Hydraulic Downward Opening Weir Gate
Case Study
Tang Lake
Project Overview：
Tanghu is located in the Economic and Technological Development Zone of Wuhan City, Hubei Province, with a watershed area of 6.15 km² and a water area of 1.05 km².
Issues:
- Numerous outlets lead to the problems of direct discharge and overflow pollution of sewage.
- The pipe network is disordered with serious misconnections.
Solution:
- Retrofitting of outlets for pollution interception and diversion.
- Pollution interception and diversion retrofitting in residential areas.
- Pollution interception and diversion retrofitting in industrial areas.
- Pollution interception and diversion retrofitting in convergence areas.
- Water ecological construction. Smart drainage system construction.
- Intelligent maintenance and operation.
before:
- Water quality is classified as Grade V
- black and odorous water body
- Blue-green algae outbreak
- Numerous outlets
- Surface source pollution has not been addressed
- Serious network mismanagement
- Direct discharge of sewage on sunny days
after:
- Some areas as Grade III
- Aquatic plants and fish
- Water is clear and the bottom is visible
- No water replacement has been carried out
- Pollution sources have not been relocated
- No reversal of black and odorous conditions
- Continuous improvement is evident
