曝气生物滤池生物强化法处理重污染河水  

Treatment of high-contamination river water using bioaugmentation biological aerated filter(BAF)

作　　者：张文艺[1] 翟建平[1] 李琴[1] 郑俊[2] 

机构地区：[1]南京大学污染控制与资源化研究国家重点实验室环境学院,南京210093 [2]安徽工业大学环境工程系,安徽马鞍山243002

出　　处：《哈尔滨工业大学学报》2006年第11期1857-1860,1864,共5页Journal of Harbin Institute of Technology

基　　金：安徽省自然科学基金资助项目(01045302);安徽省教育厅自然科学基金资助项目(2004KJ067);安徽省优秀青年教师基金资助项目(2003jq132)

摘　　要：利用曝气生物滤池(BAF)工艺,对重污染河水进行生物强化处理试验.分别考察温度、滤速、pH、污泥负荷等因素对原水中高锰酸盐指数(CODMn)、浊度等主要水质指标的去除效果.结果表明,温度、pH、滤速等是影响BAF工艺处理重污染河水的敏感因子.同时还揭示出BAF能有效地去除原水中绝大多数细菌,去除率可达到90%以上.BAF处理重污染河水适宜的工艺参数为:气水比0.5~1.0,反冲洗周期为3~5 d,气、水联合反冲洗,反冲洗强度均为5~8 L/(m2.s),反冲洗时间为10~15 m in,温度23~30℃,pH值7.0~8.5,污泥负荷0.2~0.6 kgCODMn/(kgMLSS.d),滤速1.5~4.5 m3/(h.m2).连续运行结果表明,在此工艺参数下,BAF对重污染河水中的浊度、CODMn、氨氮、细菌的平均去除率分别为89.3%、87.3%、94.6%、96.7%,出水水质达到了地表水环境质量标准(GB3838-2002)中的基本项目目标限值中的I^II级标准,可作为工业生产用水,实现了重污染河水资源化.Tests has been carried out on treating high-contamination river water using biological aerated filter（BAF） process. The influence of temperature, filter rate, pH value, etc on the removal effect of BAF for turbidity and permanganate index（CODMn）in the water was studied. Results revealed that temperature, filter rate, pH value were the key sensitive factors of BAF process for treating high-contamination river water. Meanwhile results showed that BAF had the ability of removing most bacteria of the water, and the removal ratio was up to 90%. The best parameters of BAF for treating high-contamination river water were ： gases/water =0.5 - 1. 0, backwash cycle =3 -5 d, the backwash intensity of gases/water =5 -8 L/（m^2 · s）, backwash run time =10-15 min, temperature =23 -30 ℃, pH value =7.0-8.5, sludge loading = 0. 2 - 0. 6 kgCODMn/（ kgMLSS ·d ）, and filter rate = 1.5 - 4. 5 m^3（ h · m^2 ）. Continual running showed that, under these conditions, the removal ratio of turbidity, permeganate index （CODMn）, ammonia nitrogen and bacteria were up to 89. 3% ,87. 3% ,94. 6% and 96 7% respectively, and the effluent water can meet Grade Ⅰ - Ⅱ of the Environment Quality Standards for Surface（GB3838 -20（12）, which ean be used for industrial production.

关 键 词：曝气生物滤池 重污染河水 生物强化法 高锰酸盐指数 浊度 

分 类 号：TU991.2[建筑科学—市政工程]