基于磷酸盐还原工艺的解体污泥活性恢复研究
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摘要
目的探究导致磷酸盐还原污泥解体的原因和恢复方法,为进一步研究磷酸盐还原污泥的特性及系统恢复提供借鉴.方法在进行解体污泥恢复试验之前一次性加入助凝剂硫酸亚铁,维持3d后,通过3组试验进行解体污泥的恢复研究.3组方案分别通过改善环境pH值、营养物质比例以及温度,考察恢复过程中污泥性质和水质指标的变化,并对这些变化进行分析.结果加入硫酸亚铁后,反应器内污泥污泥膨胀指数(SVI)迅速降低,但维持到第2天后SVI值再次升高甚至超过初始状态.在进行污泥活性恢复的3组试验中,第Ⅰ组调整pH值,经过30 d的运行,SVI值依然超出污泥膨胀限值的0.66倍,水处理效率依然较差.第Ⅱ组调整营养比例,在22 d内污泥解体现象得到缓解,但污泥活性尚未恢复.第Ⅲ组调整温度,系统到运行20 d,污泥趋于稳定,处理效率得到明显提升,污泥解体现象得以解决.结论硫酸亚铁可以短时间缓解污泥解体现象,但不能从根本上解决污泥解体问题.污泥解体是由于温度改变造成的,pH值和营养比例不是造成污泥解体的主要原因,调节温度至理想条件是恢复污泥解体活性的最佳方法.
This paper aims to exploration the reason and recovering method of the disintegrated sludge of phosphate reduction technology,f or further study the properties of phosphate reduction and its system recovery. Before the disintegrated sludge recovered test,certain amount of the coagulant ferrous sulfate was added to maintain three days. The recovery of disintegrated sludge was carried out by three groups of experiments. Three groups were selected by improving the environmental pH, the proportion of nutrients and the temperature. During the recovery process, the changes in sludge property and water quality indicator were examined and analyzed. As a result,afteradding ferrisulfas, the SVI value in the reactor is rapidly reduced,but after the second day, the SVI value increases again or even beyond the initial state. In the 3 groups of experiments,after adjusting the pH value in the first group, the SVI still exceeds 0. 66 times of the sludge bulking limit after 30 d of operation,and the water treatment efficiency is still poor. After adjusting the ratio of the nutrients in the second group, the disintegration of the sludge has been alleviated in 22 days,but the activity of sludge has not yet been restored. In the third group,after raising the temperature, the sludge characteristics tend to keep constant after 20 d of operation,and the efficiency is significantly improved. The disintegrated sludge has been effectively controlled. So, the ferrisulfas can relieve the problem of disintegrated sludge,but it cannot fundamentally solve the problem of sludge disintegration.The disintegration of the sludge was caused by temperature change. The pH value and the nutrient ratio are not the main reasons for the disintegration of the sludge. The best method to restore the activity of the disintegration sludge is to adjust the temperature to the ideal condition.
This paper aims to exploration the reason and recovering method of the disintegrated sludge of phosphate reduction technology,f or further study the properties of phosphate reduction and its system recovery. Before the disintegrated sludge recovered test,certain amount of the coagulant ferrous sulfate was added to maintain three days. The recovery of disintegrated sludge was carried out by three groups of experiments. Three groups were selected by improving the environmental pH, the proportion of nutrients and the temperature. During the recovery process, the changes in sludge property and water quality indicator were examined and analyzed. As a result,afteradding ferrisulfas, the SVI value in the reactor is rapidly reduced,but after the second day, the SVI value increases again or even beyond the initial state. In the 3 groups of experiments,after adjusting the pH value in the first group, the SVI still exceeds 0. 66 times of the sludge bulking limit after 30 d of operation,and the water treatment efficiency is still poor. After adjusting the ratio of the nutrients in the second group, the disintegration of the sludge has been alleviated in 22 days,but the activity of sludge has not yet been restored. In the third group,after raising the temperature, the sludge characteristics tend to keep constant after 20 d of operation,and the efficiency is significantly improved. The disintegrated sludge has been effectively controlled. So, the ferrisulfas can relieve the problem of disintegrated sludge,but it cannot fundamentally solve the problem of sludge disintegration.The disintegration of the sludge was caused by temperature change. The pH value and the nutrient ratio are not the main reasons for the disintegration of the sludge. The best method to restore the activity of the disintegration sludge is to adjust the temperature to the ideal condition.
引文
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[8]刘辉.焦化污水生化处理污泥解体控制技术的研究[D].鞍山:辽宁科技大学,2012.(LIU Hui.Study on the control technology of coking w astew ater biochemical treatment sludge disintegration[D].Anshan:University of Science and Technology Liaoning,2012.)
