Minimizing Industrial Costs of Municipal Wastewater Treatment
The Federal Water Pollution Control Act Amendments of 1972 (Public Law 92-500) not only addresses pollution abatement, but stipulates certain…
A Regional Groundwater Resource Management Model
This paper demonstrates the application of a groundwater quantity and quality model to large-scale groundwater basin management. The model employs…
Analysis of Multiple Station Urban Air Sampling Data
Air pollution control depends upon adequate current data and projections describing concentrations of the important pollutants within the control region….
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…
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…
Rx for Rangelands
The application of biosolids to semiarid western rangelands can improve soil fertility, biological productivity, and increase wildlife habitat, without creating…
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.