Pressure and Vacuum Sewer Demonstration Project,Bend,Oregon.

摘要

A pressure sewer system collecting domestic septic tank effluent and a vacuum system collecting raw domestic sewage were constructed in the City of Bend,Oregon. Each of the systems collected sewage from eleven houses and discharged into existing gravity sewer mains. Groups of one,two and three houses were served by single collection sump/vacuum valve or collection sump/pump combinations. The systems were operated and monitored for a period of approximately one year. The systems were evaluated for construction costs,operation and maintenance costs,reliability,operating characteristics,and chemical characteristics of collected sewage and septic effluent.