Terms of Reference for EIA Studies Rayanakere Terms of Reference Rayanakere Executive Summary Mysuru also known as Mysore, is the third largest city in the state of Karnataka, India, which served as the capital city of Mysore Princely Kingdom (Kingdom of Mysore) for nearly six centuries, from 1399 until 1947. Located at the base of the Chamundi Hills about 146 km (91 mt) southwest of the state capital Bangalore, it is spread across an area of 128.42 km2(50 sq mt). The city has been divided into 65 municipal wards and the approximate population is 920550 (2011 Census) Municipal Solid Waste Management (MSWM) is an obligatory function of the Urban Local Bodies (ULBs) under the Karnataka Municipalities Act, 1964. Also, the Municipal Solid Waste, (Management and Handling) Rules, 2000 (“MSW Rules”) made it mandatory for an Urban Local Body (ULB) to practice sanitary treatment and disposal of the MSW generated. The estimated quantum of MSW currently generated in the city is approximately 402 MT. MCC has been carrying out collection and transportation of MSW in the city by deployment of its own resources and through private operators. A compost facility of 200 TPD capacity was also set up for treatment of MSW in the year 2001. The operations of the facility have however been intermittent over the past few years. However the compost plant even after augmentation of the bed by 200 TPD is receiving waste of about 150 TPD due to lack of infrastructure facilities and compost bed area. A sanitary landfill exists to the Eastern side of the compost processing plant. However currently there is a lack of handling 250 TPD of waste that is directly finding its place as a dump within the Sewage farm area. There is a gap in the primary and secondary collection system. Adequate tools and equipment for ZWM units are provided. Capacity of the existing compost facility at Sewage Farm is increased by providing adequate windrows platform, shed for windrows platform, leachate drain etc., The Mysore City Corporation is willing to improve its solid waste Treatment and disposal facility in lines with MSW Rules 2000 for a minimum design period of 20 years. This is an in-house Report. Based on the site analysis and secondary data analysis, it has been proposed to develop an integrated system for treating the municipal solid waste. It is proposed to have mechanical and partial manual ways of separating the waste into inserts, combustible waste and compostable waste. The biodegradable waste will be stabilized using windrow method for 28 days and further curing of 14 days there by converting the waste into compost which will meet FCO standards. The best possible recyclables like PET bottles, metal, HDPE/LDPE plastics will be recovered and sold to market. The combustible waste like cloth, paper, plastic covers, twigs etc. will be converted to fuel. The inerts like silt, stones, soles etc. to be landfilled using scientific methods at sewage farm. An administration office block with laboratory facility to test leachate, compost quality and calorific value of RDF will be facilitated within the site. A block for bathing and toilet facility for 40 workers along with dining room is made provision in the site. A workshop for cleaning of secondary and insitu vehicles is proposed with two washing bay at a time, repair bay for two vehicles and store room. Rain water conservation is proposed to ensure optimum utilization of natural resources. A Terms of Reference for EIA Studies Rayanakere zero discharge plant with an efficient leachate treatment facility is proposed where in the effluent will be recirculate for watering the landscaped area. An over cost of Rs. 1396.00 lakhs is estimated for Development of MSWM Facility at Mysuru. Project Description The project site area is located at survey no. 39 at Rayanakere, Gurur Hobli, Mysore. The site belongs to Mysuru City Corporation. It is located at 17 kms from the Mysuru central bus stand and the nearest railway station is at 12 km and Airport 10.5 kms The site is isolated with no habitation till 1 km of radius area but has STP of 30 MLD. The dense habitation is at Srirampura 3kms from the Plant. Presorting section The material accepted for composting is loaded on to the hopper leading to further to 100 mm tromell through belt conveyors with manual segregation prior to trommel. Here the unwanted materials for windrow composting like plastics, rags, styre, etc. and all other large sized recyclables/inert materials etc. shall be segregated. The following figure shows the 100 mm Trommel for presorting the garbage. Presorting The rejects from the 100mm sieve are taken to RDF storage area for further processing/sorting. Sorted waste containing mostly the organic portion of the fresh