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Objective: • Design and Install non-seasonal Greywater System at the South Co-Op • Meet all City and State Requirements Water source Rainwater • Hand washing sinks • Rainwater Water Sink • Toilet The Filter Brac Systems RGW-250 Picture Gallery Required Work Toilet Use Average of 810 Costumers/day • 15% of costumers use the restroom • About 100 gal/day water needed to flush toilets Hand Washing Sink Use • Greywater from sinks can produce 31% (31 gal/day) of toilet water Figure 1: Public bathroom at the south Co-Op Figure 3: The final South Corvallis Co-Op Greywater Recycle Piping Schematic 6’ Total Roof Area = 1022 ft 2 Co-Op Roof 27.75’ 36’ Figure 2: The 1500 gallon rainwater encatchment tank 0 20 40 60 80 100 120 140 160 180 200 0 1 2 3 4 5 6 7 8 9 Rainfall (in/month) Month Accumlated rainwater (gal/dayl) Average monthly rainfall (in) ) Rainwater (gal/day) Figure 4: Rainwater volume in the tank throughout the year Figure 3: The monthly rainfall and volume of rainwater collected for reuse. 0 200 400 600 800 1000 1200 1400 1600 Volume of water in the Rainwater tank (gal) Month • 1500 gallon Rainwater tank • July – Sept. tank will be dry and city water will be needed to flush toilets • IAPMO Certified and approved by the State of Oregon • Automated valve system • Automated chlorination • Backflow prevention • Pump and greywater storage tank • Overflow valve • Mesh filter Figure 5: A schematic of the filtration system Dave Eckert, Paul Cooke, Jason Blake-Beach, Peter Byrne, Todd Jarvis, and Dr. Phil Harding Acknowledgments Greywater: By Oregon Law, greywater is defined as water produced from hand washing sinks, showers, and washing machines. Permitting • Oregon legalized greywater recycle in 2008 • Greywater legislature (OPSC 08-01 through OPSC 08-04) • Filed and received plumbing permits for both Brac and Rainwater tank • Filed a flood plane development application • Construct system housing • Permit approval for housing • Controls • Outreach • Gained access to plumbing through outer wall • Compiled water inventory and produced water consumption model • Repaired break in sewer line and installed tee fitting for Brac overflow • Obtained three city plumbing permits for greywater system. • Installed Brac System and Sump Figure 7: System Housing The Team: Brittany Park, Dennis Petersen, and Jon Isaacs Accomplishments Left to right, top to bottom: a) Camera sewer line inspection b) The open Co-Op wall c) Connecting overflow into main line d) Installed greywater system Hand Washing Sinks High Daily Volume 60 gal Low Daily Volume 20 gal Average Daily Volume 31 gal Toilet Use High Daily Volume 120 gal Low Daily Volume 45 gal Average Daily Volume 96 gal Daily estimates obtained from flow monitoring used to size Brac System
