Ezperimental Study on the Treatment of Molasses Distillery Wastewater Using Micro-aerobic Biological Treatment Process

摘要：

Molasses distillery wastewater is very hardly difficult to be treated due to its high CODcr, high sulfate concentration and complicated composition. this work, the micro-aerobic biological treatment process was used and the optimum selection of oxidation-reduction potential (ORP), reflux ratio, and hydraulic retention time (HRT) was carried out. The results showed that the removal rates of CODcr and sulfate were 69.85% and 68.56% under the optimum operating condition (35 ℃, ORP=-400 mV, reflux ratio=100%, HRT=12 h). The sulfide concentration of the effluent was less than 15.0 mg·L-1, sulfur concentration of the effluent 150.0 mg·L-1, the elemental sulfur generation rate 48.16% when the CODcr concentration and sulfate concentration in influent were 7786.1 mg·L-1 and 934.9 mg·L-1 respectively.

关键词： micro-aerobic technology molasses distillery wastewater ORP refluz ratio HRT

作者: YOU Shaohong XIE Qinglin MA Lili LI Yawei LI Yanhong JI Hongda

作者单位: Department of Resources and Environmental Engineering,Guilin University of Technology,Guilin 541004, Hezhou University,Hezhou 542800,Guangxi,China

会议类型: 国际会议

会议名称: 2009 International Symposium on Environmental Science and Technology(2009环境科学与技术国际会议)

会议地点: 上海

会议语种:英文

页码: 1646-1649

在线出版日期: 2009-06-02（万方平台首次上网日期，不代表论文的发表时间）