摘要
采用Fenton试剂氧化-混凝联合工艺对难处理络合铜镍电镀废水进行了研究,考察了废水初始pH值、H2O2初始浓度、[Fe2+]/[H2O2]、反应时间和温度、混凝液pH、混凝剂质量浓度对处理过程的影响,探讨了废水的降解途径和机理。结果表明,在体系初始pH=4,温度30℃,H2O2投加量为800 mg/L,[Fe2+]/[H2O2]=0.1,反应时间60 m in,混凝液pH=8及混凝剂质量浓度为500 mg/L的条件下,废水的COD去除率为96.98%,Cu2+为99.91%,N i2+为99.92%,处理水完全达到国家一级排放标准。同时依据GC/MS对X-GN降解最终产物的分析结果,推导出废水的基本降解机理和途径。
Treatment of refractory complexing copper and nickel wastewater by Fenton oxidation-coagulation process has been carried out. The effects of initial pH on wastewater, H2O2 doses, [ Fe^2＋]/[ H2O2 ], reaction time, temperature, pH and mass concentration for coagulation were investigated. The optimistic conditions are determined. 96.98% of COD,99.91% of copper and 99.92% of nickel removal were achieved at pH =4, [H2O2] =800mg/L, [Fe^2 ＋]/[ H2O2] =0.1, T=30℃, t=60 min, pH and mass concentration for coagulation were 8 and 500 mg/L, the treated water reached the first-grade national discharge standard. Possible mechanism and pathway of the reaction was proposed on the basis of experimental results, the final product produced during the reaction was detected by GC-MS spectra.
出处
《环境污染治理技术与设备》
CSCD
北大核心
2006年第5期119-123,共5页
Techniques and Equipment for Environmental Pollution Control
基金
中日合作丰田基金资助项目(ToyotaFundD01-B3-010)
关键词
铜镍废水
FENTON
混凝
copper and nickel wastewater
Fenton
coagulation
作者简介
钱湛（1980～）,男,硕士研究生,主要从事水污染控制研究工作.E-mail：zanzanjimao@163.com
