摘要
Abstract
It is necessary to set up ventilation wells in pressurized wastewater convey system.The release of gas through these wells is inevitable.However,there is less research about the gas released from these wells.Moreover,systematic research program has not been developed.In order to achieve the delicate management of the city and cope with the environmental supervision of ventilation wells in the future,it is essential and urgent to study the gas released from there.Aiming at pressurized wastewater convey system,the paper constructed a comprehensive gas monitoring system for ventilation wells.Perception layer monitored five parameters,including gas flow rate,concentration of hydrogen sulfide,ammonia and methane,as well as total number of bacteria.These parameters represented the four monitoring modules of gas flow,odor pollutants,explosive gases and pathogenic microorganisms.The sampling and analysis methods of each parameter were analyzed.Concerning the difficulty of gas flow monitoring,a preliminary scheme was put forward.In transmission layer,data transmit could apply low cost NB-loT technology.Data could be encrypted if necessary.In application layer,if the monitoring result exceeded the standard,the alarm could be triggered and the corresponding management measures would start.Through data accumulation,the relationship between gas flow and maintenance operations could be established.During the application of this monitoring system,the choosing of wastewater trunk line,the selection of site and contrast sampling should be focused on.关键词
污水压力输送系统/透气井/气体/监测/系统Key words
pressurized wastewater convey system/ventilation/well/gas monitor/system分类
资源环境
