioned in the table below. Physical composition The waste analysis based on the physical waste characteristics is given below. Waste qty Calorific Average Corrected % Total Heat Moisture Moisture Waste component based on value % without E-waste % Value Kcal content % content tons 1180TPD (TPD) (kcal/kg) Organic 54.35 54.81% 647 457 295571 45% 291 Plastic 12.83 12.94% 153 4815 735137 2% 3 Paper 6.94 7.00% 83 2500 206464 6% 5 Wood 1.71 1.72% 20 2225 45276 35% 7 Cotton/Textiles 6.18 6.23% 74 2818 207241 33% 24 Rubber 1.58 1.59% 19 3495 65713 11% 2 Leather 1.35 1.36% 16 3495 56147 11% 2 Metal 1.1 1.11% 13 -35 -458 6% 1 Glass 2.12 2.14% 25 -17 -429 3% 1 Inert 11 11.09% 131 -58.6 -7671 10% 13 E-waste 0.84 Total 100 100% 1180 1602991 349 Actual calorific value 1358 kcal/kg of mixed waste Moisture content of 30% mixed waste The calorific value of mixed/unsegregated waste as calculated based on physical composition is 1358kcal/kg. However, by storing the waste in pit for 5 to 6 days and allowing leachate to drain out, we can reduce overall moisture in waste and improve its calorific value as explained below. Registered Address: 513/A, 5th Floor, Kohinoor City, Kirol Road, Kurla (W), Mumbai- 400070 CIN: U40100MH2016PTC287576 BHOPAL MUNICIPAL SOLID WASTE PRIVATE LIMITED Regd Office: 20th Floor, A Wing, Marathon Futurex, N. M Joshi Marg, Lower Parel, Mumbai-400013, Tel No: 022 71084444, Fax No. 71084500 Point 5ii – Details of preprocessing/processing for reduction of inert materials, moisture and composting material: The entire unsegregated/mixed waste received shall be discharged by trucks into the Waste pit and shall be stored there for about 5 to 6 days before any pre-processing is done. The waste pit has sections. The waste received in one day is stored in one section and it is stacked vertically in the pit. This vertical sacking i.e. piling of waste increases the density of waste and forces leachate to drain out of the waste. This leachate is taken to and treated in the Effluent treatment plant (ETP) to produce treated water which is then used as process water for power plant. During storage, Enzymes containing bacteria are also sprayed into the stored waste to expedite decomposition of waste. These enzymes i.e. bacteria start aerobic reaction within the biodegradable waste in presence of oxygen. This is an exothermic reaction in which the bacteria breakdown the biodegradable to produce Methane (CH4) and heat. The heat produced increases the temperature of the waste mix to about 55 deg.C to 60 deg.C and this causes the inherent and leftover surface moisture in the waste to evaporate. The primary combustion air for boiler is sucked continuously from the waste pit and due to this reason, the hot air containing methane and moisture is continuously sucked by the primary combustion air fan and is delivered to the boiler where methane gets combusted to produce heat and thereby steam. The continuous sucking of air from the waste mix continuously makes fresh oxygen available for keeping the exothermic aerobic reaction going on and the waste keeps on getting dry. After 5 to 6 days of this process going on in the waste pit, considerable amount of water is removed from the waste mix, which increases its net calorific value to 1650kcal/kg. Pre-processing – Please see the attached Process Flow Diagram (PFD) and Mass Balance Diagram (MBD) for 1180TPD unsegregated/mixed waste receipt: The unsegregated/mixed waste received is first weighed on the weighbridge and the quantity of waste received is recorded. Then this mixed waste is unloaded into the RCC waste pit and is stored there for 5 to 6 days. Then this dried waste is loaded by grab crane into a feed hopper which in turn feeds the same into a Trommel with (-) 80mm sized holes. Trommel screens out (-) 80mm size organic food waste which is now dry and a belt conveyor takes this dry organic waste back to the waste pit. The oversized inerts and paper, plastics, cardboard, clothes, leather etc which is collectively called RDF is discharged by trommel into another belt conveyor.