摘要：
探讨了微电解技术在碱性废水处理中的应用,进行了Al/C微电解对印染废水的预处理实验研究。通过单因素实验和正交实验考察了进水pH、铝屑投加量、铝炭质量比和反应时间对CODCr去除率的影响。结果表明:当原水CODCr为8986 mg/L,pH为12.06,铝屑投加量为100 g/L,铝炭质量比为1∶1.5,反应时间为2 h时,可得到较好的处理效果,CODCr去除率达42.22%;废水B/C由原来的0.15提高至0.46,可生化性大幅提高,为后续生物处理创造了良好的条件。通过SEM分析,证实了该反应过程与微电解反应原理相吻合。
关键词:
印染废水,
铝炭微电解,
可生化性
Abstract:
The application of micro-electrolysis technology to the treatment of alkaline wastewater is discussed.Aluminum-carbon micro-electrolysis technology used for pre-treating printing and dyeing wastewater has been studied.The factors that affect the CODCr removing efficiency,including influent pH,Al crumbs dosage,Al/C mass ratio and reaction time are investigated by single-factor experiments and orthogonal tests.The results show that when raw water CODCris 8986 mg/L,pH 12.06,Al crumbs dosage 100 g/L,Al/C mass ratio 1∶1.5,and reaction time 2 h,good results from the wastewater treatment can be obtained.The removing rate of CODCrreaches 42.22%,and wastewater B/C is increased from 0.15 to 0.46.Thus,the biodegradability has been improved obviously,which creates good conditions for subsequent biochemical treatment.Scanning electron microscope(SEM) is used for observing the surface of aluminum,and it is found that the reaction process is identical with micro-electrolysis reaction principle.
Key words:
printing and dyeing wastewater,
aluminum-carbon microel-ectrolysis,
biodegradability
中图分类号:
赵淑萍, 王中琪, 张志军. Al/C微电解预处理印染废水研究[J]. 工业水处理, 2013, 33(3): 61-64.
Zhao Shuping, Wang Zhongqi, Zhang Zhijun. Study on the pretreatment of printing and dyeing wastewater by Al/C micro-electrolysis process[J]. INDUSTRIAL WATER TREATMENT, 2013, 33(3): 61-64.