紫外-芬顿方法提高两段炉气化废水可生化性的研究  

Using UV-Fenton Treatment to Improve the Biodegradability of Two-Stage Gasification Wastewater

作　　者：杜松 王吉坤 董卫果 高明龙 段峰 付楚芮 

机构地区：[1]煤炭科学技术研究院有限公司,北京100013

出　　处：《新疆环境保护》2015年第3期27-32,共6页Environmental Protection of Xinjiang

基　　金：科研院所技术开发研究专项资助项目(2014EG122191);国家高技术研究发展计划(863计划)(2015AA050501)

摘　　要：两段炉气化是一种比较成熟的煤炭气化工艺，多用于中小城镇煤气生产。两段炉气化废水水质成分复杂，废水中含有高浓度氨氮、酚类、氰化物、喹啉、吡啶、吲哚、呋喃、咪唑、萘、胺类和氯代物等难降解物质，是典型的一类高浓度难降解的有机物废水，其特点是含油高，难降解有机物浓度含量高，毒性很大，以及可生化性极差，通常B／C小于0．1。因此此类废水很难用传统的生化处理工艺进行降解。本文通过采用紫外-芬顿高级氧化方法对两段炉气化废水进行预处理试验研究，发现当氧化剂H202浓度为10％o～30‰时，可较明显地提高废水的可生化性B／C至0．5以上。Abstract：The two-stage gasifier is a relatively mature coal gasification process which was frequently used for SNG production for medium and small towns. The effluent from two-stage gasification is complicated, containing high concentration of non-degradable substance such as ammonia, phenol, cyanide, quinoline, pyridine, indole, furan, imidazole, naphthalene, amines and chlorinated materials etc.. The gasification effluent is a typical high concentration of refractory organic wastewater with characteristics of high oil content, high concentration of organic compounds, high toxicity and poor biodegradability, and its biodegradability value （ B/C ） is always lower than 0. 1. Therefore, it is very difficult to use traditional biological treatment to degrade this kind of wastewater. In this oaoer, the methnd nf UV-Fenton advanced oxidation was used for degradability of wastewater（ B/C ） could the be treatment of the two-stage gasification effluent, it was found that the bio- significantly increased to higher than 0.5 when the oxidant concentration of H2O2 was 10‰-30‰.

关 键 词：气化废水 可生化性 紫外-芬顿 

分 类 号：X784[环境科学与工程—环境工程]