好氧生物法处理天然色素生产废水厌氧出水
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摘要
天然色素生产废水的厌氧出水COD偏高、水质不稳定,需进一步去除水中残余的污染物。采用好氧连续流反应器,以厌氧反应器出水为培养基质,研究容积负荷、温度、溶解氧对好氧反应器的影响。结果表明:容积负荷是影响出水COD的决定性因素,COD容积负荷从0.01 kg/(m~3·d)提高到0.1 kg/(m~3·d),出水COD从250 mg/L升高到700 mg/L,增加2 mg/L溶解氧可使出水COD降低50 mg/L。现场调试结果要优于实验室运行结果。
Since the anaerobic effluent of natural pigment production wastewater is characterized by high COD and unstable water quality,it is necessary to further remove the residual pollutants from water. Using aerobic continuous flow reactor,while anaerobic reactor effluent as culture matrix,the influences of volume load(VL),temperature,and dissolved oxygen(DO) on the aerobic reactor have been investigated. The results show that volume load is the decisive factor that affects the effluent COD. The COD volume load is increased from 0.01 kg/(m~3·d) to 0.1 kg/(m~3·d),while effluent COD is increased from 250 mg/L to 700 mg/L. Adding 2 mg/L of DO can make the effluent COD reduce by an additional 50 mg/L. The results of field debugging of aerobic treatment are better than that of laboratory operation.
Since the anaerobic effluent of natural pigment production wastewater is characterized by high COD and unstable water quality,it is necessary to further remove the residual pollutants from water. Using aerobic continuous flow reactor,while anaerobic reactor effluent as culture matrix,the influences of volume load(VL),temperature,and dissolved oxygen(DO) on the aerobic reactor have been investigated. The results show that volume load is the decisive factor that affects the effluent COD. The COD volume load is increased from 0.01 kg/(m~3·d) to 0.1 kg/(m~3·d),while effluent COD is increased from 250 mg/L to 700 mg/L. Adding 2 mg/L of DO can make the effluent COD reduce by an additional 50 mg/L. The results of field debugging of aerobic treatment are better than that of laboratory operation.
引文
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[11]曾勇,周俊,闫志英,等.废水同步脱硫脱氮关键工艺参数及微生物群落结构的研究[J].环境科学学报,2018,38(1):173-182.
[12]Gan Hanming,Chew T H,Tay Y L,et al.Genome sequence of Ralstonia sp.strain PBA,a bacterium involved in the biodegradation of4-aminobenzenesulfonate[J].Journal of Bacteriology,2012,194(18):5139-5140.
[2]Wan Dongjin,Liu Yongde,Niu Zhenhua,et al.Perchlorate reduction by hydrogen autotrophic bacteria and microbial community analysis using high-throughput sequencing[J].Biodegradation,2016,27(1):47-57.
[3]梅特卡夫和埃迪公司,秦裕珩.废水工程:处理及回用[M].北京:化学工业出版社,2004:441-443.
[4]高景峰,彭永臻,王淑莹.SBR法去除有机物、硝化和反硝化过程中pH变化规律[J].环境工程,2001,19(5):21-24.
[5]王伸,邓良伟,徐则,等.pH对好氧处理及污泥性能的影响[J].中国沼气,2016,34(5):22-26.
[6]Niu Tianhao,Zhou Zhen,Shen Xuelian,et al.Effects of dissolved oxygen on performance and microbial community structure in a micro-aerobic hydrolysis sludge in situ reduction process[J].Water Research,2016,90:369-377.
[7]Li Jun,Ding Libin,Cai Ang,et al.Aerobic sludge granulation in a full-scale sequencing batch reactor[J].Biomed Research International,2014(5):1-12.
[8]贾丽.A+OSA污泥减量工艺物质能量转化及其微生态特性研究[D].重庆:重庆大学,2012.
[9]Mcgarvey J A,Miller W G,Zhang Ruihong,et al.Bacterial population dynamics in dairy waste during aerobic and anaerobic treatment and subsequent storage[J].Applied&Environmental Microbiology,2007,73(1):193-202.
[10]Pei Haiyan,Xu Hangzhou,Wang Jingjing,et al.16S rRNA gene amplicon sequencing reveals significant changes in microbial compositions during cyanobacteria-laden drinking water sludge storage[J].Environmental Science&Technology,2017,51(21):12774-12783.
[11]曾勇,周俊,闫志英,等.废水同步脱硫脱氮关键工艺参数及微生物群落结构的研究[J].环境科学学报,2018,38(1):173-182.
[12]Gan Hanming,Chew T H,Tay Y L,et al.Genome sequence of Ralstonia sp.strain PBA,a bacterium involved in the biodegradation of4-aminobenzenesulfonate[J].Journal of Bacteriology,2012,194(18):5139-5140.