改进型铁碳微电解设备预处理硝基苯废水
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摘要
针对传统铁碳微电解装置存在的偏流、堵塞、填料板结等问题,对装置结构进行了优化改进,采用催化微电解填料对硝基苯废水进行预处理。在装置内部增加挡圈防止设备偏流,增设废水内循环工艺以防止设备堵塞,改变填料的结构以防止设备板结,并采用催化微电解填料提高反应速率。在此基础上,研究了催化填料类型、进水浓度、反应时间及pH值对微电解反应过程的影响,以探索硝基苯预处理的显著影响因素和最佳条件。结果表明:采用含铜催化剂,硝基苯的质量浓度为30 mg/L,反应时间为60 min,pH为3. 0时,反应达到最佳状态,出水能够达到GB 8978—1996《污水综合排放标准》,且设备运行稳定可靠。
In this paper,we optimized the iron-carbon micro-electrolysis device which used catalytic micro-electrolysis filler as the pretreatment for the nitrobenzene wastewater,aiming at the bias,clogging,packing and other issues. In this study,the retaining ring was added inside the reactor to prevent the device bias current,and internal circulation was adapted to prevent the congestion. We also optimized the structure of the filler to prevent the equipment from being knitted and used catalytic micro-electrolytic packing as the pretreatment to increase the reaction rate. On this basis,the effect of species of catalytic fillers,concentration of influent,reaction time and pH value on micro-electrolysis process were studied. The significant factors and optimum condition was determined by this experiment. The results indicated that the optimum conditions for catalytic packing,concentration of influent,reaction time and pH value were copper-containing catalyst,30 mg/L,60 min,and 3. 0,respectively. The effluence could meet the integrated wastewater discharge standard( GB 8978—1996) and processing efficiency was stable.
In this paper,we optimized the iron-carbon micro-electrolysis device which used catalytic micro-electrolysis filler as the pretreatment for the nitrobenzene wastewater,aiming at the bias,clogging,packing and other issues. In this study,the retaining ring was added inside the reactor to prevent the device bias current,and internal circulation was adapted to prevent the congestion. We also optimized the structure of the filler to prevent the equipment from being knitted and used catalytic micro-electrolytic packing as the pretreatment to increase the reaction rate. On this basis,the effect of species of catalytic fillers,concentration of influent,reaction time and pH value on micro-electrolysis process were studied. The significant factors and optimum condition was determined by this experiment. The results indicated that the optimum conditions for catalytic packing,concentration of influent,reaction time and pH value were copper-containing catalyst,30 mg/L,60 min,and 3. 0,respectively. The effluence could meet the integrated wastewater discharge standard( GB 8978—1996) and processing efficiency was stable.
引文
[1]李轶，胡洪营，吴乾元，等．低温硝基苯细菌的筛选及降解特性研究[J]．环境科学，2007,28(4):902-907.
[2]李明堂，徐镜波，盛连喜．硝基苯好氧降解细菌的筛选和降解活性研究[J]．吉林农业大学学报，2006,28(5):552-555.
[3] Hankinson K, Schaeffer D, J Buff. Micro fox assay of trinitrotoluene diaminon itrotofuene and dinitromethy lanifine mixture[J]. Environ Contemn Toxic,1991,46(4):550-553.
[4]马汐平，付宝荣，刘洁，等．制药废水中硝基苯致突性的细菌检测试验[J]．辽宁大学学报，1999,26(2):175-178.
[5]俸志荣，焦纬洲，刘有智，等．铁碳微电解处理含硝基苯废水[J]．化工学报，2015,66(3):1150-1155.
[6] Yin W Z,Wu J H,Li P,et al.Experimental study of zero-valent iron induced nitrobenzene reduction in groundwater:the effects of pH,iron dosage,oxygen and common dissolved anions[J].Chemical Engineering Journal,2012,184:198-204.
[7]樊金红，徐文英，高廷耀．催化铁内电解法预处理硝基苯废水[J]．水处理技术，2005,31(5):58-61.
[8]张维涛．铁碳微电解预处理硝基苯废水工艺研究进展[J]．广州化工，2015,43(6):39-41.
[9]张群绸，仝攀瑞，程刚．微电解法预处理硝基苯废水的研究[J]．新疆环境保护，2005,27(3):9-11.
[10]张楠，何文双．铁碳微电解处理硝基苯废水的实验研究[J]．环境科学与管理，35(4):100-106.
[11]王俊钧．催化零价铁处理吉林化纤厂腈纶废水[D]．北京:北京化工大学，2010.
[12]刘东飞，胡涓，陈整生，等．铝碳微电解处理含铜、镍电镀废水[J]．常州大学学报(自然科学版)，2012,24(1):51-54.
[13]国家环境保护总局《水和废水监测分析方法》编委会．水和废水监测分析方法[M]. 4版．北京:中国环境科学出版社，2002.
[2]李明堂，徐镜波，盛连喜．硝基苯好氧降解细菌的筛选和降解活性研究[J]．吉林农业大学学报，2006,28(5):552-555.
[3] Hankinson K, Schaeffer D, J Buff. Micro fox assay of trinitrotoluene diaminon itrotofuene and dinitromethy lanifine mixture[J]. Environ Contemn Toxic,1991,46(4):550-553.
[4]马汐平，付宝荣，刘洁，等．制药废水中硝基苯致突性的细菌检测试验[J]．辽宁大学学报，1999,26(2):175-178.
[5]俸志荣，焦纬洲，刘有智，等．铁碳微电解处理含硝基苯废水[J]．化工学报，2015,66(3):1150-1155.
[6] Yin W Z,Wu J H,Li P,et al.Experimental study of zero-valent iron induced nitrobenzene reduction in groundwater:the effects of pH,iron dosage,oxygen and common dissolved anions[J].Chemical Engineering Journal,2012,184:198-204.
[7]樊金红，徐文英，高廷耀．催化铁内电解法预处理硝基苯废水[J]．水处理技术，2005,31(5):58-61.
[8]张维涛．铁碳微电解预处理硝基苯废水工艺研究进展[J]．广州化工，2015,43(6):39-41.
[9]张群绸，仝攀瑞，程刚．微电解法预处理硝基苯废水的研究[J]．新疆环境保护，2005,27(3):9-11.
[10]张楠，何文双．铁碳微电解处理硝基苯废水的实验研究[J]．环境科学与管理，35(4):100-106.
[11]王俊钧．催化零价铁处理吉林化纤厂腈纶废水[D]．北京:北京化工大学，2010.
[12]刘东飞，胡涓，陈整生，等．铝碳微电解处理含铜、镍电镀废水[J]．常州大学学报(自然科学版)，2012,24(1):51-54.
[13]国家环境保护总局《水和废水监测分析方法》编委会．水和废水监测分析方法[M]. 4版．北京:中国环境科学出版社，2002.
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