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细微泥沙对污水生化处理系统的影响及其归趋特性

Keywords: 污水处理,细微泥沙,活性污泥,MLVSS/MLSS比值,泥沙淤积

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Abstract:

大量运行数据表明,取消初沉池的污水厂泥沙淤积严重、污泥MLVSS/MLSS比值低,严重影响了污水厂的正常运行和功能提升。以取消初沉池后不能被有效去除的粒径≤200μm的细微泥沙为研究对象,通过对比实验的方法研究了不同粒径细微泥沙对污水生化处理系统的影响及其归趋特性。运行结果表明,当在污水中分别投加粒径为26、73、106、165和210μm的细微泥沙300mg/L时,运行40d后,生化系统活性污泥的MLVSS/MLSS比值将从启动初期的0.84分别下降至0.27、0.29、0.59、0.65和0.73,且随MLVSS/MLSS比值的下降,混合液SVI值也明显降低,反应器底部淤积泥沙量分别相当于进水泥沙总量的31.0%、47.4%、75.2%、75.9%和91.6%,表明小粒径颗粒更容易被活性污泥包裹,引起污泥MLVSS/MLSS下降,大粒径颗粒更容易淤积在反应器底部;由于泥沙淤积致使颗粒粒径越大,通过排放剩余污泥除砂的量越少,按照粒径递增的顺序,通过剩余污泥外排的除砂量分别相当于进水泥沙总量的44.5%、31.3%、20.3%、20.5%和7.2%。

References

[1]  古凌艳,张宏.改良A2/O工艺在南方雨季的工艺运行控制.中国给水排水,2006,22(16):84-86Gu L.Y., Zhang H. Operation and control of improved A2/O process used in rainy seasons of southern cities. China Water & Wastewter, 2006,22(16):84-86(in Chinese)
[2]  张波,高廷耀.初沉池取消后活性污泥法工艺的功能强化与局限性问题. 中国给水排水,1996,12(2):29-31
[3]  邵林广.城市污水处理中初沉池的设置.给水排水,2001,27(9):5-7 Shao L. G. On the primary sedimentation tank in urban WTP. Water & Wastewater Engineering,2001,27(9):5-7(in Chinese)
[4]  袁泉.城市污水厂初沉池的设置方式及运行效果.环境科学与管理,2008,33(1):126-128Yuan Q. The first clarifier of circulate result and establish a way inquiry into in WWTP. Environmental Science and Management,2008,33(1):126-128(in Chinese)
[5]  邬素艳,王秋生,肖世全.三沟式氧化沟内积泥问题的技术改造.中国给水排水,2003,19(6):64-65 Wu S.M.,Wang Q.S.,Xiao S.Q.Technical renovation for solution to sludge deposit in triple-channel oxidation ditch.China Water & Wastewater,2003,19(6):64-65(in Chinese)
[6]  出马迎霞,张全森,许爱红.改良型Carrousel氧化沟的运行与改造. 中国给水排水, 2007, 23(4):29-31Ma Y. X., Zhang Q. S., Xu A. H. Operation and reconstruction of improved carrousel oxidation ditch. China Water & Wastewter, 2007, 23(4):29-31(in Chinese)
[7]  卓珊慧,万魏.雨污合流污水处理厂的运行管理.绿色科技,2011,(7):195-196
[8]  吉芳英,晏鹏.山地城市排水管网特细颗粒物特性及变化规律.环境科学研究,2011,25(3):322-327Ji F. Y., Yan P. Characteristics and variation of superfine particles in a drainage pipe network of a mountainous city.Research of Environmental Sciences,2011,25(3):322-327(in Chinese)
[9]  张自杰. 排水工程(下册)(第4版).北京:中国建筑工业出版社, 2008
[10]  Ekama G.A., Wentzel M.C., Sotemann S.W.Tracking the inorganic suspended solids through biochemical treatment units of wastewater treatment plants. Water Research,2006, 40(19):3587-3595
[11]  Ekama G.A., Wentzel M.C. Modelling inorganic material in activated sludge systems. Water SA,2004, 30(2):153-174
[12]  Wentzel M.C., Ubisi M.F., Lakay M.T., et al. Incorporation of inorganic material in anoxic/aerobicactivated sludge system mixed liquor. Water Research,2002,36(20):5074-5082
[13]  张庆丰,张兴兴,王韬,等.西安市污水厂污泥脱水试验.环境科学与技术,2008,31(5):101-103Zhang Q.F., Zhang X.X., Wang T., et al. Experiment on sludge dewatering in a wastewater treatment plant. Environmental Science & Technology,2008,31(5):101-103(in Chinese)
[14]  沙超,段妮娜,董滨,等.热水解剩余污泥离心除沙试验研究.安徽农业科学, 2011,40(28):13976-13977Sha C., Duan N.N., Dong B., et al. Sand removal test by centrifuge of thermal hydrolysis sludge. Journal of Anhui Agri. Sci.,2011,40(28):13976-13977(in Chinese)
[15]  吴志超,黄友谊,陈和谦,等.沸石颗粒在污泥絮体中的形态及其对污泥泥水分离的影响.环境污染与防治, 2005, 27(3):177-180Wu Z. C., Huang Y. Y., Chen H. Q., et al. The chemical species present and their effects on zeolite granules in zeolite-activated sludge system. Environmental Pollution & Control, 2005, 27(3):177-180(in Chinese)
[16]  Chaignona V., Lartigesa B.S., Samrani A.El.,et al. Evolution of size distribution and transfer of mineral particles between flocs in activated sludges: An insight into floc exchange dynamics. Water Research, 2002,36(3):676-684

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