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http://dx.doi.org/10.14481/jkges.2011.12.5.6

The Engineering Characteristics of the Sludge Mixed Soil  

Kim, JungUn (청주대학교 토목환경공학과)
Kim, MyeongKyun (청주대학교 환경조경토목공학부 토목환경공학전공)
Bae, WooSeok ((주)나노지오이엔씨 기술연구소)
Publication Information
Journal of the Korean GEO-environmental Society / v.12, no.5, 2011 , pp. 43-50 More about this Journal
Abstract
As a result of population growth and economic growth, household and industrial wastes continue to rapidly increase every year. Especially, sewage sludge produced at final stage is increasing with the constant construction and putting in good order of the sewage plant. In addition to the government's prohibition for filling up the sludge, it became more and more difficult to discharge wastes to the sea as London Dumping Convention '96 came into effect. And sewage sludge and the livestock wastes are expected to be thoroughly prohibited from discharging to the sea from 2012. So we need desperately economical and useful alternatives to compact and reuse these wastes. The purpose of this study is to evaluate the utilization of solidified sludge-soil mixture as an enhancement and covering material. To determine the proper mixed ratio of solidified sludge, this study conducted basic physical properties tests, compaction tests, uniaxial compression tests, and permeability test. It was found that the higher the ratio of solidified sludge, the lower the coefficient of permeability. Upon the results of particle size distribution, the mixed ratio of solidified sludge that meet the enhancement material condition was 59% or lower for SP granite soil and 48% or lower for SM granite soil respectively.
Keywords
Sewage sludge; Solidified sludge-soil mixture; Mixed ratio; Compaction tests; Permeability test;
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