生物氧化结合臭氧消毒生活饮用水净化处理的效果

目的：研究生物氧化结合臭氧消毒的方法对生活饮用水深度净化处理的效果。方法：二次供水经生物滤池、活性炭柱及臭氧消毒，处理前后分别取水测定水中氨氮、亚硝酸盐氮、硝酸盐氮、细菌总数及总大肠菌群等指标的含量，观察二次供水经不同阶段技术处理后，水质的变化情况。结果：二次供水经生物滤池处理后，氨氮的去除率为98．92％，亚硝酸盐氮的去除率为99．40％，硝酸盐氮略有增加，但仍在生活饮用水卫生标准允许的范围之内。二次供水经不同阶段净化处理后，细菌总数由处理前的超标到处理后符合饮用水卫生标准。水质其他指标处理前后基本不变。结论：生物氧化结合臭氧消毒的方法对二次供水中的氨氮、亚硝酸盐氮及细菌总数有很好的去除作用。

EFFECT OF BIO-OXIDIZING COMBINED WITH OZONE TO PURIFY DRINKABLE WATER

Objective:To study effect of bio-oxidizing combined with ozone to purify drinkable w ater is reported in this paper Methods:Before and after the biolo gical filter, active c harcoal post and ozone treatment, the percentage of ammonia nitrogen, nitrate ni trogen, coliform bacteria and the number of bacterium are recorded to reflect th e changes of water quality during different stages of processes Results:Ammonia nitrogen is reduced to less than 1 08%, inferior nitrate nitro g en is reduced to less than 0 60% after processing with biological filter Even t hough there is slight increase of nitrate nitrogen after processing, processed water still could meet the standard of drinkable water Conclusion: Multiple sta ge of purification will greatly reduce the total amount of bacterium inside wate r and be very helpful for processed water to pass the check based on drinkable w ater standard