碱度对动态膜生物反应器处理效果的影响
|
摘要
采用动态膜生物反应器(DMBR)处理生活污水,考察不同进水碱度对DMBR处理效果的影响,研究反应器运行过程中运行参数的变化情况.结果表明:当碱度为25~510mg·L-1时,碱度对出水CODCr影响不大,去除率达到92.46%;进水碱度充足(224~510mg·L-1)时,出水NH+4-N去除率在98%以上;当进水碱度不足时,NH+4-N去除率下降,DMBR出水pH值的变化滞后于碱度的变化;当碱度在330~510mg·L-1范围内时,动态膜通量约为23L·(m2·h)-1,DMBR的运行周期可达39d,反冲洗后膜通量恢复率为100%.反应器内的胞外聚合物随着进水碱度的下降而升高,DMBR反冲洗周期缩短,膜污染趋势加重,当进水碱度下降到130mg·L-1时,反冲洗周期下降到10d.
Dynamic membrane bioreactor(DMBR)was used to treat domestic sewage.The effect of the influent alkalinity concentration on the DMBR treatment results was investigated,and the parameters of the reactor were tested at the same time.The results showed that,when alkalinity was 25-510mg·L-1,there was little effect on the CODCrof the effluent,and the removal efficiency reached 92.46%.When the alkalinity was sufficient,which was 224-510mg·L-1,the ammonia nitrogen removal rate was over 98%;while the alkalinity was insufficient,the ammonia nitrogen removal rate decreased and the effect of pH on the influent of DMBR was lagged behind the alkalinity.When the alkalinity was 330-510mg·L-1,the flux of the dynamic membrane could reach 23L·(m2·h)-1 with the cycle of operation about 39 d,and the recovery of the membrane flux was 100%.The extracellular polymeric substances increased with the decrease of the influent alkalinity,which made the inverses washing cycle shorten and the membrane pollution severe.The inverses washing cycle reduced to 10 dwhen the alkalinity of influent was 130mg·L-1.
Dynamic membrane bioreactor(DMBR)was used to treat domestic sewage.The effect of the influent alkalinity concentration on the DMBR treatment results was investigated,and the parameters of the reactor were tested at the same time.The results showed that,when alkalinity was 25-510mg·L-1,there was little effect on the CODCrof the effluent,and the removal efficiency reached 92.46%.When the alkalinity was sufficient,which was 224-510mg·L-1,the ammonia nitrogen removal rate was over 98%;while the alkalinity was insufficient,the ammonia nitrogen removal rate decreased and the effect of pH on the influent of DMBR was lagged behind the alkalinity.When the alkalinity was 330-510mg·L-1,the flux of the dynamic membrane could reach 23L·(m2·h)-1 with the cycle of operation about 39 d,and the recovery of the membrane flux was 100%.The extracellular polymeric substances increased with the decrease of the influent alkalinity,which made the inverses washing cycle shorten and the membrane pollution severe.The inverses washing cycle reduced to 10 dwhen the alkalinity of influent was 130mg·L-1.
引文
[1]OSKAR M,KENSUKE F,KORNEEL R,et al.Redistribution of wastewater alkalinity with a microbial fuel cell to support nitrification of reject water[J].Water Research,2011,45(8):2691-2699.
[2]HOU Bao-lin,HAN Hong-jun,JIA Sheng-yong,et al.Effect of alkalinity on nitrite accumulation in treatment of coal chemical industry wastewater using moving bed biofilm reactor[J].Journal of Environmental Sciences,2014,26(5):1014-1022.
[3]陈丽丽,刘宏远.膜生物反应器在中国的研究进展[J].山西建筑,2010,36(18):164-165.
[4]洪俊明,尹娟.颗粒活性炭对膜生物反应器脱氮性能的影响[J].中国环境科学,2012,32(1):75-80.
[5]卢芳芳,洪俊明,尹娟,等.盐度对DMBR处理养殖废水脱氮效能的影响[J].华侨大学学报:自然科学版,2012,33(3):300-303.
[6]张建,邱宪锋,高宝玉,等.动态膜生物反应器中动态膜的作用和结构研究[J].环境科学,2007,28(1):147-151.
[7]杨志水,姜斌.城镇生活污水中氨氮的去除研究[J].环境工程,2010,28(S1):147-149,156.
[8]张海丰,孙宝盛,王亮,等.贫营养条件下膜生物反应器污泥混合液可滤性分析[J].中国环境科学,2009,29(4):368-373.
[9]BRADFPRD M M.A rapid and sensitive method for the quantitation of microgram quantities of protein utilizing the principle of protein-dye binding[J].Analytical Biochemistry,1976,72(1/2):248-254.