[9]李采芳,曾明,于惠中.宣化污水厂活性污泥解体原因分析及活性恢复对策[J].中国给水排水,2016,32(10):148-150.(LI Caifang,ZENG Ming,YU Huizhong.Reason analysis of activated sludge disintegration and measures of restoring activity in Xuanhua sew age treatment plant[J].China w ater&w astew ater,2016,32(10):148-150.)
[10]王新华,张捍民,杨凤林,等.解体好氧颗粒污泥修复[J].大连理工大学学报,2010,50(2):183-187.(Wang Xinhua,ZHANG Hanmin,YANG Fenglin,et al.Remediation of disintegrated aerobic granules[J].Journal of Dalian university of technology,2010,50(2):183-187.)
[11]RODGERS M,WU G.Production of poly hydroxyl butyrate by activated sludge performing enhanced biological phosphorus removal[J].Bioresource technology,2010,101(3):1049-1053.
[12]FANG F,SHENG G P,YU H Q.A novel integrated approach to the enhanced production of poly hydro butyrate w ith mixed culture in activated sludge[J].Industrial and engineering chemistry research,2010,49(16):7478-7483.
[13]XIA E,ZHOU L,LI P,et al.Progress in the microcosmic study of the filamentous bacterium sludge expansion[J].Industrial w ater treatment,2009,29(1):10-12.
[14]JIN D C,WANG P,BAI Z H,et al.Analysis of bacterial community in bulking sludge using culture-dependent and independent approaches[J].Journal of environmental sciences,2011(11):1880-1887.
[15]OU Y J X,SHI Z,ZHONG H,et al.Static aerobic composting of municipal sew age sludge w ith forced ventilation:using matured compost as bulking conditioner[J].Journal of central south university,2014(1):303-309.
[16]徐丽,魏文涛,马兴冠.基于UASB反应器的低碳磷酸盐还原菌种源污泥的培养和驯化[J].沈阳建筑大学学报(自然科学版),2016,32(4):737-743.(XU Li,WEI Wentao,MA Xingguan.Cultivation and domestication of low-carbon bacteria of phosphate reduction sludge based on UASB reactor[J].Journal of Shenyang jianzhu university(natural science),2016,32(4):737-743.)
[17]任南琪,刘娇,王秀蘅.低温时污泥膨胀对M BR中膜污染的影响[J].环境科学,2009,30(1):155-159.(REN Nanqi,LIU Jiao,WANG Xiuheng.Effect of sludge bulking on membrane fouling of M BR under low temperature[J].Environmental science,2009,30(1):155-159.)
[18]桂丽娟.污泥丝状菌微膨胀的引发与控制[D].哈尔滨:哈尔滨工业大学,2010.(GUI Lijuan.The start and inhibition of flimited filamentous sludge bulking[D].Harbin:Harbin Institute of Technology,2010.)
[19]任伯帜,唐艳,李和志.活性污泥膨胀机理及控制方法研究[J].南华大学学报(自然科学版),2010,24(2):103-107.(REN Bozhi,TANG Yan,LI Hezhi.Progress of studies on the mechanism and control of activated sludge bulking[J].Journal of university of south China(science and technology),2010,24(2):103-107.)
[20]李鹏,周利,赵永柱.药剂法在控制丝状菌污泥膨胀中的应用[J].工业水处理,2008,28(7):4-5.(LI Peng,ZHOU Li,ZHAO Yongzhu,et al.Application of medical method to the expanding control of filamentous bacterium sludge[J].Industrial water treatment,2008,28(7):4-5.)
[2]张颖,邓良伟.猪场废水厌氧消化过程中的除磷效果[J].生态与农村环境学报,2012,28(1):93-97.(ZHANG Ying,DENG Liangwei.Phosphorus removal from sw ine w astew ater through anaerobic digestion[J].Journal of ecology and rural environment,2012,28(1):93-97.)
[3]刘晖,孙彦富,周康群,等.厌氧除磷菌的富集及功能菌组成研究[J].安徽农业科学,2011(10):5976-5980.(LIU Hui,SUN Yanfu,ZHOU Kangqun,et al.Enrichment and composition analysis of anaerobic dephosphorization bacteria[J].Journal of Anhui agricultural sciences,2011(10):5976-5980.)
[4]荣宏伟,张佩兰,高冠华,等.磷浓度对厌氧生物除磷效果及其微生物群落结构[J].广州大学学报(自然科学版),2013,12(2):88-94.(RONG Hongwei,ZHANG Peilan,GAO Guanhua,et al.The effects of different phosphorous concentration on results of anaerobic biological phosphate removal from w aste w ater and microbial community structure[J].Journal of Guangzhou university(natural science),2013,12(2):88-94.)
