LIUQiang,YAOYing,LIUZe-shan,et al.Operational Efficiency of a Novel Upflow Biostyrene Filter in a Conventional Drinking Water Process[J].China Water & Wastewater,2024,40(19):58-63.
Operational Efficiency of a Novel Upflow Biostyrene Filter in a Conventional Drinking Water Process
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第40卷
Number:
第19期
Page:
58-63
Column:
Date of publication:
2024-10-01
- Keywords:
- filter; washing; biostyrene; polystyrene foamed bead; quartz sand
- Abstract:
- A novel pilot-scale upflow biostyrene filter packed with polystyrene foamed beads was employed to treat the lake water in a university campus. The filtration velocity was regulated at 8 m/h, and the variations of turbidity, chroma, CODMn, ammonia nitrogen, and chlorophyll a in the influent and effluent were monitored. The treatment efficiency of this filter was compared with that of a quartz sand filter with a filtration velocity of 7 m/h. Meanwhile, the filtration head loss of the clean filter layer prior to operation and after washing was compared, and the washing method was evaluated. Owing to the excellent uniformity of particle size achieved by the upflow filtration method and polystyrene foamed beads, the novel filter demonstrated a remarkable treatment efficiency on the lake water. The average removal efficiencies of turbidity, chroma, CODMn, ammonia nitrogen, and chlorophyll a were 95.9%, 84.6%, 35.0%, 24.5%, and 75.2% respectively. In contrast to the quartz sand filter, they were increased by 3.3%, 0, 9.0%, 5.6%, and 12.9% respectively. The new flushing approach of “air blowing-emptying-water flushing” was straightforward and effective. The average filtration head loss of the clean filter layer after flushing was 8.1 cm, which was merely 3.8% higher than that before operation.
Last Update:
2024-10-01