Research
Solid Waste Management Strategy & Improvement of Existing Scenario Based on Market Waste
Waste never a good part of the Environment, whether sometimes it is useful when it is recyclable. However in this present situation the waste liable for a lot of unwanted event. It degrades our climate, modifies our environment as well as create unsuitable situation. In many underdeveloped & developing countries still it is a major problem due to lack of proper management. This creates a lot of problems to the environment. Sustainable management for market solid waste is a concerning fact in Khulna city to lessen environment pollution and odor nuisances which are also contribute to the climate changes. This study helps to scrutiny the existing management process and introduces a new proposal of management process to abate environmental pollution. This study march by the following steps (1)The location and the covered area of the markets are resolve (2)The quantity and the types of waste produce in the market is analyze (3)The storage capacity and the collecting techniques is analyze (4) Management techniques (recycling, Viennese, BOD pending) proposed. The result of this study gives an idea for selecting place for the management. Here different pans are used for different waste storage and these are collect separately which reduce hazardous effect on the environment.
Effect of Leachate on Surrounding Surface Water: Case Study in Rajbandh Sanitary Landfill Site in Khulna City, Bangladesh
Leachate is the aqueous effluent generated as a consequence of rainwater percolation through wastes and the inherent water content of wastes themselves. Its quality is the result of biological, chemical and physical processes in landfills combined with the specific waste composition and the landfill water regime. In Khulna city, municipal solid waste is dumped in the Rajbandh landfill site where large amount of leachate is produced every day. This leachate is pretreated by anaerobic process in a pond and pumped out to the surface water from three wells. This pretreated leachate has great impact on surrounding surface water and environment. The aims of this study are to asses and evaluate the environmental impact of the pretreated leachate. In order to do this, some parameters including pH, BOD, COD, Iron content, Alkalinity, TC etc. of the collected leachate and surface water are determined. Obtained values of the parameters are compared with the standard value. Amount of green house gas emission and their effects on human health are also determined and reviewed. Therefore, this paper provides insight regarding how the leachate puts impact to the environment.