[5]张佩兰.厌氧生物除磷及其微生物种群结构特性的研究[D].广州:广州大学,2011.(ZHANG Peilan.Study on anaerobe phosphorus removal and the structure property of microbial community[D].Guangzhou:Guangzhou University,2011.)
[6]LI J B,ZHANG G L,ZHANG J,et al.Matrix bound phosphine in sediments of the changjiang estuary and its adjacent shelf areas[J].Estuarine coastal&shelf science,2010,90(4):206-211.
[7]LONG T R,CHEN Yao,ZHOU J.Dephosphorization mechanism of prolonged sludge age SBBR treating saline and high-phosphorus w astew ater[J].Journal of central south university of technology,2009(S1):363-367.
[8]刘辉.焦化污水生化处理污泥解体控制技术的研究[D].鞍山:辽宁科技大学,2012.(LIU Hui.Study on the control technology of coking w astew ater biochemical treatment sludge disintegration[D].Anshan:University of Science and Technology Liaoning,2012.)
[9]李采芳,曾明,于惠中.宣化污水厂活性污泥解体原因分析及活性恢复对策[J].中国给水排水,2016,32(10):148-150.(LI Caifang,ZENG Ming,YU Huizhong.Reason analysis of activated sludge disintegration and measures of restoring activity in Xuanhua sew age treatment plant[J].China w ater&w astew ater,2016,32(10):148-150.)
[10]王新华,张捍民,杨凤林,等.解体好氧颗粒污泥修复[J].大连理工大学学报,2010,50(2):183-187.(Wang Xinhua,ZHANG Hanmin,YANG Fenglin,et al.Remediation of disintegrated aerobic granules[J].Journal of Dalian university of technology,2010,50(2):183-187.)
[11]RODGERS M,WU G.Production of poly hydroxyl butyrate by activated sludge performing enhanced biological phosphorus removal[J].Bioresource technology,2010,101(3):1049-1053.
[12]FANG F,SHENG G P,YU H Q.A novel integrated approach to the enhanced production of poly hydro butyrate w ith mixed culture in activated sludge[J].Industrial and engineering chemistry research,2010,49(16):7478-7483.
[13]XIA E,ZHOU L,LI P,et al.Progress in the microcosmic study of the filamentous bacterium sludge expansion[J].Industrial w ater treatment,2009,29(1):10-12.
[14]JIN D C,WANG P,BAI Z H,et al.Analysis of bacterial community in bulking sludge using culture-dependent and independent approaches[J].Journal of environmental sciences,2011(11):1880-1887.
[15]OU Y J X,SHI Z,ZHONG H,et al.Static aerobic composting of municipal sew age sludge w ith forced ventilation:using matured compost as bulking conditioner[J].Journal of central south university,2014(1):303-309.
[16]徐丽,魏文涛,马兴冠.基于UASB反应器的低碳磷酸盐还原菌种源污泥的培养和驯化[J].沈阳建筑大学学报(自然科学版),2016,32(4):737-743.(XU Li,WEI Wentao,MA Xingguan.Cultivation and domestication of low-carbon bacteria of phosphate reduction sludge based on UASB reactor[J].Journal of Shenyang jianzhu university(natural science),2016,32(4):737-743.)
[17]任南琪,刘娇,王秀蘅.低温时污泥膨胀对M BR中膜污染的影响[J].环境科学,2009,30(1):155-159.(REN Nanqi,LIU Jiao,WANG Xiuheng.Effect of sludge bulking on membrane fouling of M BR under low temperature[J].Environmental science,2009,30(1):155-159.)
[18]桂丽娟.污泥丝状菌微膨胀的引发与控制[D].哈尔滨:哈尔滨工业大学,2010.(GUI Lijuan.The start and inhibition of flimited filamentous sludge bulking[D].Harbin:Harbin Institute of Technology,2010.)
[19]任伯帜,唐艳,李和志.活性污泥膨胀机理及控制方法研究[J].南华大学学报(自然科学版),2010,24(2):103-107.(REN Bozhi,TANG Yan,LI Hezhi.Progress of studies on the mechanism and control of activated sludge bulking[J].Journal of university of south China(science and technology),2010,24(2):103-107.)
[20]李鹏,周利,赵永柱.药剂法在控制丝状菌污泥膨胀中的应用[J].工业水处理,2008,28(7):4-5.(LI Peng,ZHOU Li,ZHAO Yongzhu,et al.Application of medical method to the expanding control of filamentous bacterium sludge[J].Industrial water treatment,2008,28(7):4-5.)