摘要
通过对传统工艺中的普通滤池进行生物强化 ,可以使原水中氨氮 (NH3-N)的去除率由原来的 30 %～ 4 0 %提高到 93% ,亚硝酸盐氮 (NO- 2 -N)的去除率由零提高到 95% ,有机物(CODMn)的去除率由 2 0 %提高到 4 0 %左右 ,出水浊度保证在 1NTU以下 ,经消毒后能满足卫生学指标的要求。经长期运行测定 ,在滤速 1 0m/h、反冲洗 ( 1～ 2次 ) /d情况下依然保持良好的处理效果。该技术不增加任何新设施 ,只是强化现有工艺 ,是解决微污染源水水质的一项新途径。
Biological enhancement of ordinary filter in the conventional process was studied. The results showed that removal rate of ammonia nitrogen raised to 93% from 30%～40%, that of nitrite raised to 95% from zero and that of organic matter (COD Mn ) raised to about 40% from about 20%. Turbidity of filtered water was assured below 1 NTU and could meet the requirement of sanitary index after disinfection. Through a long operating time, the treatment efficiency of the system still kept high at filtration rate of 10 m/h and backwash frequency of 1～2 time/d. Only enhancing the conventional treatment process, the new process is a way to deal with micro-polluted source water without increasing any equipment.
出处
《中国给水排水》
CAS
CSCD
北大核心
2000年第10期18-20,共3页
China Water & Wastewater
基金
广东省自然科学基金资助项目
关键词
微污染源水
净化
普通滤池
生物强化过滤
micro-polluted water
purification
conventional filter
biologically enhanced filtration
