SONG Xue-feng,WU Yue-qiang,XU Cheng-jun,et al.Application of Horizontal Tube Sedimentation Tank to Treatment of Reservoir Water with High Algae[J].China Water & Wastewater,2021,37(15 15):41-45.
Application of Horizontal Tube Sedimentation Tank to Treatment of Reservoir Water with High Algae
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第37卷
Number:
15 15
Page:
41-45
Column:
Date of publication:
2021-08-01
- Keywords:
- cyanobacteria bloom; high algae; high turbidity; high organic content; horizontal tube sedimentation tank
- Abstract:
- When cyanobacteria bloom occurs in a shallow reservoir in the alpine region of Northeast China in summer and autumn, the existing process of D water treatment plant with the reservoir as water source could not operate at full capacity and the treatment effect was difficult to be guaranteed. Characteristics of cyanobacteria in raw water and operating status of the existing treatment process were analyzed. A pilot integrated horizontal tube sedimentation separation plant was applied to investigate the removal efficiency of related water quality indexes under the condition of cyanobacteria bloom. When dosage of poly-aluminum silicate chloride (PASC) was 3 mg/L, water treatment capacity was 8 m3/h and hydraulic loading was 20.05 m3/(m2·h), removal efficiencies of turbidity, CODMn, UV254 and algae density by the pilot plant were 98%, 49%, 89% and 95%, respectively. Moreover, the unique structure and material of the pilot plant could effectively avoid the attachment and growth of algae, which has important reference significance for the water treatment plant to safely and smoothly pass the cyanobacteria bloom period.
Last Update:
2021-08-01