PENG Jin-hu,HE Sun-wei,CHEN Li-zhu,et al.Filtration Performance and Operation Effect of Fine Sand Filter[J].China Water & Wastewater,2021,37(1 1):40-45.
Filtration Performance and Operation Effect of Fine Sand Filter
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第37卷
Number:
1 1
Page:
40-45
Column:
Date of publication:
2021-01-01
- Keywords:
- fine sand; filtration; quality of filtered water; turbidity
- Abstract:
- In view of selection of quartz sand particle size for improving the quality of filtered water, the filtration performance of two kinds of quartz sand with different particle size distribution was studied by pilot test, and the feasibility of using fine sand was discussed. Turbidity in water filtered by fine sand was lower, and the sudden water quality problem with high turbidity could be solved. Fine sand had a significant retention effect on invertebrate zooplankton, and could effectively deal with biological risk of small size organisms such as rotifers. The fine sand could also maintain and improve the removal capacity of organic matters and ammonia nitrogen. The head loss of fine sand increased faster, and the operation time could be effectively prolonged by reducing turbidity in influent. Compared with other advanced treatment processes, the fine sand filter had part of membrane treatment function, and did not need to increase the footprint area of a water treatment plant.
Last Update:
2021-01-01