科研之友
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摘要
In order to study the deodorizing effect of three-dimensional air supply in the underground sewage plant, NH3 was taken as a tracer gas, and the numerical simulation method was used to compare the deodorizing effects between the three-dimensional air supply and the conventional airflow organization in the dewatering machine room. The influences of different air supply and exhaust forms on sewage discharge efficiency and odor concentration in the dewatering machine room were also studied. The results show that three-dimensional air supply with vertical pipes has an advantage in environmental quality improvement for the dewatering machine room of an underground sewage plant, and its deodorization efficiency increased by 40% than that of the original ventilation form. The average odor concentrations in the dewatering machine room and work area decreased by 43.7% and 62.9%, respectively. In addition, the three-dimensional air supply volume has slight effect on the deodorization efficiency in the dewatering machine room, but the deodorization efficiency significantly increased with the increase of the exhaust air flow. The three-dimensional air supply structure could effectively improve the deodorization effect of the underground sewage plant, and a reasonable increase in the exhaust air flow and reduction in air supply flow could also improve the deodorization effect and reduce the ventilation energy consumption.
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