摘要：

采用H₂O₂-微电解/MnO₂工艺处理造纸废水,研究了pH、铁炭用量、铁炭比、反应时间、MnO₂加入量、H₂O₂投加量等因素对处理效果的影响.结果表明,pH=3.0,铁炭总投加质量浓度为20 g/L,MnO₂投加质量浓度为2.50 g/L,H₂O₂投加质量浓度为0.55 g/L,铁炭物质的量比为1:1,反应时间为50 min时,造纸废水的COD、SS、氨氮、总磷、BOD₅的去除率分别为88%、98.4%、85%、98%、52%.同时可生化性由0.32提高到 0.81,减小了后续生化处理工艺负荷.

关键词: 再生造纸废水, 微电解, 预处理

Abstract:

H₂O₂-micro-electrolysis/MnO₂ process has been used for treating paper-making wastewater. The influences of the factors,such as pH,total iron and carbon,proportion of iron and carbon,reaction time,MnO₂ dosage,H₂O₂ dosage,etc. on the removing effects are studied. The results show that when its pH is 3.0,total iron and carbon 20 g/L,MnO₂ dosage 2.50 g/L,H₂O₂ dosage 0.55 g/L,ratio of iron and carbon 1:1,and reaction time 50 min,the removing rates of COD,SS,ammonia nitrogen,total phosphorous,BOD₅, can reach 88%,98.4%,85%,98%,and 52%,respectively. The biodegradability is increased from 0.32 to 0.81. As a result,the load of subsequent biochemical treatment process is lightened.

Key words: regenerated paper-making water, micro-electrolysis, pretreatment

中图分类号: 

• X703.1