Anaerobic digestion of heat treated sludge liquor by pilot scale mesophilic EGSB reactor  

作　　者：Zhao Jing Qiao Wei Wang Wei Gao Fang Xiao Zheng 

机构地区：[1]Biomass Engineering Center,College of Engineering,China Agricultural University,Beijing 100083,China [2]State R&D Center for Efficient Production and Comprehensive Utilization of Biobased Gaseous Fuels,Energy Authority,National Development and Reform Committee(BGFeuls),Beijing 100083,China [3]School of Environment,Tsinghua University,Beijing 100084,China [4]Center for Environmental Education and Communications of Ministry of Environmental Protection,Beijing 100029,China [5]Beijing Zhongyuan Chuangneng Engineering&Technology CO.,LTD,Beijing 100080,China

出　　处：《International Journal of Agricultural and Biological Engineering》2016年第3期146-153,共8页国际农业与生物工程学报（英文）

基　　金：the National Key Technology R&D Program of China(2014BAC24B01);Project‘China-Italy Cooperation on Food Waste Energy Utilization Project(SQ2013ZOA000017)’;The Beijing Municipal Science and Technology Plan(Z151100001115010;D161100006016003).

摘　　要：Biogas recovery from heat treated sludge liquor was tested by a 4 m^(3)mesophilic expanded granular sludge bed(EGSB)reactor within 206 days.Before pilot experiment,the heat pretreatment effects on hydrolysis and biogas production potential on three sludges from different wastewater plants were evaluated using bench test.One of these sludges was used in the subsequent pilot heat treatment and EGSB reactor.The biogas conversion potential of this sludge filtrate was 79%.Seeded with granular sludge,the EGSB reactor could be quickly activated and adapted to the new filtrate substrate.The EGSB influent COD was 20.0-35.0 g/L,and the effluent COD was lower than 10.0 g/L.The COD removal rate was 60%-70%at an organic loading rate(OLR)of 10.0 kg COD/(m^(3)·d).The fresh supernatant with low pH resulted in the high biogas production in EGSB.The effluent with high nitrogen and phosphor should be considered for further treatment.

关 键 词：anaerobic digestion SLUDGE BIOGAS heat treatment EGSB reactor pilot scale 

分 类 号：X70[环境科学与工程—环境工程]