LIPeng-fei,QIUShao-long,ZHAODe-jiang,et al.easures of Algal Growth Inhibition in High-efficiency Sedimentation Tank by Photovoltaic and Backwash Composite Process[J].China Water & Wastewater,2023,39(4):81-85.
easures of Algal Growth Inhibition in High-efficiency Sedimentation Tank by Photovoltaic and Backwash Composite Process
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第39卷
Number:
第4期
Page:
81-85
Column:
Date of publication:
2023-02-17
- Keywords:
- wastewater treatment plant; high-efficiency sedimentation tank; distributed photovoltaic; gas backwashing; algal
- Abstract:
- Due to the special design structure and hydraulic conditions, a large number of algae are prone to grow on the surface of the high-efficiency sedimentation tank and the surrounding inclined tubes, which will not only block the inclined tube, reduce the sedimentation efficiency, and increase the operating cost, but also cause some effluent indicators to fail to meet the standards. In order to solve such problems and improve the sedimentation effect, the photovoltaic and backwash composite process has been designed and developed. By optimizing the illumination angle and erection mode of the distributed photovoltaic panels, direct sunlight is avoided on the surface of the high-efficiency sedimentation tank to the greatest extent, which effectively inhibits the growth of algae in the pool. In addition, the integrated backwash system such as air source, regulating valve, and automatic control system is constructed to form a backwashing scheme with simple operation, high efficiency, controllable effect and low cost, which can completely remove the attached algae remaining on the inclined pipe. Since the implementation of the photovoltaic and backwash composite process system, the algae adhesion on the surface of the high-efficiency sedimentation tank and the surrounding inclined tubes has basically disappeared, and the annual power generation of the photovoltaic system in this area has reached 573 000 kW·h, which has generally reduced operating costs.
Last Update:
2023-02-17