| 淹没式MBR处理啤酒废水的净化效能 |
| 摘要点击 1840 全文点击 1183 投稿时间：2003-11-12 修订日期：2003-12-26 |
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| 中文关键词 淹没式MBR 啤酒废水 冲击负荷 同步硝化-反硝化 |
| 英文关键词 submerged membrane bioreactor brewery wastewater shock loading simultaneous nitrification and de-nitrification |
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| 中文摘要 |
| 在投加营养物质,保持COD∶TN∶TP=100∶5∶1的条件下,淹没式MBR对合成啤酒废水中的COD、NH4+-N有着较好的去除效果,系统稳定时COD与NH4+-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0.27g/(g·d)突然增加至0.54g/(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40%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,甚至有时出现负去除率现象.
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| 英文摘要 |
| Under the condition of keeping the influent COD∶TN∶TP=100∶5∶1, submerged MBR has an excellent treatment performance for COD and NH4+-N, and the removals for COD and NH4+-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. |
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