Research on the Properties of Municipal Solid Waste of Chongqing

Abstract

The properties of municipal solid waste is important to design and construction the landfill. In this paper, research the properties of municipal solid waste apply the indoor test and consulting literatures. The results showed that the density of Chongqing municipal solid waste is 430 ~610 , the average is 470 . The water content value of municipal solid waste in China is higher than foreign countries. The specific gravity of municipal solid waste in Chongqing is between 1.70~2.56. The porosity ratio of municipal solid waste in Chongqing between 1.0~4.0. The permeability order of magnitude is approximately . The properties of municipal solid waste includes density、water content、specific gravity and porosity ratio, these parameters will be used frequently when calculation and analysis[1]. And these parameters related to landfill capacity calculation、 stability evaluation、leachate and landfill gas collection system design. Compare to the test of soil engineering properties, the properties test of municipal solid waste is difficult. The reasons are that (1) At different time and area, the municipal solid waste content will present great difference. For example, if the region use coal for heating, the ash content will higher than other regions. (2) Due to the composition uniformity and fifferent bury time, the organic matter degradation is different, so it is difficult to obtain representative samples. (3) The traditional soil sampling and test methods have rules to follow, in contrary, the municipal solid waste sampling and methods haven’t accepted method.