Study on odor dispersion and distribution characteristics in sludge dewatering room based on CFD
基于CFD的污泥脱水机房恶臭扩散分布规律研究

The sludge dewatering room is one of the most serious odor pollution treatment sectors in wastewater treatment plants, of which the odor can cause bad effect on health of both the workers and people around it. To study odor dispersion and distribution characteristics in dewatering room, theory of CFD and its commercial software FLUENT were applied to simulate the concentration of H2S, one of main odorants. Three typical scenes were studied. Results suggested that different ventilations could affect H2S dispersion and distribution greatly in a dewatering room. When designing a dewatering room, sludge dewatering machines should be placed the downwind of the most common wind direction in summer and should be near the exhausted outlet to drive out odor with the shortest path quickly. Meanwhile, other arrangements should be considered that the places to which workers often exposed are in the lower concentration area.