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‰.
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)
关键词
气化废水
可生化性
紫外-芬顿
Coal gasification wastewater
Treatment Biodegradability
UV-Fenton
