YUANWei-li.Water Ecological Governance, Operation and Maintenance Practice of Yayi Lake in Foshan[J].China Water & Wastewater,2024,40(22):126-130.
Water Ecological Governance, Operation and Maintenance Practice of Yayi Lake in Foshan
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第40卷
Number:
第22期
Page:
126-130
Column:
Date of publication:
2024-11-17
- Keywords:
- water ecological management; engineering measures; operation and maintenance management; water quality improvement
- Abstract:
- Aiming at the ecological degradation and odor resulting from water quality deterioration of Yayi Lake in Foshan, a range of engineering measures, such as pollution source control and sewage interception, endogenous pollution control, water ecological restoration, coagulation micro-filter purification, and ecological water replenishment, have been implemented. In response to challenges such as alien fish species invasion, algal bloom outbreaks, as well as regulation and storage of heavy rainfall during operation, specific prevention and control measures have been undertaken. Through diversified and comprehensive treatment approaches, the water quality of Yayi Lake has significantly improved from level Ⅴ to level Ⅲ in Environmental Quality Standard for Surface Water (GB 3838-2002). Notably, the concentration of COD is now below 14 mg/L; the average DO exceeds 6.22 mg/L， twice as much as before treatment; ammonia nitrogen are below 0.12 mg/L with removal rate no less than 95%; TP concentration is below 0.08 mg/L. As a result of these efforts, the ecological system of Yayi Lake has been restored to its normal state with stable and good water quality.
Last Update:
2024-11-17