| 生物接触氧化法净化微污染原水的机理研究 |
| 摘要点击 1038 全文点击 2755 投稿时间：1998-10-18 |
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| 中文关键词 微污染原水 生物接触氧化 净水工艺 硝化 好氧微生物 机理 |
| 英文关键词 micropolluted raw water biological contact oxidation nitrification water purification process mechanism aerobes |
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| 中文摘要 |
| 在姚江水质为pH6.8～7.4、浊度9～20NTU、色度25～37度、NH4+-N 1.0～9.0mg/L、NO2--N 0.075～0.25mg/L和CODMn8～18.9mg/L的条件下,进行了生物接触氧化法预处理微污染原水的除污染作用机理研究。结果表明,生化池进水处填料层生物膜厚度为0.3～0.5mm,出水处填料层膜厚为0.1～0.3mm,仅为污水处理中普通生物膜厚的1/10左右。当水中溶解氧控制在7～9mg/L时,填料上生物膜全是好气层,无厌氧层存在。生物接触氧化法净水过程是一个高度综合、高度好氧的生物作用过程,包括生物膜吸附,生物絮凝,有机物的生物降解及氨氮的显着硝化等作用。生物膜上的细菌主要是高好氧贫营养性微生物。 |
| 英文摘要 |
| The mechanism of pollutants removal in pretreating the micropolluted raw water by biological contact oxidation process(BCOP)has been studied under the condition of pH6.8-7.4,turbidity 9～20NTU,colorization 25～37 degree,NH4+-N 1.0～9.0mg/L,NO2-N 0.075～0.25mg/L and CODMn 8～18.9mg/L for raw water in Yao River.The research results show the thickness of the biological membrane on the packing in the water entrance of biological contact oxidation tank is 0.3～0.5mm and is 0.1～0.3mm in the water effluence,and is only about 1/10 of that of the ordinary biological membrane in the wastewater treatment.The biological membrane is almost aerobe layer and no anaerobes under the DO 7～9mg/L of the micropolluted water in the biological contact oxidation tank.This water purification process by BCOP is a highly comprehensive and aerated biological action process,which includes biological adsorption,biological flocculation,biodegradation of organics and notable nitrification of NH3-N,etc.The primary bacterium in the biofilm is malnourished aerobes. |
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