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《Environmental Science & Technology》 2017-01
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Study on Purification of Steam from Sludge Thermal Drying by Adsorption of Activated Carbon

SUN Shaoling;SHENG Yanqing;SUN Qiyao;ZHENG Meng;LI Zhaoran;SUN Xiangyu;Research Center for Coastal Environment Engineering Technology of Shandong Province, Yantai Institute of Coastal Zone Research;University of Chinese Academy of Sciences;  
Relating to the steam generated from the sludge thermal drying process,which was treated by activated carbon adsorption,thus removing COD and NH_3 in the condensation water,this paper described the experimental study focusing on COD and NH_3-N removal as well as the influence of polyacrylamide(PAM) that had been added into sludge during the dewatering process on NH_3-N concentration in condensation water.Results of the experiments showed that addition of PAM made merely 3%contribution to NH_3-N concentration of condensation water,while the COD removal efficiency in condensation water was notable—as the dosage of activated carbon was 30 g/L,COD concentration was less than 50 mg/L(removal rate:98%),in compliance with Class 1 of the relevant state Wastewater Discharge Standard(GB 8978-1996),while the dosage of activated carbon added to 45 g/L,the removal rate of NH_3-N in condensed water would be more than 70%.
【Fund】: 国家自然科学基金项目(41373100):中国科学院关键技术人才项目
【CateGory Index】: X703.1
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