| 添加原水改善SBR工艺处理猪场废水厌氧消化液性能 |
| 摘要点击 2782 全文点击 2033 投稿时间：2004-10-09 修订日期：2004-11-01 |
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| 中文关键词 猪场废水 厌氧消化液 SBR 配原水 硝化 反硝化 |
| 英文关键词 piggery wastewater digested piggery wastewater sequencing batch reactor(SBR) addition of raw wastewater nitrification denitrification |
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| 中文摘要 |
| 采用序批式反应器(SBR)工艺直接处理猪场废水厌氧消化液,处理系统的效率较低,COD去除率仅有10%左右,NH4+-N去除率70%左右;处理出水水质较差,出水COD高于1 000mg/L,出水NH4+-N在200mg/L左右;处理系统的工作不稳定,效能逐渐恶化.在猪场废水厌氧消化液中添加部分未经厌氧消化的猪场废水(原水),处理系统的处理效率明显提高,COD去除率高于80%,出水COD降到250～350mg/L;NH4+-N去除率高于99%,出水NH4+-N小于10mg/L;处理系统的稳定性也得到增强.添加原水后,猪场废水厌氧消化液的BOD5/COD比值从0.19上升到0.54,BOD5/TN比值从0.28上升到2.04,增加了微生物生长和反硝化所需的碳源,强化了反硝化作用,不仅提高了总氮去除效率,而且通过回补碱度,维持了处理系统的pH值稳定. |
| 英文摘要 |
| When digested piggery wastewater was directly treated with a sequencing batch reactor(SBR) process,the efficiency was low with COD removal about 10% and NH4+-N removal about 70%.The effluent COD concentration was higher than 1 000mg/L and effluent NH4+-N concentration was 200mg/L or so.The working state of the reactor was unstable and its performance deteriorated gradually during operation.After adding no-digested piggery wastewater(raw wastewater) to digested piggery wastewater in the influent,the reactor performance was significantly improved with COD removal higher than 80% and NH4+-N removal up to 99%.The effluent COD concentration was in the range of 250 mg/L to 350mg/L and effluent NH4+-N concentration was lower than 10m/L.The working stability of the reactor was greatly increased. After adding raw wastewater,the ratio of BOD5 to COD in the influent was raised from 0.19 to 0.54,and the ratio of BOD5 to TN was raised from 0.28 to 2.04, which implied an increase of carbon source for microbial growth and denitrification.The elevated denitrification resulting from the increase of carbon source not only promoted the removal of total nitrogen,but also stabilized the pH value by supplementing alkalinity to treatment system. |
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