naa a22 4500 510818870 CHVBK 20180411083521.0 cr unu---uuuuu 180411e20130101xx s 000 0 eng 10.1007/s11814-012-0089-x doi (NATIONALLICENCE)springer-10.1007/s11814-012-0089-x Treating urban dredged silt with ethanol improves settling and solidification properties [Elektronische Daten] [Zhao-Hui Chai, Guo-Lu Yang, Meng Chen] The organic matter content in urban dredged silt is high for the indraft of municipal sewage, and it seriously influences the utilization of urban dredged silt. It is necessary to find a method to solve this problem. This paper presents a method of treating the silt with ethanol (STE), considering that ethanol is a good organic solvent which can dissolve many kinds of organic matter, and optimizes the treatment conditions through Box-Benhnken design (BBD) experiment with organic matter removal efficiency as the response. The ideal conditions were as follows: action time, 47 min; ethanol concentration, 41%; ratio of ethanol to silt, 54: 1 ml/g with organic matter removal efficiency of 51.12%. Then, settling and solidification properties of raw silt and STE were explored through laboratory experiments. The results show treating urban dredged silt improved the settling and solidification properties of silt. Korean Institute of Chemical Engineers, Seoul, Korea, 2012 Urban Dredged Silt nationallicence Organic Matter nationallicence Ethanol nationallicence Settling nationallicence Solidification nationallicence Chai Zhao-Hui Sewage Sludge and Silt Research Centre, State Key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan University, 430072, Wuhan, China aut Yang Guo-Lu Sewage Sludge and Silt Research Centre, State Key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan University, 430072, Wuhan, China aut Chen Meng Sewage Sludge and Silt Research Centre, State Key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan University, 430072, Wuhan, China aut Korean Journal of Chemical Engineering Springer US; http://www.springer-ny.com 30/1(2013-01-01), 105-110 0256-1115 30:1<105 2013 30 11814 https://doi.org/10.1007/s11814-012-0089-x text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11814-012-0089-x text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Chai Zhao-Hui Sewage Sludge and Silt Research Centre, State Key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan University, 430072, Wuhan, China aut NATIONALLICENCE 700 1- Yang Guo-Lu Sewage Sludge and Silt Research Centre, State Key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan University, 430072, Wuhan, China aut NATIONALLICENCE 700 1- Chen Meng Sewage Sludge and Silt Research Centre, State Key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan University, 430072, Wuhan, China aut NATIONALLICENCE 773 0- Korean Journal of Chemical Engineering Springer US; http://www.springer-ny.com 30/1(2013-01-01), 105-110 0256-1115 30:1<105 2013 30 11814 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer