糖类在城市污水生物处理系统中的去除机理  

Removal kinetics model of sugars in municipal wastewater treatment plants of activated sludge

作　　者：黄满红[1,2] 李咏梅[2] 顾国维[2] 

机构地区：[1]东华大学环境科学与工程学院,上海201620 [2]同济大学环境科学与工程学院国家污染控制与资源化重点实验室,上海20092

出　　处：《生态环境》2008年第6期2163-2167,共5页Ecology and Environmnet

基　　金：国家自然科学基金项目(50138010;50578114);东华大学校基金项目(No.113-10-0044018);东华大学环境科学与工程学院重点学科建设开放课题基金项目;溢达基金项目(DERC)(No.R005-06)

摘　　要：研究了厌氧、缺氧和好氧状态下淀粉在城市污水生物处理系统中水相和泥相中吸附和降解的动力学参数,建立了淀粉在厌氧、缺氧、好氧状态下的降解动力学模型,并对模型预测的结果进行了验证。结果表明,Fritz-Schlunder模型可以较好地描述糖类在厌氧、缺氧和好氧污泥上的吸附过程,吸附的大分子糖类迅速水解为低一级的高分子物质和小分子物质;厌氧降解速率系数K厌、缺氧的降解速率系数K缺与好氧的降解速率常数的比值分别为0.40和0.64;所建立的动力学模型能较好的预测出水糖类的浓度(相对误差<10%)。The adsorption isotherms and the degradation kinetics of starches by the sludge under anaerobic, anoxic and aerobic conditions were separately determined. The degradation models under anaerobic, anoxic and aerobic conditions of starches were constructed and parameters of these models were calibrated by the experimental data obtained from the performance of A/A/O system. The results showed that the adsorption of starches onto the three kinds of sludge could be adequately described by Fritz-Schlunder model. The starches that adsorbed onto sludge can hydrolyzed into lower molecular weight matters. The ratios of starches degradation rate under anaerobic and anoxic conditions to that under oxic conditions were 0.4 and 0.64, respectively, indicating that starches was effectively degraded under anaerobic and anoxic conditions. The model was useful in forecasting the effluent quality of anaerobic, anoxic and oxic tanks in the AAO system, and the relative error is less than 10%.

关 键 词：糖类 城市污水处理 吸附 去除 

分 类 号：X703[环境科学与工程—环境工程]