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http://dx.doi.org/10.17137/korrae.2018.26.3.33

A Basic Study on the Recycling of Dredged Sewage Sediment  

Kim, Hong Min (Haedong Construction Company)
Choi, Yun Jeong (Department of Biological and Environmental Engineering, Semyung University)
Yoon, Seok-Pyo (Department of Biological and Environmental Engineering, Semyung University)
Kim, Jun Kyoung (Department of Fire and Disaster Prevention, Semyung University)
Publication Information
Journal of the Korea Organic Resources Recycling Association / v.26, no.3, 2018 , pp. 33-37 More about this Journal
Abstract
In order to recycle sewage dredging soil, we analyzed particle size distribution and organic content of dredged sewage sediments. Based on this, it was determined that particles with relatively low organic content of 1.0 mm or more could be recycled as fine aggregate. Although it was inorganic at the size of 5 mm or more, it contained a number of foreign substances other than fine aggregate, which were needed to be removed with a sieve. Since there are volatile suspended solids between 1.0 and 5.0 mm size, they were removed by means of flotation. Fine aggregate was obtained from dredging soil by screening followed with flotation method, and the proportion of fine aggregate obtained in this study was around 38 %.
Keywords
sewage sediment; recycling; sieve separation; flotation; organic content;
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