KUANGKe,LIJie,XIAOXiang,et al.Emission Characteristics of Odorous Pollutants in Pumping Room of an Underground Water Purification Plant[J].China Water & Wastewater,2025,41(1):78-84.
Emission Characteristics of Odorous Pollutants in Pumping Room of an Underground Water Purification Plant
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第41卷
Number:
第1期
Page:
78-84
Column:
Date of publication:
2025-01-01
- Keywords:
- underground water purification plant; pumping room; odorous pollutants; CFD model; emission characteristics
- Abstract:
- The emission characteristics of odorous pollutants in the pumping room of an underground water purification plant in southern China were analyzed. The odorous substances detected in the pumping room mainly comprised NH3, H2S, trimethylamine, methanethiol, and methyl sulfide, with average concentrations of 1.56 mg/m3, 18.70 mg/m3, 0.058 mg/m3, 0.041 6 mg/m3 and 0.145 mg/m3 respectively. The calculated total odor activity value of the pumping room amounted to 10 743.34, among which the odor activity value of H2S was 10 388.89, with contributing rate of 96.70%. Thus, H2S was the primary contributor to the odor and the key substance for odor control. The air inlets and exhaust outlets of the pumping room were cross-arranged on the top of the space. The computational fluid dynamics (CFD) simulation revealed that the distribution of air flow and odorous pollutants within the space was relatively uniform, and the odor collection efficiency was high. Meanwhile, the production flux and production coefficient of H2S were further computed, which were 809.776 mg/(m2·h) and 19.301 mg/m3 respectively. The research ascertained the rational air supply and exhaust design of the pumping room, the quantity of odorous pollutants generated and the key control substances, which could offer guidance for the prevention and control of odorous pollution in the pumping room of the same type of water purification plants.
Last Update:
2025-01-01