[10]DUBOIS M,GILLES K A,HAMILTON J K,et al.Calorimetric method of determination of sugars and related substances[J].Analytical Biochemistry,1951,28(3):350-356.
[11]YANG Li,LAI Ching-ting,SHIEH W K.Biodegrdation of dispersed diesel-fuel under high salinity condition[J].Water Research,2000,34(13):3303-3314.
[12]丁国际,刘德永,郑广宏,等.新型一体化工艺处理生活污水的影响因素研究[J].中北大学学报:自然科学版,2012,33(4):443-452.
[13]玄婉茹,单明军,郑春芳,等.pH值和碱度对生物硝化的影响[J].染料与化工,2012,43(3):36-38.
[14]张自杰.排水工程[M].北京:中国建筑工业出版社,2000:309-311.
[15]陈英文,赵冰怡,刘明庆,等.碱度指示MBR中同步硝化反硝化的研究[J].环境工程学报,2010,4(2):273-277.
[16]ZHANG Bin,SUN Bao-sheng,JIN Min,et al.Extraction and analysis of extracellular polymeric substances in membrane fouling in submerged MBR[J].Desalination,2008,227(1/2/3):286-294.
[17]刘阳,张捍民,杨凤林.活性污泥中微生物胞外聚合物(EPS)影响膜污染机理研究[J].高校化学工程学报,2008,22(2):332-338.
[18]朱哲,李涛,王东升,等.pH对活性污泥表面特性和形态结构的影响[J].环境工程学报,2008,2(12):1599-1604.
[2]HOU Bao-lin,HAN Hong-jun,JIA Sheng-yong,et al.Effect of alkalinity on nitrite accumulation in treatment of coal chemical industry wastewater using moving bed biofilm reactor[J].Journal of Environmental Sciences,2014,26(5):1014-1022.
[3]陈丽丽,刘宏远.膜生物反应器在中国的研究进展[J].山西建筑,2010,36(18):164-165.
[4]洪俊明,尹娟.颗粒活性炭对膜生物反应器脱氮性能的影响[J].中国环境科学,2012,32(1):75-80.
[5]卢芳芳,洪俊明,尹娟,等.盐度对DMBR处理养殖废水脱氮效能的影响[J].华侨大学学报:自然科学版,2012,33(3):300-303.
[6]张建,邱宪锋,高宝玉,等.动态膜生物反应器中动态膜的作用和结构研究[J].环境科学,2007,28(1):147-151.
[7]杨志水,姜斌.城镇生活污水中氨氮的去除研究[J].环境工程,2010,28(S1):147-149,156.
[8]张海丰,孙宝盛,王亮,等.贫营养条件下膜生物反应器污泥混合液可滤性分析[J].中国环境科学,2009,29(4):368-373.
[9]BRADFPRD M M.A rapid and sensitive method for the quantitation of microgram quantities of protein utilizing the principle of protein-dye binding[J].Analytical Biochemistry,1976,72(1/2):248-254.
[10]DUBOIS M,GILLES K A,HAMILTON J K,et al.Calorimetric method of determination of sugars and related substances[J].Analytical Biochemistry,1951,28(3):350-356.
[11]YANG Li,LAI Ching-ting,SHIEH W K.Biodegrdation of dispersed diesel-fuel under high salinity condition[J].Water Research,2000,34(13):3303-3314.
[12]丁国际,刘德永,郑广宏,等.新型一体化工艺处理生活污水的影响因素研究[J].中北大学学报:自然科学版,2012,33(4):443-452.
[13]玄婉茹,单明军,郑春芳,等.pH值和碱度对生物硝化的影响[J].染料与化工,2012,43(3):36-38.
[14]张自杰.排水工程[M].北京:中国建筑工业出版社,2000:309-311.
[15]陈英文,赵冰怡,刘明庆,等.碱度指示MBR中同步硝化反硝化的研究[J].环境工程学报,2010,4(2):273-277.
[16]ZHANG Bin,SUN Bao-sheng,JIN Min,et al.Extraction and analysis of extracellular polymeric substances in membrane fouling in submerged MBR[J].Desalination,2008,227(1/2/3):286-294.
[17]刘阳,张捍民,杨凤林.活性污泥中微生物胞外聚合物(EPS)影响膜污染机理研究[J].高校化学工程学报,2008,22(2):332-338.
[18]朱哲,李涛,王东升,等.pH对活性污泥表面特性和形态结构的影响[J].环境工程学报,2008,2(12):1599-1604.