动态膜生物反应器-混凝工艺处理草浆中段废水  

Treatment of Bleaching Effluent from Straw Pulping Line by Dynamic Membrane Bio-Reactor Combined with Coagulation Process

作　　者：张建[1] 邱宪锋[1] 高宝玉[1] 张成禄[1] 赵增文[2] 周旭[1] 

机构地区：[1]山东大学环境科学与工程学院,山东济南250100 [2]山东建筑大学,山东济南250100

出　　处：《中国造纸》2007年第6期8-11,共4页China Pulp & Paper

基　　金：山东省重大科技专项(2005QQ1106002);山东省优秀中青年科学家科研奖励基金(2004BS08009)。

摘　　要：采用动态膜生物反应器(DMBR)-混凝工艺对草浆造纸中段废水进行处理。结果表明,DMBR内的生物动态膜约在反应器运行60min后形成。在污泥浓度为10g/L、水力停留时间24h、进水CODCr1344mg/L、进水木素为390mg/L时,DMBR出水CODCr和木素分别平均为260mg/L和192mg/L。投加PAC对动态膜生物反应器出水进行混凝处理,当PAC用量为0.54g/L时,混凝处理出水的CODCr和木素平均为117mg/L和63mg/L。DMBR反冲洗后,反应器内生物动态膜的再生需要30min完成,稳定运行过程中DMBR的反冲洗周期能够稳定在29h以上。Dynamic membrane bio-reactor（DMBR） combined with coagulation process was adopted to treat bleaching effluent from straw pulping line, The results showed that dynamic membrane could be formed in 60 min. when MLSS was 10g/L, HRT was 24h, average COD and lignin concentration of influent were 1344mg/L and 390 mg/L respectively, the effluent average COD and lignin concentration of DMBR were 260 mg/L and 192 mg/L respectively. The effluent of DMBR was further treated by coagulation process; the average COD and lignin concentration of the effluent were 117mg/L and 63 mg/L respectively. When the addition of PAC was 0.54g/L, the dynamic membrane could be recovered in 30 min and the backwashing interval of the dynamic membrane bio-reactor could be longer than 29 h.

关 键 词：动态膜生物反应器 中段废水 混凝 

分 类 号：X793[环境科学与工程—环境工程]