热水解对缺氧/好氧膜生物反应器同步处理污水及污泥减量的影响研究  

Study on the influence of thermal hydrolysis on simultaneous sewage treatment and sludge reduction in AOMBR process

作　　者：周玲雪 刘宏远[1] 徐灵慧 刘惠敏[1] 

机构地区：[1]浙江工业大学建筑工程学院,浙江杭州310014 [2]浙江中南建设集团有限公司设计分公司,浙江杭州310052

出　　处：《环境污染与防治》2014年第4期49-53,59,共6页Environmental Pollution & Control

基　　金：浙江省重点科技创新团队基金资助项目(No.2010R50037)

摘　　要：研究了剩余污泥热水解后的回流对缺氧/好氧膜生物反应器(AOMBR)同步处理污水及污泥减量的影响。试验通过与常规AOMBR工艺对比,考察了污泥热水解回流量对系统污泥浓度、污泥产率、出水水质的影响。试验结果表明,当热水解污泥回流量分别为剩余污泥量的100%、75%、50%时,热水解会一定程度提高系统的污泥浓度,但污泥总量却分别削减了20.2%、21.2%和13.1%,系统污泥产率分别下降了46%、54%和33%,剩余污泥排放量分别削减了100%、75%、50%。两套工艺的平均出水COD、NH+4-N、TN分别在40、3、5mg/L以下,均能达到《城镇污水处理厂污染物排放标准》(GB 18918—2002)的一级A排放标准。因此,热水解污泥的回流并不会对系统的出水水质产生明显影响,同时能够显著削减污泥总量。The anoxic/aerobic membrane bioreactor （AOMBR）was modified by refluxing of thermal hydrolyzed sludge for simultaneous sewage treatment and sludge reduction. Compared with conventional AOMBR process, the back flow rate of thermal hydrolyzed sludge on sludge concentration,sludge yield and effluent quality was investiga ted. The results indicated that when the back flow rate of thermal hydrolyzed sludge were 100%,75 % and 50 %, re- spectively, thermal hydrolysis could increase the sludge concentration to a certain extent, whereas the total sludge vol ume was cut down by 20. 2% ,21.2% and 13.1% ,respectively,the sludge yield was reduced 46% ,54% and 33% re spectively9 and the amount of excess sludge discharge were reduced by 100 %, 75 %, 50 %/%0 separately. Meanwhile, the average effluent COD,NH＋-N, TN of two processes were under 40,3,5 mg/L respectively, and the effluent water quality could meet the level A of class 1 in the discharge standard of pollutants for municipal wastewater treatment plant （ GB 18918-2002）. Consequently,the effluent quality was not affected obviously by the reflux of thermal hydro- lyzed sludge,and the sludge volume was/＇educed obviously .

关 键 词：热水解 污泥减量 缺氧 好氧膜生物反应器 

分 类 号：X703[环境科学与工程—环境工程]