农业工程学报2012，Vol.28Issue(4)：208-214,7.DOI:10.3969/j.issn.1002-6819.2012.04.035
鲜水葫芦与其汁液厌氧发酵产沼气效率比较
Comparison of biogas production efficiency of anaerobic digestion using water hyacinth and its juice from solid-liquid separation as feedstock
摘要
Abstract
To exploit efficient technology of anaerobic digestion with water hyacinth, a laboratory experiment was carried out to assess the performance of water hyacinth and its juice from solid-liquid separation as feedstock in two continuous stirred-tank reactors (CSTR) at 35°C. Results showed that when using water hyacinth as feedstock for anaerobic digestion, the suitable organic loading rate (OLR) were 2.0 kg/(m3d) with 27 d hydraulic retention time (HRT), and the relevant biogas production rate of volatile solid and the volume biogas yield were achieved at 267 mL/g and 0.61 m3/(m3-d) with 58% average methane content, respectively. Comparatively, using the juice of water hyacinth as feedstock for anaerobic digestion, the biogas production rate of chemical oxygen demand (COD) and OLR were 6 kg/(m3d) and 1.4 m3/(m3d), respectively, in which average methane content was 66%. Meanwhile, its HRT was reduced to 2.4 d. The reduction of COD and mixed liquor volatile suspended solids (MLVSS) were over 85% and 88%, respectively. Therefore, the juice of water hyacinth as feedstock for anaerobic digestion had higher utilization efficiency compared with water hyacinth itself, and consequently a new method for utilization of water hyacinth with less investment could be exploited.关键词
沼气/厌氧发酵/效率/水葫芦/固液分离/水葫芦汁/完全搅拌混合式反应器(CSTR)Key words
biogas/ anaerobic digestion/ efficiency/ water hyacinth/ solid-liquid separation/ juice of water hyacinth/ continuous stirred - tank reactors(CSTR)分类
资源环境引用本文复制引用
叶小梅,常志州,钱玉婷,朱萍,杜静..鲜水葫芦与其汁液厌氧发酵产沼气效率比较[J].农业工程学报,2012,28(4):208-214,7.基金项目
国家支撑计划(2009BAC63B02):江苏省农业自主创新项目(CX1077602):云南省社会事业发展专项(2009CA034) （2009BAC63B02）
