The study investigated the unbiodegradable fraction of particulate chemical oxygen demand (PCOD) in thickened waste activated sludge (TWAS) using semicontinuous-flow completely-mixed anaerobic ...

The conventional anaerobic digestion process, requiring long solids retention times (SRTs) to digest solids, is currently viewed as impractical for the pulp and paper industry because of high capital ...

Researchers in the United States have discovered an efficient, cost-effective way to make biodegradable plastics from unused and potentially polluting waste. The process makes use of bacteria found in ...

The United States generates seven million tons of sewage sludge annually, enough to fill 2,500 Olympic-sized swimming pools. While a portion of this waste is repurposed for manure and other land ...

Multi-year improvement project modernizes clarifiers and activated sludge tanks to support long-term operational performance.

Researchers in the US have discovered an efficient, cost-effective way to make biodegradable plastics from unused and potentially polluting waste. The process makes use of bacteria found in the salt ...