不同培养方式下絮状污泥颗粒化特性和灰色关联度分析
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摘要
为探索好氧颗粒污泥形成机理,开展了不同培养方式下絮状污泥颗粒化特性研究.选取3种培养方式:人工配水培养、海藻酸钠强化培养和农村模拟污水培养,利用灰色关联分析法,对比3种不同培养方式下,污泥颗粒化过程中各影响因素灰色关联度系数,筛选好氧颗粒污泥培养的关键因素.研究发现,人工配水培养方式下经过40 d成功出现好氧颗粒污泥,投加海藻酸钠强化培养方式下经过20 d出现好氧颗粒污泥,农村模拟污水经过55 d培养出好氧颗粒污泥.3种培养方式下出现的好氧颗粒污泥均具有密实的结构和较好的沉降性能,同时可实现对污染物的高效去除.利用数据处理系统(Data Processing System,DPS)对各影响因素的灰色关联度进行分析,发现不同培养方式下污泥颗粒化过程中起主导作用的影响因素并非唯一,水力停留时间和胞外聚合物在各培养方式中均具有较高的关联度系数,对好氧颗粒污泥的形成具有关键作用.
In order to explore the formation mechanism of aerobic granular sludge(AGS),the contaminants removal performances and EPS secretion characteristics of AGS under different cultivation strategies were investigated,including AGS cultivated by synthetic wastewater,enhancing sodium alginate and rural domestic sewage.Based on the coefficient of gray relation(GR),the influence factors in the formation of AGS could be clarified.The experimental results show that the mature AGS were obtained after 40,20 and 55 days by different cultivation strategies,respectively.The granules could all present good settling property and stable structure,as well as high contaminants removal efficiencies.According to the GR analysis by data processing system(DPS),it could be found that the main influence factors of AGS formation was not unique,the relatively high GR coefficients of hydraulic retention time(HRT) and extracellular polymeric substances(EPS) demonstrated that HRT and EPS acted as the important roles in the formation of AGS.
In order to explore the formation mechanism of aerobic granular sludge(AGS),the contaminants removal performances and EPS secretion characteristics of AGS under different cultivation strategies were investigated,including AGS cultivated by synthetic wastewater,enhancing sodium alginate and rural domestic sewage.Based on the coefficient of gray relation(GR),the influence factors in the formation of AGS could be clarified.The experimental results show that the mature AGS were obtained after 40,20 and 55 days by different cultivation strategies,respectively.The granules could all present good settling property and stable structure,as well as high contaminants removal efficiencies.According to the GR analysis by data processing system(DPS),it could be found that the main influence factors of AGS formation was not unique,the relatively high GR coefficients of hydraulic retention time(HRT) and extracellular polymeric substances(EPS) demonstrated that HRT and EPS acted as the important roles in the formation of AGS.
引文
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史长东,徐恒铎,赵瑞芳.2012.进水COD浓度对A2/O工艺EPS的影响[J].东北电力大学学报,32(6):125-129
唐堂,王硕,蒋志坚,等.2016.群感效应与信号分子在污泥颗粒化过程中的作用研究进展[J].应用与环境生物学报,22(4):718-724
王福琨,刘永军,宋雪松,等.2013.颗粒污泥破碎-再形成过程中微生物胞外聚合物(EPS)的变化及其与污泥特性的相关性分析[J].环境化学,22(12):33-42
王硕,杨倩倩,王燕,等.2015.好氧颗粒污泥处理分散型农村生活污水的试验研究[J].中国给水排水,31(19):33-37
Wan C,Lee D J,Yang X,et al.2014.Calcium precipitate induced aerobic granulation[J].Bioresource Technology,176:32-37
Wang H F,Hao H,Yang H Y,et al.2016.Characterization of anaerobic granular sludge using a rheological approach[J].Water Research,106:116-125
