二级牡蛎壳固定床-MBR工艺深度处理尾水研究
|
摘要
利用臭氧的强氧化、微生物降解以及MBR的强截留作用,构建了二级牡蛎壳固定床,即OOFR(臭氧-牡蛎壳固定床)-AOFB(曝气-牡蛎壳生物固定床)-MBR深度处理污水厂尾水工艺流程。为期90 d的小试结果表明,该工艺可高效地去除尾水中的C、N、P以及悬浮物。臭氧边界投加量为40~110 mg/L,在臭氧最佳投加量90 mg/L下,系统的COD、NH4+-N、TP的平均去除率分别达83%、99%、65%,平均出水COD、NH4+-N、TP分别为6、0.1、0.14 mg/L,浊度低于0.1 NTU,p H为7.4~7.8,完全满足反渗透处理进水的要求。
By utilizing the strong oxidation of ozone,degradation of microbes and strong interception of MBR,the technological flow of the two-stage oyster shells fix-bed OOFR-AOFB-MBR system is established for the advanced treatment of tail water in wastewater treatment plants. The results from a 90 d bench scale experiment show that this process can effectively remove C,N,P and suspended solids from tail water. The boundary dosage of ozone is 40-110mg/L,and when the optimum ozone dosage concentration in ozone oyster shells fix-bed reactor is about 90 mg/L. the removing rates of system COD,NH4+-N and TP are 83%,99% and 65%,respectively,the average effluent COD,NH4+-N and TP are 6,0.1,0.14 mg/L,respectively,the turbidity is lower than 0.1 NTU,and p H is 7.4-7.8,meeting completely the requirements for reverse osmosis to treat influent.
By utilizing the strong oxidation of ozone,degradation of microbes and strong interception of MBR,the technological flow of the two-stage oyster shells fix-bed OOFR-AOFB-MBR system is established for the advanced treatment of tail water in wastewater treatment plants. The results from a 90 d bench scale experiment show that this process can effectively remove C,N,P and suspended solids from tail water. The boundary dosage of ozone is 40-110mg/L,and when the optimum ozone dosage concentration in ozone oyster shells fix-bed reactor is about 90 mg/L. the removing rates of system COD,NH4+-N and TP are 83%,99% and 65%,respectively,the average effluent COD,NH4+-N and TP are 6,0.1,0.14 mg/L,respectively,the turbidity is lower than 0.1 NTU,and p H is 7.4-7.8,meeting completely the requirements for reverse osmosis to treat influent.
引文
[1]刘世念,胡勇有,阎佳,等.多介质过滤-活性炭过滤-MBR工艺深度处理城市中水回用火电厂工业用水研究[J].水处理技术,2015(3):68-70.
[2]Zhou X J,Guo W Q,Yang S S,et al.Ultrasonic-assisted ozone oxidation process of triphenylmethane dye degradation:Evidence for the promotion effects of ultrasonic on malachite green decolorization and degradation mechanism[J].Bioresource Technology,2013,128(1):827-830.
[3]Tripathi S,Pathak V,Tripathi D M,et al.Application of ozone based treatments of secondary effluents[J].Bioresource Technology,2011,102(3):2481-2486.
[4]肖亦,钟飞,潘献晓.固定化微生物技术在废水处理中的应用研究进展[J].环境科学与管理,2009,34(6):82-84.
[5]Shih P K,Chang W L.The effect of water purification by oyster shell contact bed[J].Ecological Engineering,2015,77:382-390.
[6]Li C,Cabassud C,Reboul B,et al.Effects of pharmaceutical micropollutants on the membrane fouling of a submerged MBR treating municipal wastewater:Case of continuous pollution by carbamazepine[J].Water Research,2015,69:183-194.
[7]国家环境保护总局.水和废水监测分析方法[M].4版.北京:中国环境科学出版社,2002:216-281.
[2]Zhou X J,Guo W Q,Yang S S,et al.Ultrasonic-assisted ozone oxidation process of triphenylmethane dye degradation:Evidence for the promotion effects of ultrasonic on malachite green decolorization and degradation mechanism[J].Bioresource Technology,2013,128(1):827-830.
[3]Tripathi S,Pathak V,Tripathi D M,et al.Application of ozone based treatments of secondary effluents[J].Bioresource Technology,2011,102(3):2481-2486.
[4]肖亦,钟飞,潘献晓.固定化微生物技术在废水处理中的应用研究进展[J].环境科学与管理,2009,34(6):82-84.
[5]Shih P K,Chang W L.The effect of water purification by oyster shell contact bed[J].Ecological Engineering,2015,77:382-390.
[6]Li C,Cabassud C,Reboul B,et al.Effects of pharmaceutical micropollutants on the membrane fouling of a submerged MBR treating municipal wastewater:Case of continuous pollution by carbamazepine[J].Water Research,2015,69:183-194.
[7]国家环境保护总局.水和废水监测分析方法[M].4版.北京:中国环境科学出版社,2002:216-281.