Research and design for ventilation technology of wide-flat space in underground sewage treatment plants
Ban Chunyan[1], Zhang Xin[1], Sang Jianfei[1], Yang Guorong[2], Shao Jiantao[2]
In view of the unique wide-flat space characteristics of the underground construction of the underground sewage treatment plant, the technology of horizontal piston flow ductless ventilation is developed and designed. Taking the wide-flat space as the research object，the airflow characteristics of this ventilation method are studied through the scale model experiment, numerical simulation and field measurement. It is found that this ventilation method has a shorter air age, higher ventilation efficiency and more uniform airflow. This paper makes a comparative analysis of the horizontal piston flow ductless ventilation system and the traditional air duct mechanical ventilation system from the aspects of vent pipe density, equipment, investment and construction. The results show that the former has the advantages of less engineering quantity, low installed power, low noise, low investment, low energy consumption and convenient construction. It can provide references for the ventilation system design of the same type for underground sewage treatment plants.