Methods to Reduce Concentrations of Trace Metals in Refinery Wastewater
This paper presents various methods to reduce concentrations of trace metals in refinery wastewater. The phrase “to reduce concentrations of…
Separate Stage Nitrifying Trickling Filters in Cold Climates
Nitrifying trickling filters (NTFs) provide a simple and reliable alternative to conventional activated sludge systems. Performance of several full-scale and…
Troubleshooting Activated Sludge Secondary Clarifier Performance With Simple Diagnostic Tests
Both mixed liquor flocculation and secondary clarifier shot-circuiting problems result in elevated suspended solids concentrations in activated sludge secondary effluents….
Should a Municipality Buy Land for Biosolids Reuse?
Municipalities evaluating beneficial reuse options for biosolids, such as land application contracts and landfill cover operations, may want to add…
Rx for Rangelands
The application of biosolids to semiarid western rangelands can improve soil fertility, biological productivity, and increase wildlife habitat, without creating…
Reclaimed Water Distribution–San Diego’s Market, Facilities and Financing
The City of San Diego (City) embarked on an expansive plan for water reclamation and reuse with formation of the…
Salinity and Water Reuse in San Diego
In general, San Diego’s sewage is mildly brackish. The metropolitan area’s wastewater carries a relatively high total dissolved solids (TDS)…
Operator Input to Wastewater Treatment Plant Design
The main function of this engineer is to design a wastewater treatment system for removing sewage from water. The main…
Computer + Operator = Total Control
Active operator control through special TV-like system produces high-quality reusable effluent and reduces operating costs.
The Removal of Toxic Contaminants From Bleached Kraft Mill Wastewater with Enchanced Activated Sludge Treatment
A pilot scale investigation of the selector-assisted activated sludge treatment of bleached kraft mill effluent was conducted at a northern…
Alternative Fuels for Multiple-Hearth Furnaces
Results of a feasibility study on the use of refuse-derived fuel, shredded paper, wood waste, coal and waste oil in…
An Analysis Program for Planar Orthogonal Frame with Diagonal Bracings and Elastic Supports–by Energy Methods
During the last decade the digital computer and matrix methods have been rapidly grown as a most efficient and economic…