A Whole Plant Approach to Evaluating Activated Sludge Treatment Plant Capacity
The Central Contra Costa Sanitary District is in the process of evaluating the capacity of its activated sludge wastewater treatment…
The Great Secondary Clarifier Debate: II. Secondary Clarifiers Should Not Be Used For Sludge Storage
This summary sets the framework of the second half of a two-part interactive debate. The intent of the authors in…
The Great Secondary Clarifier Debate: I. Surface Overflow Rate is Not an Appropriate Design Criterion For Dimensioning Secondary Clarifiers
This summary sets the framework for the first half of a two-part interactive debate. The intent of the authors in…
Consolidation of Biosolids Facilities at Wichita
Upon publication of EPA’s CFR Part 503 regulations, the City of Wichita, Kansas began the planning effort to comply with…
Achieving Cost Savings for Atlanta*s Water and Wastewater Systems Through Contract Management and Re-Engineering
The City of Atlanta’s antiquated water, wastewater, and sewer systems must comply with increasingly stringent environmental requirements while providing City…
Benchmarking at the Miami-Dade Water and Sewer Department to Achieve Competitive Utility Performance
Water and wastewater utilities will be facing significant challenges moving forward into the 21st century. These challenges include competition from…
Defining Critical Process Elements To Achieve Economical Class A Biosolids Through High-Temperature Anaerobic Digestion Systems
Several high-temperature anaerobic digestion process options are potentially available to meet US EPA Class A pathogen standards. Some of these…
Modeling of Stormwater Flow Impacts on Treatment Plant Performance and Load Sharing Between Neighboring Plants
Clackamas County is proposing to divert flow from its Kellogg Creek wastewater treatment plant, which is overloaded, to the nearby…
Full Scale Experience With Biological Process Models – Calibration Issues
The advent of computer-based modeling tools has greatly improved the ease with which biological process modeling can be implemented. However,…
Quality Assurance Evaluations for Biosolids Management Programs: An NBMA Pilot Project
Due to limits on funding for EPA and other state and local agencies to provide regulatory oversight of biosolids management…
Techniques for Modeling Hazardous Air Pollutant Emissions from Landfills
The Environmental Protection Agency’s Landfill Air Estimation Model (LAEEM), combined with either the AP-42 or CAA landfill emission factors, provide…
Evaluation of The US EPA Recommended Approach to Predicting Air Emissions from Pulp and Paper Industry Landfills
There is growing indication that the pulp and paper industry will be required to comply with Clean Air Act (Title…