曝气生物滤池去除二级出水中NH3-N的试验研究
收稿日期: 2005-08-26
网络出版日期: 2010-10-01
Study on the treatment of ammonia nitrogen secondary effluent with the biological aerated filter
Received date: 2005-08-26
Online published: 2010-10-01
采用曝气生物滤池工艺对燕化公司西区污水处理场的二级出水进行了处理,研究了进水NH3-N浓度、COD浓度、m(COD)∶m(NH3-N)、碱度及气水比对NH3-N去除效果的影响。试验结果表明,当进水NH3-N质量浓度小于30mg/L时,曝气生物滤池对NH3-N具有良好的去除作用,平均NH3-N去除率达到90.4%,出水NH3-N质量浓度可降至1mg/L以下。NH3-N去除率随进水m(COD)∶m(NH3-N)的增加而降低;当进水m(COD)∶m(NH3-N)小于2.0时,NH3-N去除率达到90%以上。在进水碱度约为290mg/L和气水比为3∶1的工艺条件下运行,系统可获得较高的NH3-N去除率。
王岽, 郦和生, 刘德华 . 曝气生物滤池去除二级出水中NH3-N的试验研究[J]. 工业水处理, 2005 , 25(12) : 47 -49 . DOI: 10.11894/1005-829x.2005.25(12).47
Secondary effluent of West Zone Wastewater Treatment Plant of Yanshan Petrochemical Co.has been treated with the biological aerated filter process.Its effects on NH3-N removal of NH3-N and COD concentration,COD/NH3-N ratio and alkalinity of influent and the ratio of gas and water of the system are studied.The results showthat biological aerated filter could remove NH3-N perfectly when NH3-N concentration of influent is below 30mg/L.The average NH3-N removal efficiency eaches 90.4%,and NH3-N concentration of effluent is below 1mg/L.NH3-N removal efficiency decreases with the increase of COD/NH3-N ratio of influent and is higher when COD/NH3-N ratio is below2.0.Higher NH3-N removal efficiency has been got by using the process with alkalinity approximately being 290mg/L and the ratio of air and water being 3∶1.
Key words: biologicalaeratedfilter; secondaryeffluent; ammonia nitrogen
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