Dilution Diffusion Model Research of Offshore Deep-sea Discharge in Coastal Area

Abstract

Abstract The sewage diffusion effect under deep water was carried out between different diffuser design parameters based on the hydraulic model test. According to the test of diffuser length, riser spacing, riser number, riser nozzle number, horizontal azimuth angle and jet angle, the specific parameters of diffuser need to be determined comprehensively considering the water surface sewage field, sewage diffusion degree, project cost, etc. We used a coastal marine disposal project in China as an example. The article analyzes the influence of diffuser technology on the dilution and diffusion of sewage under the condition of large water depth, and puts forward the engineering design schemes of different horizontal azimuth angle, different jet angle and different diffuser length.