Archive for February, 2011

Increasing Resilience at the SENS House

The SENS House at the Berea College Ecovillage is a research and demonstration facility for methods of increasing resilience–the ability of a household to maintain essential functions in the face of reductions in the availability of energy, water, food, or basic goods and services. Continue reading →

SENS Note: Biological Treatment and Reuse of Greywater at the SENS House

A compost filter on the first tank reduces odors.

The typical Kentucky household uses 69 gallons of water per person per day for indoor use.

The SENS House uses 10 gallons per person per day, of which 75% becomes greywater (from sinks, showers, and washing), as opposed to blackwater (from toilets). While obviously cleaner than blackwater, greywater contains appreciable amounts of:

  • Food particles
  • Soaps, shampoos, and detergents
  • Bacteria from body washing
  • Dirt

SENS students designed and built an ecological machine to purify the greywater for safe and odor-free reuse in irrigating crops in the SENS House greenhouse.

Continue reading →