精馏法处理高浓度有机氰废水技术研究

在考察国内含氰废水处理现状和研究部分处理方法的基础上,综合国内外有关文献,针对丙烯腈一段急冷水这一高浓度有机氰废水,建立了一种新的处理方法-精馏法.对处理前后废水的CODcr、BOD5、氰化物浓度、不同稀释比的生化曲线及有机物可生化性进行了细致分析.结果表明,废水经过处理后,CODCr去除率高达95.2%,BOD5/CODcr由原来的0.15变为0.31,废水的可生化性得到改善.通过对轻组分及重组分的回收利用,可创造的直接经济效益达到30龛万元·a-1.该方法简便、实用,具有良好的环境效益和经济效益.

Study on rectifying Treatment Technology of Wastewater Containing High Concentrated Organic CN-

A new method treating the first section of quenching water in AN production , the wastewater containing high concentrated organic CN, had been developed after some stuff about this field was referenced in the article. The wastewater quality (such as CODcr?BOD 5 and the concentration of CN -) and curves of microbe breathing in different dilution ration before and after treatment and biochemical performance of organic matter were analyzed carefully. The removing rate of CODcr was 95.2 %, the ratio of BOD 5/CODcr changed from 0.15 to 0.31. The waste water's biochemical performance was improved. Direct economic profits reached more 300 million yuan/year with the recycling of light-constituents and heavy-constituents. The method was convenient , practical, economic and had good environmental and economic benefits.