摘要：

采用微电解-Fenton 氧化法对新诺明合成废水进行预处理试验研究。通过正交及单因素试验确定微电解法的最佳工艺条件为:Fe、C质量比3:1、Fe的投加量120 g/L、初始反应pH在3.0、反应时间3 h,废水COD为32 100 mg/L左右时,经预处理后COD去除率达27%以上;联合Fenton 氧化法确定最佳反应条件为:H₂O₂投加量4 mL/L、反应时间60 min,处理后出水总COD去除率达到55%以上,B/C由0.12提高至0.30。该废水经预处理后可生化性明显提高,为后续生化处理创造了条件。

关键词: 新诺明合成废水, 预处理, 微电解, 可生化性

Abstract:

Experimental research on the pretreatment of synthetic wastewater of Sinomine has been accomplished by micro-electrolysis and Fenton oxidation method. The orthogonal experiments and single factor experiments results indicate that the optimal conditions of micro-electrolysis are as follows:the mass ratio of Fe and C=3:1,Fe dosage=120 g/L,initial pH=3.0,reaction time 3 h,and the wastewater COD about 32 100 mg/L. After the pretreatment,the removing rate of COD reaches more than 27%. Combining with Fenton oxidation method,the optimal reaction conditions can be determined as follows:H₂O₂ dosage is 4 mL/L,and reaction time 60 min. It is found that the total removing rate of COD is more than 55% and the B/C of synthetic wastewater of Sinomine increases from 0.12 to 0.30. After the wastewater has been pretreated,the biodegradability of it is up-graded remarkably,creating conditions for the subsequent biochemical treatment.

Key words: synthetic wastewater of Sinomine, pretreatment, micro-electrolysis, biodegradability

中图分类号: 

• X703.1