甲苯二胺对厌氧微生物活性的影响
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摘要
以相对产甲烷活性(RA)和COD去除率为指标,考察不同浓度甲苯二胺对厌氧污泥微生物活性的影响。实验结果表明:甲苯二胺质量浓度为0~150 mg/L时,RA接近100%甚至高于100%,COD去除率为91%~93%,与对照组无差别,对厌氧微生物几乎没有抑制作用;当甲苯二胺质量浓度为200~400 mg/L时,RA为75%~95%,COD去除率与对照组相比下降了2~6个百分点,属于轻度抑制;当甲苯二胺质量浓度高于400 mg/L时,RA在70%以下,COD去除率降至85%以下,属于中度抑制;且随着甲苯二胺质量浓度增大,RA减小、COD去除率减小,抑制作用增强。因此,为了防止甲苯二胺对厌氧污泥微生物活性的抑制,甲苯二胺质量浓度应控制在0~150 mg/L。
The effects of toluene diamine with different concentration on microbial activity of anaerobic sludge were investigated using relative methane production(RA)and COD removal rate as indicators. The experimental results showed that:When the mass concentration of toluene diamine was 0-150 mg/L,RA was close to 100% or more,and the COD removal rate was 91%-93%,and there was no difference between the control group,which indicated that the anaerobic microorganisms were not inhibited;When the mass concentration of toluene diamine was 200-400 mg/L,RA was 75%-95%,COD removal rate was 2-6 percentage points lower than that of the control group,which indicated that the anaerobic microorganisms were slightly inhibited;When the concentration of toluene diamine was higher than 400 mg/L,RA and COD removal rate were under 70% and 85% respectively,which indicated that the anaerobic microorganisms were moderately inhibited;With the increase of toluene diamine mass concentration,RA and COD removal rate were decreased,while the inhibition effect was increased. Therefore,the mass concentration of toluene diamine should be controlled at 0-150 mg/L to prevent the inhibition effect on microbial activity of anaerobic sludge.
The effects of toluene diamine with different concentration on microbial activity of anaerobic sludge were investigated using relative methane production(RA)and COD removal rate as indicators. The experimental results showed that:When the mass concentration of toluene diamine was 0-150 mg/L,RA was close to 100% or more,and the COD removal rate was 91%-93%,and there was no difference between the control group,which indicated that the anaerobic microorganisms were not inhibited;When the mass concentration of toluene diamine was 200-400 mg/L,RA was 75%-95%,COD removal rate was 2-6 percentage points lower than that of the control group,which indicated that the anaerobic microorganisms were slightly inhibited;When the concentration of toluene diamine was higher than 400 mg/L,RA and COD removal rate were under 70% and 85% respectively,which indicated that the anaerobic microorganisms were moderately inhibited;With the increase of toluene diamine mass concentration,RA and COD removal rate were decreased,while the inhibition effect was increased. Therefore,the mass concentration of toluene diamine should be controlled at 0-150 mg/L to prevent the inhibition effect on microbial activity of anaerobic sludge.
引文
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[3]Aoki K,Ohtsuka K,Shinke R,et al.Isolation of aniline-assimilating bacteria and physiological characterization of aniline biodegradation in Rhodococcus erythropolis AN-13[J].Agric Biol Chem,1983,47(11):2569-2575.
[4]Khan M F,Wu Xin,Kaphalia B S,et al.Acute hematopoietic toxicity of aniline in rats[J].Toxicol lett,1997,92(1):31-37.
[5]包伟,黄勇,张宁博,等.强化厌氧生物技术在印染废水处理中的应用[J].化工环保,2016,36(5):537-542.
[6]程学文,莫馗,王瑁,等.IC反应器厌氧处理MTO废水[J].化工环保,2016,36(6):641-645.
[7]张蕾,郭宏山,李宝忠,等.厌氧处理纤维素乙醇废水产甲烷动态研究[J].工业水处理,2016,36(10):60-64.
[8]马雄飞,王靖飞,田在锋,等.2,4-二叔丁基苯酚对活性污泥微生物的毒性研究[J].工业水处理,2015,35(8):18-21.
[9]贺延龄.废水的厌氧生物处理[M].北京:中国轻工业出版社,1998:548-558.
[10]吉喜燕,肖志海,林卫东,等.废弃大白菜厌氧消化产甲烷的实验研究[J].云南师范大学学报:自然科学版,2015,35(3):10-13.
[11]李超,王翀,刘国欢,等.不同粒径香蕉秸秆厌氧发酵产甲烷潜力[J].同济大学学报:自然科学版,2012,40(S2):75-80.
[12]Driessen W J B M,Tielbaard M H,Vereijken T L F M.Experience on anaerobic treatment of distillery effluent with the UASB process[J].Water Sci Technol,1994,30(12):193-201.
[13]国家环保局《水和废水监测分析方法》编委会.水和废水监测分析方法[M].3版.北京:中国环境科学出版社,1989.