煤气废水好氧—缺氧—好氧生物处理中试试验研究  

Pilot scale test of coal gasification wastewater treatment by aerobic- anoxic-aerobic biological process

作　　者：张文启[1] 徐菁利[1] 徐美燕[1] 徐子诚[1] 

机构地区：[1]上海工程技术大学化学化工学院,上海201620

出　　处：《工业水处理》2008年第9期14-16,共3页Industrial Water Treatment

基　　金：上海市教委重点资助项目(07ZZ158)

摘　　要：煤气废水生物处理存在的主要问题是系统运行稳定性差、难降解有机物和氨氮去除率低。采用新开发的好氧—缺氧—好氧生物工艺对该类废水进行了现场处理试验。结果表明,系统在入水COD和总酚质量浓度分别为2066.6、406.9mg/L的条件下仍可以稳定运行,去除率分别为87.5%和88.6%,系统对总氨去除率为67.2%;一级好氧单元是酚类物质及COD的主要去除单元,对一元酚的去除率达99.5%,对多元酚去除率为85.3%,另外对氨氮也有35.9%的去除;缺氧单元对总酚和氨均有一定的去除效果;二级好氧单元氨去除率为40.1%。表明该工艺在处理实际煤气废水上具有一定的优越性。The main problem of the biological treatment of coal gasification wastewater is that it is not effective in removing the refractory organics and NH3, and has low running stability. Aerobic （O）-anoxie （A）-aerobic （O）biological process is put forward for the wastewater second treatment. The experiment shows that the new system can still be operated stably when the COD and total phenols concentrations of the influent are as high as 2 066.6 mg/L and 406.9 mg/L respectively. The COD and total phenols removal rates are more than 87.5% and 88.6% respectively. The total ammonia removal rate is 67.2%. The COD and phenols are mainly removed in the first aerobic unit. Its monohydrie phenol removal rate is 85.3% and the total NH3 removal rate is about 35.9% in this unit. The total phenol and ammonia are removed to a certain extent in the anoxic unit. NH3 removal rate is 40.1% in the second aerobic unit. The process shows superiority in the treatment of coal gasification wastewater.

关 键 词：煤气废水 好氧 缺氧 生物处理 

分 类 号：X703.1[环境科学与工程—环境工程]