| 固定化硝化菌去除废水中氨氮工艺的研究 |
| 摘要点击 2538 全文点击 2723 投稿时间：1998-05-23 |
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| 中文关键词 固定化 硝化菌 废水处理 氨氮 流化床 循序间歇活性污泥法 |
| 英文关键词 immobilization nitrobacteria wastewater treatment removal of nitrogen Fluidized Bed Reactor(FBR) Sequencing Batch Reactors(SBR) |
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| 中文摘要 |
| 采用聚乙烯醇(PVA)-硼酸包埋固定化法,选用PVA为包埋载体,粉末活性炭作为无机载体,包埋固定A/O生物脱氮系统中的再经驯化过的硝化污泥,制成固定化硝化菌颗粒。以流化床作为生物反应器,采用SBR运行方式对人工配制含氮废水进行处理试验。结果表明：固定化硝化菌寿命长达7个月以上;固定化硝化菌的呼吸活性由开始时的10.3mg/(L·h),最终达420mg/(L·h)左右;NH4-N去除负荷为240mg/(L·h);当颗粒填充率为4%,进水NH4-N浓度为35mg/L和65mg/L,反应时间分别为5h和9h时,NH4-N去除率皆可达99%以上;当进水COD浓度为230mg/L左右,NH4-N浓度为35mg/L左右,反应时间为4h,COD去除率在86%左右,NH4-N去除率维持在90%左右。用扫描电子显微镜对固定化硝化菌菌群的生长及分布情况进行了观察。 |
| 英文摘要 |
| The immobilized microbes pellets were made from entrapping cultivated nitrifying activated sludge using polyvinyl alcohol(PVA)crosslinked with boric acid,PVA is entrapment carrier and powdered activated carbon is inorganic carrier.The source of nitrifying activated sludge come from A/O system.In biological fluidized bed reactor(BFBR),Sequencing Batch Reactors (SBR) system treating composed NH4-N wastewater was carried out.The experiment results were as follows:the immobilized nitrobacteria's life was more than seven months;the oxygen using rate(OUR)recovered from 10.3mg/(L·h) to 420mg/(L·h);the NH4-N removal loading could reach 240 mg/(L·h).While the immobilized nitrobacteria pellets package percentage was 4%,influent NH4-N concentration was 35 mg/L,reaction time was 5h,the NH4-N removal efficiency reach 99%;influent NH4-N concentration was about 65 mg/L,reaction time was 9h,the NH4-N removal efficiency also reach 99%.When the influent COD is about 230 mg/L,NH4-N is about 35mg/L,reaction time was 4h,the COD removal efficiency could reach 80%,the NH4-N removal efficiency always kept 90% or so.In this research,the situation of microbe growth and distribution of immobilized nitrobacteria was observed with scanning electron microscope. |
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