title: Simulation of water removal process and optimization of aeration strategy in sewage sludge composting.
abstract: Reducing moisture in sewage sludge is one of the main goals of sewage sludge composting and biodrying. A mathematical model was used to simulate the performance of water removal under different aeration strategies. Additionally, the correlations between temperature, moisture content (MC), volatile solids (VS), oxygen content (OC), and ambient air temperature and aeration strategies were predicted. The mathematical model was verified based on coefficients of correlation between the measured and predicted results of over 0.80 for OC, MC, and VS, and 0.72 for temperature. The results of the simulation showed that water reduction was enhanced when the average aeration rate (AR) increased to 15.37 m(3) min(-1) (6/34 min/min, AR: 102.46 m(3) min(-1)), above which no further increase was observed. Furthermore, more water was removed under a higher on/off time of 7/33 (min/min, AR: 87.34 m(3) min(-1)), and when ambient air temperature was higher.
authors.affiliation: Center for Environmental Remediation, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, 11A Datun Road, Beijing 100101, PR China.
authors.forename: Hai-Bin
authors.initials: HB
authors.lastname: Zhou
authors.affiliation: Center for Environmental Remediation, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, 11A Datun Road, Beijing 100101, PR China.
authors.forename: Tong-Bin
authors.initials: TB
authors.lastname: Chen
authors.affiliation: Center for Environmental Remediation, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, 11A Datun Road, Beijing 100101, PR China. Electronic address: gaod@igsnrr.ac.cn.
authors.forename: Ding
authors.initials: D
authors.lastname: Gao
authors.affiliation: Center for Environmental Remediation, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, 11A Datun Road, Beijing 100101, PR China.
authors.forename: Guo-Di
authors.initials: GD
authors.lastname: Zheng
authors.affiliation: Center for Environmental Remediation, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, 11A Datun Road, Beijing 100101, PR China.
authors.forename: Jun
authors.initials: J
authors.lastname: Chen
authors.affiliation: Center for Environmental Remediation, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, 11A Datun Road, Beijing 100101, PR China.
authors.forename: Tian-Hao
authors.initials: TH
authors.lastname: Pan
authors.affiliation: Center for Environmental Remediation, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, 11A Datun Road, Beijing 100101, PR China.
authors.forename: Hong-Tao
authors.initials: HT
authors.lastname: Liu
authors.affiliation: Center for Environmental Remediation, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, 11A Datun Road, Beijing 100101, PR China.
authors.forename: Run-Yao
authors.initials: RY
authors.lastname: Gu
mesh_terms: D000388:Air; D003890:Desiccation / Q000379:methods*; D007700:Kinetics; D008962:Models, Theoretical; D012722:Sewage / Q000737:chemistry*; D012987:Soil; D013696:Temperature; D013997:Time Factors
chemical_list: D012722:Sewage; D012987:Soil
keywords: Aeration strategy; Mathematical model; Sewage sludge; Water removal