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A1-A2-O1-O2工艺A1-A2段处理焦化废水试验研究
Study on the A1-A2 Stage in Coke Plant Wastewater Treatment by A1-A2-O1-O2 Technology
【作者】 冯海军;
【导师】 杨云龙;
【作者基本信息】 太原理工大学 , 环境工程, 2006, 硕士
【摘要】 焦化废水由于含有大量的难生物降解与有毒物质,因而成为公认难处理工业废水之一。不经处理直接排放会对水体产生严重的污染,即使处理但没有达标也会对水体产生不良的后果。目前对焦化废水的处理方法主要分为两类:“非破坏性”技术,即分离法,包括沉淀法、吸附法等;“破坏性”技术,即氧化分解法,包括高级氧化法与生物氧化法。考虑到经济方面的因素,当前还是以生物氧化法为主。 本课题以焦化废水为研究对象,首先分别为A1(水解酸化)-A2(缺氧反硝化)-O1(一段接触氧化法)-O2(二段接触氧化法)工艺的A1、A2反应器培养、驯化适于本试验的生物膜,在一个多月的时间里完成了挂膜工作。反应器启动后,开始研究A1、A2段微生物对焦化废水中COD和NH3—N的降解特性及pH值、温度、进水浓度等环境因素对降解过程的影响,并通过试验结果的分析,确定工艺A1、A2段的最佳运行参数和控制条件。 通过对试验结果的分析,初步确定厌氧反应器最佳运行控制参数为:pH值范围为6.0~8.0;温度为24.0℃左右;水力停留时间为8h;进水COD浓度1100mg/L左右;DO应小于0.2 mg/L;缺氧反应器最佳运行控
【Abstract】 Because coke sewage contains lots of hard-biodegraded and toxicant substances, it is considered one of the industrial waste water which is difficult to purify. Drainage of coke sewage without purify could result in the serious pollution in waterbody, and even the purified coke sewage but failed to reach standard could also do harm to waterbody. Now there are two kinds of treatments of coke sewage:" non-destroyed" technology, namely separate methods, including precipitation, adsorption and so on; "destroyed" technology, namely oxidation and decompounding methods, including senior oxidation and bio-oxidation. Considering economy value, the bio-oxidation is still dominant currently.This experiment aimed at coke sewage, first cultivated and acclimated bio-organism membrane for the A1 and A2 stage in A1 (hydrolyze-acidification) -A2 (anoxia de-nitration) -O1 (the first contact oxidation) -O2 (the second contact oxidation) technology and the membrane is mature in more than one month. After the start-up of the reactor, micro-organism’s degradation trait to COD and NH3—N in A1, A2 and such environmental factors’ influence as pH value, temperature and influent
- 【网络出版投稿人】 太原理工大学 【网络出版年期】2006年 11期
- 【分类号】X784
- 【被引频次】5
- 【下载频次】202