摘要
采用反渗透-微电解集成技术处理印染废水,印染废水先经反渗透膜处理,反渗透膜透过液达到了再生水的水质,浓缩液利用铁炭微电解处理,处理后达标排放.本文系统地考察了浓缩液初始pH值、活性炭的投加量、铁屑的投加量、反应时间等因素对微电解处理效果的影响,最后还讨论了微电解反应后用NaOH絮凝处理的效果,确定铁炭微电解的最佳反应条件.实验结果表明,铁炭微电解处理印染废水浓缩液的最佳反应条件为:溶液初始pH值为2.0,铁炭质量比1∶1,反应时间为30 min,反应后采用0.16 g/L的NaOH混凝处理.在此反应条件下,铁炭微电解法对印染废水浓缩液处理十分有效,CODCr、浊度、色度去除率分别达到75%、99%、100%处理后的水质能够达到排放标准,而且经微电解处理后,很大程度上提高了废水的可生化性,为印染废水浓缩液的进一步生化处理创造了条件,所以处理后的废水也可排放到城市污水处理厂.
Dye effluent is treated through a so-called hybrid process of reverse osmosis and microelectrolysis. The dye effluent is first filtered through reverse osmosis. The concentrate is then microeleetrolyzed. The effect of original pH value of concentrate,activated carbon dosage,iron chip dosage and reaction time on the treatment efficiency is studied. Experiments show that the optimal reaction conditions of microelectrolysis are. pH=2. 0, ratio of iron to carbon--1：1, and reaction time--30 min. After microelectrolysis reaction, 0. 16g/L of sodium hydroxide is added to the supernatant for coagulant treatment. Very positive results are yielded：COD removal, turbidity removal and color removal rate reach 75% ,99% and 100% respectively, This means that the outlet water is up to discharge standard and, owing to the conditions created by this treatment, further biochemical treatment of the effluent can be brought about. Therefore, the wastewater can also be directly discharged into the city sewage treatment plant.
出处
《内蒙古工业大学学报（自然科学版）》
2008年第3期178-182,共5页
Journal of Inner Mongolia University of Technology：Natural Science Edition
