70℃高温水解/厌氧/好氧/BAC工艺处理高浓度有机废水  

Extreme Thermophilic(70℃),Combining Two-Phase Anaerobic/Activated Sludge/Bio-Activated Charcoal for Treating Food Wastewater

作　　者：于宏兵[1] 黄涛[1] 林学钰[1] 吴睿[1] 

机构地区：[1]吉林大学水资源与环境研究所

出　　处：《环境科学》2005年第6期110-114,共5页Environmental Science

基　　金：国家科技攻关专题项目(2003BA614A-10-01)

摘　　要：采用70℃高温水解酸化、高温厌氧、高温好氧、高温生物活性碳(BAC)组合工艺,对玉米深加工行业的高温工艺废水进行分相与分段处理研究,分别对COD、VFA、氨基酸等的去除处理效果进行研究和评价,在高温条件下完成高温高浓度有机废水的处理并达到回用热水、节能目的.结果表明:组合工艺系统对高浓度有机废水COD总去除率达到99.62%,VFA和氨基酸均为100%,出水COD＜50mg/L,达到中水回用COD标准值,其中水解酸化相COD去除率占总去除率的49.7%,产甲烷相占33.7%,好氧段占14.5%,BAC段占1.1%;厌氧段占VFA总去除的56%,好氧段为21.2%,BAC段为21.8%;厌氧段占氨基酸总去除的34.8%,好氧段占62%,BAC段占3%.其中水解酸化有机负荷达到36.2kg/(m3·d).高温好氧和BAC组合工艺进水COD 3 500mg/L条件下,COD去除率仍能达到95.8%.整个系统运行平稳,抗冲负荷强,各段出水pH均在6.6～7.5之间波动.This study was conducted to investigate the performance of combining two-phase anaerobic （TPA）/activated sludge（AS） / bid-activated charcoal（BAC）, seeded with mesophilic sludge, for treating food wastewater at extreme temperature（70℃ ） to allow treated water to be reused for closed heat water circuits. The system had a total hydraulic retention time of 42h. Reactor performance was characterized by COD,VFA,pH, amino-acid. An overall COD treatment efficiency of 99.62% , VFA and amino-acide of 100% and pH between 6.6- 7.5 were observed for the system. COD removal of acidification phase, methane phase, activated sludge and BAC was 49.7 % ,33.7 %, 14.5 %, and 1.1% , respectively. VFA removal of methane phase, activated sludge and BAC was 56 %, 21.2% and 21.8% , respectively. Amino-acid removal of methane phase, activated sludge and BAC was 34.8% , 62% and 3% , respectively.COD concentration of effluent in the system was lower than 50mg/L. An additional experiments show that activated sludge and bid-activated charcoal at 70℃ may allow COD concentration of influent up to 3 500mg/L and COD removal was up to 95.8 % at high organic loading 4.5kg/（m^3· d） with aerobic condition.

关 键 词：高温(70℃) 两相厌氧 好氧 BAC 

分 类 号：X703.1[环境科学与工程—环境工程] X792