Numerical Study on the Influence of Tidal Inlet Restoration on Water Exchange in Wanning Lagoon

Wanning Xiaohai is the largest lagoon in Hainan Province. In recent years, body of water has been polluted due to untreated discharge domestic sewage and aquaculture tailwater directly into Xiaohai. order improve quality relieve pressure on environment, it was decided restore tidal inlet this study, module finite volume ocean model applied simulate change pollution concentration using Eulerian advection diffusion equation analyze half life time prism before after restoration project inlet. The research results showed that inlet, changed from 64 d 58 d, shortened by 6 increased 8.8×10 m 3 9.6×10 , which can well enhance exchange between external bodies, environment.