Wang Z W,Li Y,Zhou J Q,et al.2006.The influence of short-term starvation on aerobic granules[J].Process Biochemistry,41(12):2373-2378
Xie Y R W,Zhang X H,Xie Q L,et al.2014.A review on aerobic granular sludge for heavy mental wastewater treatment[J].Applied Mechanics&Materials,535:213-216
Yu H Q.2008.Characteristics of aerobic granules for biological wastewater treatment[J].Journal of Biotechnology,136(4):S605-S605
杨忠林,钟中,韩萍芳,等.2012.HRT及EPS对ABR中污泥性能的影响[J].南京工业大学学报(自科版),34(4):22-26
Zhu L,Dai X,Lv M,et al.2013.Correlation analysis of major control factors for the formation and stabilization of aerobic granule[J].Environmental Science and Pollution Research,20(5):3165-3175
陈洁,袁莉,王强,等.2006.沉降速率作为选择压对好氧颗粒污泥性质影响[J].环境科学与技术,29(4):29-31
宫小燕,宋瑞平,李国学,等.2009.不同温度下有机负荷对厌氧折流板反应器污泥颗粒化的影响[J].环境工程学报,3(5):839-843
郝晓地,孙晓明,Markvan L,等.2011.好氧颗粒污泥技术工程化进展一瞥[J].中国给水排水,27(20):9-12
Li J,Ding L B,Cai A,et al.2014.Aerobic sludge granulation in a fullscale sequencing batch reactor[J].Biomed Research International,26(5):87-89
Liang Z,Li W,Yang S,et al.2010.Extraction and structural characteristics of extracellular polymeric substances(EPS),pellets in autotrophic nitrifying biofilm and activated sludge[J].Chemosphere,81(5):626-632
李超敏,韩梅,张良,等.2006.细胞固定化技术-海藻酸钠包埋法的研究进展[J].安徽农业科学,34(7):1281-1282
鲁磊,信欣,鲁航,等.2015.连续流好氧颗粒污泥系统处理低COD/N实际生活污水的工艺优化[J].环境科学,36(10):3778-3785
Liu Y Q,Tay J H.2008.Influence of starvation time on formation and stability of aerobic granules in sequencing batch reactors[J].Bioresource Technology,99(5):980-985
Miksch K,Beata K.2012.Distribution of extracellular polymeric substances and their role in aerobic granule formation[J].Inzynieria Chemiczna I Procesowa,33(4):679-688
Pronk M,de Kreuk M K,De B B,Kamminga P,et al.2015.Full scale performance of the aerobic granular sludge process for sewage treatment[J].Water Research,84:207-217
史长东,徐恒铎,赵瑞芳.2012.进水COD浓度对A2/O工艺EPS的影响[J].东北电力大学学报,32(6):125-129
唐堂,王硕,蒋志坚,等.2016.群感效应与信号分子在污泥颗粒化过程中的作用研究进展[J].应用与环境生物学报,22(4):718-724
王福琨,刘永军,宋雪松,等.2013.颗粒污泥破碎-再形成过程中微生物胞外聚合物(EPS)的变化及其与污泥特性的相关性分析[J].环境化学,22(12):33-42
王硕,杨倩倩,王燕,等.2015.好氧颗粒污泥处理分散型农村生活污水的试验研究[J].中国给水排水,31(19):33-37
Wan C,Lee D J,Yang X,et al.2014.Calcium precipitate induced aerobic granulation[J].Bioresource Technology,176:32-37
Wang H F,Hao H,Yang H Y,et al.2016.Characterization of anaerobic granular sludge using a rheological approach[J].Water Research,106:116-125
Wang Z W,Li Y,Zhou J Q,et al.2006.The influence of short-term starvation on aerobic granules[J].Process Biochemistry,41(12):2373-2378
Xie Y R W,Zhang X H,Xie Q L,et al.2014.A review on aerobic granular sludge for heavy mental wastewater treatment[J].Applied Mechanics&Materials,535:213-216
Yu H Q.2008.Characteristics of aerobic granules for biological wastewater treatment[J].Journal of Biotechnology,136(4):S605-S605
杨忠林,钟中,韩萍芳,等.2012.HRT及EPS对ABR中污泥性能的影响[J].南京工业大学学报(自科版),34(4):22-26
Zhu L,Dai X,Lv M,et al.2013.Correlation analysis of major control factors for the formation and stabilization of aerobic granule[J].Environmental Science and Pollution Research,20(5):3165-3175
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