电化学氧化处理腈纶废水及水质指标相关性

采用电化学氧化技术处理腈纶厂生化池废水,运用国标测试方法对COD、氨氮、色度和氯离子等4项指标进行了分析。结果表明:色度得到有效降低,氨氮、COD得到有效去除。其中,氨氮的去除率达100%,色度降低幅度99%,COD去除率可达89%,氯离子的质量浓度亦可以降至国家一级排放标准,说明电化学氧化技术具有良好的应用前景。通过分析可知:色度在5min内能得到有效降低,氨氮在30min内能得到有效去除,且氨氮的去除速率是电解电压的一次函数;氯离子在溶液中的反应呈现一级反应的特征;COD的去除速率常数与氯离子的去除速率常数具有良好的相关性。这一结果对电化学氧化反应器的设计和工业化运行具有指导性意义。

Electrochemical Oxidation Process of Acrylic Fiber Wastewater and Quality Correlation Index

This research is mainly about the electrochemical oxidation technology for the treatment of waste water from biochemical pool of the acrlic fiber company,using the national standard test method for COD,NH3-N,chroma and chlorion as four indicators for analysis.The results show that chroma,ammonia nitrogen and COD can be effectively removed in the process of electrolysis.Among them,ammonia nitrogen removal rate is up to 100%,while the chroma removal rate is up to 99%,and COD removal rate is up to 89%.After the completion of the reaction,chlorion content also can be reduced to a national level of discharging standard,which indicates that electrochemical catalytic oxidation technology has a rather good application prospect.Through the analysis,we can make a conclusion that chroma and ammonia nitrogen can be completely removed within 10 min and 30 min respectively.The ammonia nitrogen removal rate is a function of electrolytic voltage,and chlorion has response characteristics of the first order reaction,COD removal rate constant and chlorions removal rate constant has a good correlation.This will be instructive for the design of electrochemical oxidation reactor and industrial operation.