滤料粒径对地下水中铁、锰、氨氮、浊度去除效果的影响
中国给水排水[ISSN:1000-4062/CN:12-1073/TU]
卷:
第36卷
期数:
2020年第7期
页码:
47-51
栏目:
出版日期:
2020-04-01
- Title:
- Effect of Filter Material Size on Removal Efficiency of Iron, Manganese, Ammonia and Turbidity in Groundwater
- Keywords:
- biofilter; filter material size; groundwater; iron; manganese; ammonia; turbidity
- 摘要:
- 滤料粒径是生物滤池设计的一个重要参数。采用滤料粒径分别为0.8~1.0、3~4、8~10 mm的3根成熟生物滤柱处理地下水，考察滤料粒径对铁、锰、氨氮、浊度去除效果的影响。结果表明，1#、2#、3#滤柱出水的总铁平均浓度分别为0.020、0.037、0.078 mg/L，锰平均浓度分别为0.003 0、0.005 1、0.006 7 mg/L，氨氮平均浓度分别为0.022、0.030、0.050 mg/L，浊度均值分别为0.28、0.69、1.32 NTU，除3#滤柱出水浊度不达标外，其余指标均满足国家标准。随着滤料粒径的增大，铁、锰、氨氮的沿程浓度明显升高，去除区域向下延伸，浊度主要在0～0.4 m滤层被去除。
- Abstract:
- Filter material size is one of the most critical parameters in the design of biofilters. Effects of filter material size on the removal efficiency of iron, manganese, ammonia and turbidity were investigated in three mature biofilters with filter material size of 0.8-1.0 mm, 3-4 mm, 8-10 mm, respectively. The average concentration of total iron in the effluent of 1#，2# and 3# biofilter was 0.020 mg/L, 0.037 mg/L and 0.078 mg/L respectively, the average concentration of manganese was 0.003 0 mg/L, 0.005 1 mg/L and 0.006 7 mg/L respectively, the average concentration of ammonia was 0.022 mg/L, 0.030 mg/L and 0.050 mg/L respectively, and the average concentration of turbidity was 0.28 NTU, 0.69 NTU and 1.32 NTU respectively. Except for effluent turbidity of the 3# biofilter, all other indexes reached the national standard. With the increase of filter material size, the concentration of total iron, manganese, ammonia and turbidity increased obviously along the biofilter depth, and the removal area extended downward. Turbidity was mainly removed in the 0-0.4 m layer of the biofilter．
更新日期/Last Update:
2020-04-01