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SOURCE Summer 2012

Vacuum Plumbing, Continued from page 29 located at the vacuum pump(s) discharge, Vacuum Drainage Desgin Criteria eliminating nearly all roof penetrations. The designer is responsible for identifying The vacuum waste piping is smaller in A vacuum drainage system was recently and locating the number of fixtures and diameter than gravity drain piping. The way installed as part of a renovation in the tallying the required air flow rate (in cubic the vacuum drainage system functions is Smithsonian Natural History Museum in feet per minute) for each. The flow rate per that air becomes the transporting medium Washington, D.C. The design of the vacuum fixture can be obtained from the manufac- for the gas and/or the suspended solids. drainage system allowed the museum to turer of the equipment. Once the fixtures The negative pressure provides the energy transport drain water and wastewater from and vacuum source equipment have been and by using smaller pipe sizes an optimum the building to the sanitary waste main, located and the number of simultaneous transporting velocity is attained. without penetrating any floor slabs. The usage factors applied, the size and layout of architect had the flexibility of space plan- the system can be completed. The vacuum waste piping is virtually self- ning with sinks and toilets in the restroom venting with the only atmospheric vent renovations as easily as moving furniture. The vacuum source equipment is located as close to the building sanitary waste main as possible. The vacuum equipment usually consists of a minimum of two vacuum pumps and two storage tanks. See the illustration on page 29 for a depiction of a Save The Date! Vacuum plumbing systems have a brightcomplete vacuum drainage system.The Future Annual Fall Conference easily to several new applications:future. All of this technology will transfer The 21st Century Water Utility: A Progress Report In the health care arena, the concept of October 8 - 11, 2012 vacuum plumbing, in addition to water and San Diego, CA of hospital-acquired infection in a patientconstruction savings, minimizes the chance Town And Country Hotel and Resort room at the toilet by minimizing vaporiza- 500 Hotel Circle North tion (the aerosol effect) of the flush cycle. San Diego, CA 92108 Stadiums and arenas that host multiple types of events and don’t sit unused very long are excellent candidates for the vacuum toilets and vacuum drainage. The Register before the need to upgrade the public sewer andreduction in wastewater outflow reduces August 11th Mobile restroom systems utilize theadds to cost savings. and Save! a sanitary environment comparable to anyvacuum toilets for water savings and offer stationary public restroom. This type of unit provides great flexibility for temporary or short term needs at various locations and requires only a short time to install. The mobile restroom can be made totally self- In 2012, we are one-eighth of contained by including on-board water and the way through the 21st power generation for remote locations. S Century. At this juncture, it is necessary and appropriate to Bruce R. Blanchart, is owner of Yardley Pump ask again, “What does it mean and Vacuum, Inc., Santa Ana, CA 92705; (714) to be a 21st Century water 541-7905; bblanchart@ypvinc.com. He holds utility?” And further, “How are a BS in mechanical engineering from Western we measuring up, and what New England College, Springfield, MA, and priorities still lie ahead?” has more than 40 years of vacuum pump and system engineering experience. Bruce is also a www.ca-nv-awwa.org member of ASPE Standards Committee 110, Vacuum Waste Systems. 30 SOURCE summer 2012


SOURCE Summer 2012
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