HUANGXiao-long,CHENWen-feng,FENGLi-hui,et al.Performance of Pneumatic Coagulation Combined with Phoslock for Algae Control[J].China Water & Wastewater,2023,39(15):75-80.
Performance of Pneumatic Coagulation Combined with Phoslock for Algae Control
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第39卷
Number:
第15期
Page:
75-80
Column:
Date of publication:
2023-08-01
- Keywords:
- pneumatic coagulation; diatomite; Phoslock; algae removal
- Abstract:
- This paper evaluated the algae removal and control performances of pneumatic coagulation combined with Phoslock through indoor experiments and in situ application analysis. Diatomite effectively improved the cyanobacteria flocculation and precipitation performance of polyaluminum chloride (PAC). Pneumatic mixing could replace mechanical agitation for algae coagulation and sedimentation in water. The higher aeration intensity and shorter aeration time could obtain a better algae removal performance. When the aeration rate reached 2 L/(L·min) and the aeration time was 15 s, the removal rate of chlorophyll a was more than 80%. The in situ application showed that the concentration of chlorophyll a in water decreased continuously after treated by the combination of pneumatic coagulation and Phoslock, and the removal rate of chlorophyll a was up to 97.7%. Therefore, pneumatic coagulation is an effective approach for rapid removal of algae from water, and its combination with Phoslock can achieve long-term algal control.
Last Update:
2023-08-01