铁碳微电解法在实际处理染料废水中的应用
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摘要
采用铁碳微电解法处理某实际染料废水,考察废水初始pH值、固液比、铁碳比和反应时间对废水处理效果的影响。结果表明,当初始pH值为2,铁投加量为11g/L,铁碳比为1:1,反应时间60min时,出水水质最好,废水脱色率为73%,平均COD去除率达到44%。通过铁碳微电解对染料废水进行预处理,不仅提高废水的可生化性降低后续工艺的处理负担,还可以废治废,是预处理高浓度燃料废水的有效方法之一。
The wastewater from dye production process was treated by ferric-carbon internal electrolysis. The factorsaffecting the removal of color and COD from the wastewater were investigated,such as original pH,ratio of solid to liquid,ratio of Fe to C and reaction time. Research on the most influence factors showed that when the original pH was 2,theamount of iron was 11g/L,the volume ratio of iron to carbon was 1∶1 and the reaction time was 60 min,the process canget an excellent removal rate in the experience. After 30 hours treatment,the decolorizing rate was 73%,and the removalrate of COD was 44%. Considering treatment effectiveness and economical cost,ferric-carbon internal electrolysistechnology could be effective and feasible.
The wastewater from dye production process was treated by ferric-carbon internal electrolysis. The factorsaffecting the removal of color and COD from the wastewater were investigated,such as original pH,ratio of solid to liquid,ratio of Fe to C and reaction time. Research on the most influence factors showed that when the original pH was 2,theamount of iron was 11g/L,the volume ratio of iron to carbon was 1∶1 and the reaction time was 60 min,the process canget an excellent removal rate in the experience. After 30 hours treatment,the decolorizing rate was 73%,and the removalrate of COD was 44%. Considering treatment effectiveness and economical cost,ferric-carbon internal electrolysistechnology could be effective and feasible.
引文
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[3]单明军,闵玉国,沈雪,等.微电解法进行焦化废水脱氮的研究[J].燃料与化工,2007,38(1):38-41.
[4]Scherer M M,Balko B A and Tratnyek P G.The role of oxides in reduction reactions at the metal-water interface[J].Environmental Science&Technology,1998,32(1):301-302.
[5]王喜全,胡筱敏,沈雪,等.铁碳微电解法处理染料废水[J].环保科技,2008,14(4):27-29.
[6]Garda J C,Oiiveira J L,Siiva A E C,et al.Comparative study of the degradation of real textile effluents by photocatalytic reactionsinvolving UV/Ti O2/H2O2and UV/Fe2+/H2O2systems[J].J.Hazardous Materials,2007,147(1-2):105-110.
[2]周崟,李平,吴锦华,等.活性艳蓝KN-R染料废水的电解氧化及其毒性消减[J].化工环保,2009,29(1):10-13.
[3]单明军,闵玉国,沈雪,等.微电解法进行焦化废水脱氮的研究[J].燃料与化工,2007,38(1):38-41.
[4]Scherer M M,Balko B A and Tratnyek P G.The role of oxides in reduction reactions at the metal-water interface[J].Environmental Science&Technology,1998,32(1):301-302.
[5]王喜全,胡筱敏,沈雪,等.铁碳微电解法处理染料废水[J].环保科技,2008,14(4):27-29.
[6]Garda J C,Oiiveira J L,Siiva A E C,et al.Comparative study of the degradation of real textile effluents by photocatalytic reactionsinvolving UV/Ti O2/H2O2and UV/Fe2+/H2O2systems[J].J.Hazardous Materials,2007,147(1-2):105-110.