Activated Sludge Secondary Clarifier Operations and Design Considerations
The EPA Water Engineering Research Laboratory (WERL) sponsored a symposium on activated sludge clarifier design and operation in Cincinnati, Ohio…
A Low-Cost Alternative to a Marine Discharge: Elk River Treatment Plant in Eureka, California
If ever a community deserved a solution to its wastewater management problems, it was the City of Eureka in 1980….
Defeating the Enemy from Within–Recycle Streams from Solids Processing
Recycle streams are the liquid streams which result from almost all solids processing within a wastewater treatment plant, including separation,…
Establishing an Effective Program for Sewer Rehabilitation
A number of U.S. cities have sewage collection systems dating back over 100 years. Some of the original brick sewers…
Environmental Aspects of the Stanford University Environmental Safety Facility
Modern medical treatment, laboratory research leading to breakthroughs in scientific knowledge, education for tomorrow’s leaders–these are among the benefits society…
Sludge Disposal by High-Rate Land Application at the Sacramento Regional Wastewater Treatment Plant
Efficient, high-rate sludge application to soils at the Sacramento Regional Wastewater Treatment Plant (SRWTP) site at Sacramento, California, has been…
Engineering Implications of a New Trickling Filter Model
For more than 20 years, engineers have used fairly simple design equations, such as the modified Velz equation, to design…
A Fundamental Model for Trickling Filter Process Design
Wastewater treatment using biofilms grown on a support media was the first continuous flow bioreactor employed by sanitary engineers nearly…
Upgrading a Landmark Water Treatment Plant
By 1982, rapid growth in the metropolitan area of Tampa, Fla., had increased the demand for water beyond the capacity…
Defensive Water Quality Modeling: Industry’s Role in NPDES Permitting
Recent developments have increased industry’s participation in the process of setting effluent limitations for its treated wastewater. Realistic effluent limitations…
Sulfide Control in Omaha and Cedar Rapids
Two midwest cities have implemented the caustic slugging technique for sulfide control on wastewater interceptors. The major problem at both…
Trickling Filter/Solids Contact Process: Full Scale Studies
This report outlines the characteristics that distinguish the trickling filter/solids contact (TF/SC) process for municipal wastewater treatment from other similar…