温度对复合厌氧折流板膜生物反应器处理生活污水效能的影响  

Effect of temperature on complex anaerobic baffled membrane reactor for domestic sewage treatment

作　　者：刘捷[1] 陆爽君 吴鹏[2] 沈耀良[1] 

机构地区：[1]苏州科技学院江苏省环境科学与工程重点实验室,苏州215009 [2]江南大学环境与土木工程学院,无锡214122

出　　处：《环境工程学报》2014年第2期553-558,共6页Chinese Journal of Environmental Engineering

基　　金：江苏省高校自然科学研究重大项目(12KJA610002)

摘　　要：将新型CAMBR反应器（厌氧折流板反应器（ABR）与膜生物反应器（MBR）优化组合）用于处理生活污水，研究温度对该反应器处理效能的影响。实验水力停留时间7．5h，混合液回流比设置为200％，pH值为6．5～8．5，溶解氧3mg／L左右。控制3个温度梯度：高温（32～37％），中温（20～25℃），低温（5～10％），每个温度运行35d。结果表明，在高温条件下，系统出水COD、NH4．N、TN和TP平均浓度分别为25、0．5、12．5和0．7mg／L。在中温条件下，系统出水COD、NH4＋-N、TN和TP浓度分别30、1．2、12．5和0．4mg／L。在低温条件下，COD和TP分别经过15d和20d调整适应，出水可恢复至35mg／L和1mg／L。由于低温（10％以下）对硝化细菌产生强烈抑制，出水NH4＋-N去除率最终稳定在35％，TN去除率为40％。低温条件下，该反应器应用于污水处理中需注意适当保温，以保证出水水质。The effect of temperature on CAMBR（combined ABR and MBR）for domestic sewage treatment was investigated. The operational conditions of HRT, recycle ratio, pH and DO were 7.5 h, 150% , 6.5 ℃8.5 and 3 mg/L, respectively. Three temperature gradients were controlled： high temperature （32 - 37℃ ） , temper- ature （20 -25℃ ）, low temperature （5 - 10℃）. Each temperature operated for 35 days. The results show that the average effluent concentration of COD, NH4 -N, TN and TP were 25, 0.5, 12.5 and 0.7 mg/L at high tem- perature, respectively. The effluent of COD, NH4-N, TN and TP were 30, 1.2, 12.5 and 0.4 mg/L at medi- um temperature, respectively. At low temperature, the effluent concentration of COD and TP recovered to 35 mg/L and 1 mg/L after 15 d and 20 d, respectively. Nitrifying bacteria were inhibited strongly at low tempera- ture （10℃） , NH4-N removal rate was only 35% and TN removal rate was 40%. So, the CAMBR should be kept warm to ensure good effluent quality at low temperature.

关 键 词：厌氧折流板反应器 膜生物反应器 生活污水 温度 

分 类 号：X703[环境科学与工程—环境工程]