A_2_O_MBR工艺处理受污染河水的试验研究.pdf

A2 / O MBR 廖日红 申颖洁 刘 操 黄赟芳 吴晓辉 战 楠 ( , 100048) 2 利用 A / O MBR( 平板式) 工艺进行北运河受污染河水净化试验研究, 结果表明, 进水 有机负荷的 变对系统内CODCr NH3 N 和T N 的去除影响很小, 回流比的增加使得 CODCr 和T N 的去除率提高约10%; 受污染河水中溶解性有机物多且可生化性较差的特性影响了系统出水水质和膜 污染速率, 系统对DOC 和UVA 的去除率分别为77. 3%和84. 3% , 对U V410 的平均去除率达到99% ; 随着运行时间的延长, 膜清洗周期逐渐缩短, 混合液过滤性能的变化致使膜过滤阻力逐渐增加 2 受污染河水 A / O 膜生物反应器( M BR) 溶解性有机物 2 Experimental i nvesti gati on on the A / O MBR process to treat the polluted river water Lia Rih ng, Shen Yingjie, Liu Ca , Huang Yunfang, Wu Xia hui, Zhan Nan (B eij ing Wat er Conser v ancy Science Research I nst it ut e, Beij ing 100048 , Ch ina) 2 2 Abstract: By c mbining the plate membrane bi react r w ith the A / O pr cess, the A / O MBR was c nstructed and used t treat p lluted river w ater. T he results sh w that the raising f reflux rati c uld make the r em val rates f CODCr and T N incr ease 10% , but the changing f rganic l ading had little effect n CODCr , NH3 N and TN rem val; b th the diss lved rganic matter accumulati n and its characteristics had influence n the treated w ater quality and membrane f uling rate; the rem val rates f DOC, U VA, and UV410 reached 77. 3%, 84. 3% and 99% separately; with the increase f the per ati n time, the membrane cleaning peri d keep decreasing and the membrane filtrati n r esistance increase gr adually due t the changing f the mixtur e liquid filtrati n characteristics. 2 Keywords: P lluted river w ater; A / O; M embrane bi react r; Diss lved r ganic matter