garbage is taken to the compost pad for windrow formation by reversible conveyors. Windrow management The material passed from 100 mm Tromell are taken to Windrows through the Conveyors. As per the designs a windrow area of 5896 sq.m is allocated. Here the fresh MSW is stacked on the compost pad (non-permeable concrete platform) in the form of Trapezoidal Heaps called Windrows. Here the waste is sprayed with inoculums/bioculture and water to accelerate the digestion process. During windrowing water is added to windrows using water tankers to maintain requisite moisture content. Just after windrowing, bacterial activity starts within 2-3 days. Inside, the temperature of the windrow may go up to 650. Windrows are periodically turned using appropriate mechanical device viz., Grabber and crane arrangements or front-end loader with backhoe arm or Windrow turner to provide proper aeration and temperature control. This waste is then stacked in the form of windrows again. The cross section of the windrows is so adjusted that it would get optimum surface area to volume ratio. Adequate spaces are allotted for fresh garbage for windrows. On compost pad, digestion of composting mass is achieved and for further stabilization, the material is shifted to next row after 7 days. Like wise 4 windrow turnings in 4 weeks time shall be made with windrow turning of twice per week. Terms of Reference for EIA Studies Rayanakere Tromell screen Preparatory section -15 tph capacity suitable for 200 tpd compost plant After 28 days of decomposition of waste, the material is sieved in the secondary section wherein 35 mm Tromell and 16 mm tromell are placed in series. The rejects from the 35mm sieve and 16 mm sieve are taken to RDF storage area for further processing. As per designs an area of 1265 sq.m is allocated for housing Secondary Section Facility with 35 mm and 16 mm Sieve. Curing section Material coming out of the 16mm sieve is stored in curing section for 12 days for further stabilization and moisture control. Some additive as rock phosphate may be added at this stage to improve the quality of the final product. The material is stored under the same roof and concrete flooring. The building is properly ventilated for light and air circulation. As per designs an area of 963 sq.m is allocated for Curing purpose. Refinement /finishing section After 12 days of curing period the material is sieved using 4 mm sieve for refinement of final compost. As per designs an area of 735 sq.m is allocated for housing Finishing Section Facility with 4 mm Sieve. The figure below indicates the 4mm Tromell for production of final compost. The rejects from the 4 mm sieve are taken to RDF storage area for further processing. Packing and storage section From the refinement section, the final; product so produced will be black in color, fine powdery in nature, does have earthy aroma and is completely free from pathogenic organisms and weed seeds. This product is the one, which has undergone sanitization and stabilization. This ensures pH and C : N ratio at the required levels. This end product is called “Organic Manure” and further it could be enriched using organic additives. This high quality compost is then passed through the packing spout for final packing. At packing spout, material is packed in 50 kg bags and then weighed. Begs are then stitched using portable sewing machine and finally stacked in the finished goods godown with three days storage facilities. As per designs an area of 915 sq. is allocated for housing final Compost after packing. Refuse derived fuel section The solid recovered fuel/ specified recovered fuel (SRF) is a fuel produced by shredding and dehydrating solid waste (MSW) with a Waste converter technology. RDF consists largely of combustible components of municipal waste such as plastics and biodegradable waste. The dry waste coming from presorting and preparatory section will be shredded and bailed to a common size. These cubes will be stored and then sold to Cement factories as fuel in adherence to MSW Rules 2000. Sceintific landfill site Existing Sanitary landfill site at Sewage farm, Mysore shall be utilized for the disposal of inert and an additional SLF of 6 acres shall be constructed at Rayanakere, Mysore. Compost marketing plan Based on the organic waste generation from the City. The Compost Plant produces a total quantity of about 24 tonnes per day and this will sold to the nearby agriculturists/farmers/institutes. Terms of Reference for EIA Studies Rayanakere Note : The above values have been calculated based on the assumption that the intake of MSW (100 TPD) . The leachate generated is treated in existing STT and the inerts are disposed off to existing landfill at Vidayaranyapuram. .