作　　者： ; ; ; ;

机构地区： 哈尔滨工业大学市政环境工程学院

出　　处： 《环境科学》 2004年第6期117-122,共6页

摘　　要： 在投加营养物质 ,保持COD∶TN∶TP =10 0∶5∶1的条件下 ,淹没式MBR对合成啤酒废水中的COD、NH+ 4 N有着较好的去除效果 ,系统稳定时COD与NH+ 4 N的平均去除率均在 90 %以上 ,而且MBR工艺对进水有机负荷的冲击具有较强的短时适应能力 ,当COD污泥负荷率由 0 2 7g/ (g·d)突然增加至 0 5 4 g/ (g·d)时 ,出水COD浓度未出现明显的波动 .通过GC/MS分析得出 ,膜组件出水中剩余的有机物主要为高分子量的烷烃类 ,膜组件对于保证系统的最终出水水质起到了关键的作用 .当反应器中的污泥处于增长期时 ,在生物同化作用与同步硝化 反硝化共同作用下 ,使得TN具有 4 0 %左右的去除效果 ,当污泥浓度处于稳定期时 ,TN去除率下降为 30 %左右 ,主要是同步硝化 反硝化的结果 .当污泥处于增长期时 ,通过生物同化作用对TP具有一定的去除效果 ,而当污泥浓度稳定后 ,对TP基本没有去除效果 。 Under the condition of keeping the influent COD∶TN∶TP=100∶5∶1, submerged MBR has an excellent treatment performance for COD and NH + 4-N, and the removals for COD and NH + 4-N are both beyond 90% under steady state, in addition, MBR has a strong adaptation ability for shock organics loading rate. When the organic loading rate was increased from 0.27g/(g·d) to 0.54g/(g·d) suddenly, there was no big fluctuation for COD in effluent. According to the results of GC/MS, the remaining organics in effluent was mainly alkyl hydrocarbon, and the membrane modules played a main role in stabling permeation quality. When the sludge in MBR was at the multiplication stage, the system has a removal of about 40% for TN because of biosynthesis and simultaneous nitrification and de-nitrification, in addition, a certain removal for TP was also observed. When the sludge was at the steady stage, the removal for TN decreased to about 30% due to simultaneous nitrification and de-nitrification, whereas, the removal efficiency for TP was very little, and sometimes even below zero.

关 键 词： 淹没式 啤酒废水 冲击负荷 同步硝化 反硝化

领　　域： [环境科学与工程]