DEVELOPMENT AND TESTING OF A WASTEWATER RECYCLER AND HEATER

The results of this program have demonstrated the feasibility of an automatic and self-contained appliance that can recover and store usable hot water from waste laundry water, using essentially the same amount of energy as an equivalent-capacity water heater. It has been shown by extended evaluation tests with a waste stream of real laundry water that this unit is capable of recovering sterile hot water at a steady state rate of 22.7 liters/hour (6 gph) with a specific energy draw of 79 watt-hours/liter (299 watt-hours/gal), without the use of any expendable chemicals. It has also been shown by extended evaluation tests with a feed that simulates hospital wastewater preconcentrated by ultrafiltration and reverse osmosis that this unit can increase the solids concentration of a waste water from less than 2% to at least 29.3%. The results of a manufacturing cost analysis have shown that a conservative annual cost (that is, a maximum annual cost) of this appliance is $717 per year. Economic feasibility therefore is not demonstrable at present on a large scale. However, should water cost increase or the cost of the appliance decrease, a viable demand for household water recovery with the appliance would be possible.

• Supplemental Notes:
  • Prepared in cooperation with National Aeronautics and Space Administration, Washington, D.C., Army Medical Research and Development Command, Washington, D.C., and Department of Housing and Urban Development, Washington, D.C.
• Corporate Authors:

  CHEMTRIC, Incorporated

  Rosemont, IL  United States 

  Municipal Environmental Research Laboratory

  26 West St Clair
  Cincinnatic, OH  United States  45219
• Authors:
  • Guarino, V J
  • Bambenek, R A
• Publication Date: 1976-12

Media Info

• Pagination: 106 p.

Subject/Index Terms

• TRT Terms: Analysis; Brines; Costs; Design; Energy consumption; Evaporation; Fabrication; Performance tests; Water conservation; Water heaters
• Uncontrolled Terms: Cost analysis; Reclaimed water
• Old TRIS Terms: Distillation equipment; Laundries
• Subject Areas: Design; Energy; Environment; Finance; Freight Transportation;

Filing Info

• Accession Number: 00158929
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: EPA/600/2-76/289
• Contract Numbers: EPA-68-03-0436
• Files: NTIS
• Created Date: Aug 4 2002 12:00AM