《活性污泥生枝状菌胶团的形成及降解机理_孔秀琴》由会员分享，可在线阅读，更多相关《活性污泥生枝状菌胶团的形成及降解机理_孔秀琴（4页珍藏版）》请在金锄头文库上搜索。
1、29null102007M10武null 汉null 理null 工 null 大null 学null 学null 报JOURNAL OF WUHAN UNIVERSITY OF TECHNOLOGYVol.29null No.10null Oct. 2007C3)v#孔秀琴1,马 null 宁2( 1.vF,730050; 2.g,710054)Knull1: null 在利用生活污水直接曝气培养活性污泥的过程中,产生了生枝状动胶菌团,其枝状体伸出活性污泥絮体外扩展生长,显著提高了污水COD去除率b通过显微分析,表明生枝状菌胶团对活性污泥絮凝沉降具有促进作用;其生长点在枝状体的顶端,动胶菌呈
2、null纵向连接null,因此形成枝状菌胶团;该菌胶团的形成需要较长的泥龄:约25 d,其出现时曝气池内溶解氧维持较高水平: 3. 2null 4.8 mg/ L;该菌胶团所适宜的有机负荷为: 0.17null 0.37 kgCOD/ kgMLSSnulld;枝状菌胶团对水质及冲击负荷的耐受力较强,不易发生污泥膨胀,它的存在可增强受损活性污泥的可逆转性b1oM: null 活性污泥; null 枝状菌胶团; null 培养试验ms|: null X 703. 3DS: null AcI|: 1671null4431(2007)10null0047null04Principle of Growt
3、hing andDecomposing About Branched Zoogloeain Activated SludgeKON G Xiunullqin1, MA Ning2( 1. School of Petrochemical Engineering, Lanzhou University of Technology, Lanzhou 730050, China;2.Xinull an Environment Protect Graduate,Xinull an 710054, China)Abstract: null During the process of cultivating
4、 activated sludge by using domestic sewage with direct aerating way, branchedzoogloea appeared, whose branchednullbody stretched out from activated sludge flocand extended and grew. It was improved theclearancing ratioof COD obviously. Branched zooloeashowed thespeedupto sedimentation velocityof act
5、ivated sludgeby micronullscop analysis.Thegrowthy point of Branchedzoogloeawas on thetop of branchednullbody. It was longitudinal growth,soit formedbranchednullbody. Theforming of branchednullbody demanded thelonger sludge age:about 25 d. When it cameinto being. Themoredissolved oxygen in the aerati
6、ng pool was kept on; The proper organic loading about Branched zoogloea was 0. 17null 0. 37 kgnullCOD/ (kgMLSSnulld); Branched zoogloea possessed stronger tolerance for water quality and shock loading,which has not broughtactivesludgebulking. Branched zoogloea can enhance the reversibility of injure
7、d activated sludge.Key words: null activated sludge; null branched zoogloea; null cultivated experimentl:2007null06null09.:8OS( 0503null06)81S( 3ZS042nullB25null006).Te:dV( 1967null) ,o,q. Enullmail: kongxq )vC31Fs,bQ,)vi,P?3sCVIMbV1,3(0.20 kgCOD/kgMLSSnulld)/,C?3s,CvY3L(m11),)rTM, CODq47%bNH)vi,#H0
8、. 07 kgCOD/kgMLSSnulldH,2null 3=,C8,CODq667%b)vi,PCHW=by,)vZ3,1Vv,?%ZC88l!,/3;H,)vG,=)T,Vs3#SbyN,)v#0sb3 nullnull3!CV,33)v,8%C8Z3,OBTb38,)null:_null,yN)vb)v1C-25 d,CH=3. 2null 4.8 mg/L,aR0.17null 0.37 kgCOD/kgMLSSnulldb)v#0s,?3CnbiV9sCVIbID 1 null,C-.l) M.:, 2000. 2 nullfZV,f6.WuTCE)3LJ.W:v(1S), 200
9、2, 18(2): 201null204. 3 null),t.3m M.:, 2005. 4 null,nullk.C3+TJ.,2001, 27(4):24null27. 5 null,null.iTSBREVQHWeJ.SS,1998,18( 5) :415null418. 6 null James L Barnard, MeiringP G J. Dissolved Oxygen Control in theActivated SludgeProcess J. Wat Sci Tech, 1989, 20(4,5):93null97.50null null null null null null null null null null null null null null null null null nullnullqnullnullnullvnullnullnullnull null null null null null null null null null null null null null 2007M10
