Fueling Combined Heat and Power: EPA and WERF Initiatives and Case Studies
The United States Environmental Protection Agency (EPA) and the Water Environment Research Foundation (WERF) recognize the value and importance of…
Gas Turbines: A Good Fit for WWTP Heat and Power Systems?
Traditionally, wastewater treatment plants have utilized digester gas fired boilers or internal combustion engines for on site utilization of digester…
Implications of the EPA's Endangerment Finding, Reporting Rule, and Tailoring Rule for POTWs
The Supreme Court ruling in Massachusetts v. EPA, 549 U.S. 497 (2007) that determined that greenhouse gases (GHGs) including carbon…
Integrating Anaerobic Digester with Liquid Stream Treatment: Modeling Approach
Although, anaerobic digestion (AD) modeling can provide significant benefits in the design, operation and optimization of the digestion performance, AD…
Deriving More Information from Volatile Solids Data
This paper reports on how the calculation of volatile solid destruction (VSd) that may provide a relatively inexpensive and quick…
Biogas Enhancement Pilot Test at Sacramento Regional Wastewater Treatment Plant Proves Feasibility and Value of Co-digestion Using High Strength Organic Wastes
The Sacramento Municipal Utility District (SMUD) currently generates electricity at a cogeneration plant located adjacent to the Sacramento Regional Wastewater…
Evaluating Management Options for Improving Cost-Effectiveness at METROGRO Farm
The Metro Wastewater Reclamation District (Metro District) in Denver, Colorado is the largest metropolitan wastewater treatment facility between the Mississippi…
Performance of a Pilot-scale Continuous Flow Microbial Electrolysis Cell Fed Winery Wastewater
Abstract A pilot-scale (1,000 L) continuous flow microbial electrolysis cell was constructed and tested for current generation and COD removal…
WEF/WERF Cooperative Study of Nutrient Removal Plants: Achievable Technology Performance Statistics for Low Effluent Limits
WEF and WERF cooperated in a comprehensive study of nutrient removal plants designed and operated to meet very low effluent…
Simultaneous Biological Nutrient Removal in a Single-Stage, Low Oxygen Aerobic Reactor
Simultaneous biological nutrient removal (SBNR) is referred to as the biological process where nitrogen and phosphorus in excess of that…
Analysis of Organic Nitrogen Removal in Municipal Wastewater by Reverse Osmosis
Organic nitrogen (Norg) removal by the reverse osmosis (RO) process is not well documented in the literature. Unlike inorganic nitrogen…
Recycling Nitrates to Headworks for Multiple Benefits in a Fixed Film Plant
This paper describes the results obtained at the Littleton/Englewood wastewater treatment plant using an intra-plant nitrified effluent recycle (NER). A…