Biosolids digester replacement project delivers savings and helps sustainability
The process hydrolyses dewatered biosolids, using low-temperature steam, high-speed shearing and alkali, in an enclosed, low-pressure reactor.
London’s Greenway WWTP chooses centrifuges for sludge dewatering
London Ontario’s Greenway wastewater treatment plant takes in sludge from six other city treatment plants. Sludge dewatering is achieved using centrifuges.
Evaluating the performance of new fluid bed incinerators
The Duffin Creek Water Pollution Control Plant (WPCP) in Pickering, Ontario, is jointly owned by the Regional Municipalities of York and Durham.
New device reduces polymer use and controls struvite during sludge dewatering
HydroFLOW technology is being used in the wastewater sector to control struvite and other scale forming issues during sludge dewatering processes.
Injecting manure into soil reduces estrogen runoff loads
A new study shows that applying manure to crop fields by means of shallow disk injection into the soil, rather than traditional surface broadcast,...
Biochar shows benefits as manure lagoon cover
Manure can be a useful fertilizer, returning valued nitrogen, phosphorus and potassium to the soil for plant growth. But manure has problems. Odour offensiveness,...
Analyzing digester heating requirements
An analysis of Ashbridges Bay Wastewater Treatment Plant led to some conclusions that may be used for digester heating design and operation purposes.
Dry phase anaerobic digestion of organic waste: Resource recovery
If energy recovery is part of a organics recycling strategy, two well-proven routes are available: thermal processes and anaerobic digestion .
Lessons learned from successful applications of biological landfill leachate treatment
Landfill leachate treatment is a major engineering challenge due to the high and variable concentrations of dissolved solids, dissolved and colloidal organics, heavy metals and xenobiotic organics.
Study identifies significant benefits to Canadian biogas development
Biogas is a "good news" sustainability story for farmers, municipalities, food processors and for quality of life and the environment.
Latest Articles
Increasing U.S. wetlands by 10% would double nitrogen removal, study finds
New computer modeling analysis suggests that prioritizing wetland restoration close to heavily farmed areas may remove up to 40 times more nitrogen than the...
