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sunxuefei

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高盐度废水属于极难处理废水之一。生物处理技术因其经济、高效而被广泛地应用于污水处理中，但盐度过高时，会破坏微生物的细胞膜和菌体内的酶，对微生物的生长产生抑制作用，从而使废水无法达到理想的处理效果。近年来，国内外很多学者采用生物处理法对高盐度废水进行了研究，一般采用驯化耐盐微生物的方法进行处理。周仓采用两段生物接触氧化法处理含盐浓度为25g/L和35g/L的有机废水，微生物经过驯化后，当进水BOD5<400mg/L时，去除率一般在90%以上。刘伟研究了某化工厂含苯乙酸的高盐废水生物处理，通过将污泥在高盐度环境下进行驯化，培养出具有高降解活性的耐盐污泥。当NaCl浓度为45g/L，容积负荷为1.6kgCOD/（m3•d）时，COD去除率达96%。王征针对海水冲洗厕所产生的高含盐生活污水，采用SBR工艺研究了不同海水盐度的污水中氨氮的去除情况。结果表明，在高盐度污水的生物处理系统中，污泥的驯化是关键的一步。有机物和氨氮的去除率总体上随盐度的增大而降低，但是海水冲厕范围内（海水比例在30%内，盐度为10500mg/L，Cl-为5700mg\L），海水盐度对有机物及氨氮的去除影响不大。

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1楼 2011-01-12 08:32:21

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sunxuefei(金币+50, 翻译EPI+1): 2011-01-12 14:54:13

The wastewater with high salinity was one of the extraordinary hard-treated water. Biological treatment technology was used to treat wastewater due to its lower cost and high efficiency.however,if the salinity was too high,this technic would destroy the cell membrane in microbes and ferment in mycobiont,it could also repress the microbe’s growth attribute to the negative consequences.In recent years,many researchers investigated biological treatment technology to treat high salinity wastewater, they commonly employed Acclimated Salt-tolerant method.For example,Zhou Cang adopted two-stage bio-contact oxidation process to treat organic wastewater with the salinity 25g/L and 35g/L, respectively.When microorganism was acclimated and the water inflow BOD5<400mg/L, the removal rate generally reached to over 90%.Liu Wei investigated the biological treatment for a chemical factory’s wastewater with phenylacetic acid,he trained the salt-tolerant sludge with high degradation activity via putting sludge in a high salinity circumstance to acclimate.When the concentration of NaCl was 45g/L and volume load was1.6kgCOD/（m3•d）, respectively.,the COD removal would be 96% .Wang Zheng explored the High Salinity Domestic Wastewater produced by sea water flushing the toilet ,Using SBR process to survey the ammonia nitrogen removal in different sea water salinity. Results indicated that sludge- activated was the key step in the high salinity wastewater processing system, nevertheless,within the rang of sea water flushing the toilet(sea water proportion<30%,salt content 10500mg/L ,the concentration of Cl- was 5700mg/L ),the salinity would Produce Little Effects on the removal of organic substance and ammonia nitrogen.