Aerobic Thermophilic Digestion or Liquid Composting of Municipal Sludgesby Harlan G. Kelly, Dayton & Knight Ltd, Canada,
Abstract: A study funded by Supply and Services Canada through the Wastewater Technology Center of Environment Canada, and the Province of British Columbia is being undertaken over a two year period to assess the suitability of three types of liquid composting facilities for small communities (less than 10,000 people). Study objectives address ability to pasteurize, stabilize, reduce odour, economize on energy, utilize state variables for system control, and assess dewaterability. A retrofit plant using diffused air and turbine mixing, and a pump and air venturi system will be compared against the West German FUCHS standard. The three full-scale installations are constructed at treatment plants in British Columbia, Canada. Initial study results are discussed.
Subject Headings: Composting | Sludge | Local government | Wastewater treatment plants | Waste treatment plants | Rehabilitation | Control systems | Wastewater management | Sewage | North America | Canada | British Columbia
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