| 70℃高温水解/厌氧/好氧/BAC工艺处理高浓度有机废水 |
| 摘要点击 1725 全文点击 1621 投稿时间：2004-11-24 修订日期：2005-01-13 |
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| 中文关键词 高温(70℃) 两相厌氧 好氧 BAC |
| 英文关键词 extreme thermophilic(70℃) two-phase anaerobic activated sludge bio-activated charcoal |
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| 中文摘要 |
| 采用70℃高温水解酸化、高温厌氧、高温好氧、高温生物活性碳(BAC)组合工艺,对玉米深加工行业的高温工艺废水进行分相与分段处理研究,分别对COD、VFA、氨基酸等的去除处理效果进行研究和评价,在高温条件下完成高温高浓度有机废水的处理并达到回用热水、节能目的.结果表明:组合工艺系统对高浓度有机废水COD总去除率达到99.62%,VFA和氨基酸均为100%,出水COD<50mg/L,达到中水回用COD标准值,其中水解酸化相COD去除率占总去除率的49.7%,产甲烷相占33.7%,好氧段占14.5%,BAC段占1.1%;厌氧段占VFA总去除的56%,好氧段为21.2%,BAC段为21.8%;厌氧段占氨基酸总去除的34.8%,好氧段占62%,BAC段占3%.其中水解酸化有机负荷达到36.2kg/(m3·d).高温好氧和BAC组合工艺进水COD 3 500mg/L条件下,COD去除率仍能达到95.8%.整个系统运行平稳,抗冲负荷强,各段出水pH均在6.6～7.5之间波动. |
| 英文摘要 |
| This study was conducted to investigate the performance of combining two-phase anaerobic(TPA)/activated sludge(AS)/bio-activated charcoal(BAC),seeded with mesophilic sludge,for treating food wastewater at extreme temperature(70℃) to allow treated water to be reused for closed heat water circuits.The system had a total hydraulic retention time of 42h.Reactor performance was characterized by COD,VFA,pH,amino-acid.An overall COD treatment efficiency of 99.62%,VFA and amino-acide of 100% and pH between 6.6～7.5 were observed for the system.COD removal of acidification phase,methane phase,activated sludge and BAC was 49.7%,33.7%,14.5%,and 1.1%,respectively.VFA removal of methane phase,activated sludge and BAC was 56%,21.2% and 21.8%,respectively.Amino-acid removal of methane phase,activated sludge and BAC was 34.8%,62% and 3%,respectively.COD concentration of effluent in the system was lower than 50mg/L.An additional experiments show that activated sludge and bio-activated charcoal at 70℃ may allow COD concentration of influent up to 3 500mg/L and COD removal was up to 95.8% at high organic loading 4.5kg/(m3·d) with aerobic condition. |
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