Pilot-plant studies were conducted on zeolite type A, an alternative detergent builder, over a range of concentrations expected in settled wastewater and at two degrees of calcium exchange for sodium ...

Australian-based process contractor, Environmental Solutions International (ESI), has recently completed the commissioning of a new WwTP at South Caboolture in Queensland, based upon its BNR process.

A study to determine the toxic effects of mercury on the activated sludge process was made in the laboratory under controlled batch-fed conditions. The threshold mercury concentrations that were ...