Solid Waste Management and Search for Alternate Procedures of Waste Treatment, Recycling and Management

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Mr.M.R.Vijaya Kumar


 The composition of solid waste is found by collecting samples of solid waste at seven collecting places in the city. The waste is classified and the percentage of individual components paper, plastic, organic matter, glass, etc. are found. The charts show the percentages of all components and the organic matter is measured at 40 to 60%. The raw organic matter collected from the local vegetables market is a mix of partially decomposed vegetables viz tomato, brinjal, potatoes, green leaves etc. is finely ground and converted to paste form and   subjected to aerobic decomposition. To promote the aerobic decomposition by bacteria’s a small amount of black cotton soil, cow dung, phosphate buffer, manganese sulphate, etc. are added and thoroughly mixed with organic matter and the whole mixture is subjected to oxidation. Different combinations chosen are shown in table no’s 8, 10, 12, 14 and 16 below. The samples are kept under observation and It was found, after seven days the decomposition gradually reduced and completed by around tenth day, beyond which weight became constant manifesting total conversion of organic matter in to minerals.    As oxidation progressed, the offensive odor of the organic matter decreased steadily. The color of the sample turned to greyish black. To make the study useful for agricultural applications, the foliage of  gliricidiasepium and avenue trees are also included in the decomposition process. The completely digested organic matter sample is sent to the University of Agricultural Sciences, to evaluate for its fertility value. The report from the university shows percentage NPK values rightly fulfill the status of manure. Further the Paper and cloth waste are converted in to bags, pen stands and other desktop items.


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