CHENZhi-chong,LIQiu-yue,GUHao,et al.Numerical Simulation Optimization of Foam Generator and Its Application in Blocking Odorous Substances[J].China Water & Wastewater,2022,38(23):88-94.
Numerical Simulation Optimization of Foam Generator and Its Application in Blocking Odorous Substances
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第38卷
Number:
第23期
Page:
88-94
Column:
Date of publication:
2022-12-01
- Keywords:
- odorous substance; foam generator; gas-liquid ratio; throat length; FLUENT; numerical simulation
- Abstract:
- Foam spray technology has been applied to control odorous substances releasing from sediment in water bodies, contaminated soil, and non-point sources in sewage treatment plants. However, the previous design of the foam generator was difficult to form homogeneous foam for high-viscosity foaming liquid. In this study, numerical simulation was used to optimize the design of the jet foam generator with a 2 mm aperture outlet porous network. The distribution cloud diagram showed that the inlet pressure has little influence on the gas-liquid mixing effect. But, the proportion of the edge liquid phase increased to 22.5% showed that the gas-liquid mixing effect was obviously improved, when the gas-liquid ratio was 6∶1. By further adjusting the length of the throat to 180 mm, the foam produced was mixed more evenly, and the proportion of the edge liquid phase was increased to 44.1%. The optimized foam generator could release thoroughly mixing of the gas phase and the liquid phase, then the homogeneous foam flew out of the outlet. And the foam could block 95% of dimethyl disulfide, hydrogen sulfide, and ammonia, which were typical odorous substances, and the emission amount of pollutants decreased by 66.5%, 65.8%, and 40.2% respectively.
Last Update:
2022-12-01