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Mathematical modeling is a useful tool for the design, analysis and control of wastewater treatment systems.
The activated sludge process is one of the most common processes used in wastewater treatment, and therefore is a particularly important candidate for the application of mathematical models.
In the 1980s, a task group organized by the International Association on Water Quality (IAWQ) developed a conceptual model of the activated sludge process, which has become an industry-wide standard for the development of computer-based activated sludge models. A recent version of the IAWQ model incorporates 19 components, 17 processes, and numerous rate and stoichiometric coefficients.
It is difficult and costly to quantify all of the necessary coefficients for any given application of the model; consequently, it is important to identify the most critical wastewater and biomass components and the relevant coefficients to be quantified for the most common uses of the model.
It is also important to provide guidance to potential model users on the use of default and/or estimated values for the remaining parameters.
Trace Organic Compounds and Implications for Wastewater Treatment: Technical Brief
This Technical Brief has been prepared in response to concerns over the presence of trace organic compounds (TOrC) in wastewater, water supplies, and the receiving environment (Associated Press,...
Water Reuse: Understanding Public Perception and Participation
Non-potable and potable (principally in-direct potable) water reuse initiatives in the United States have faced increasing public opposition. Several high-profile initiatives have been halted...
Sources and Variability of Cryptosporidium in the Milwaukee River
The results of this project should enhance our ability to proactively improve the protection of public health. Equating the presence of pathogens to broad land use categories may help mitigate...
Fate of Estrogenic Compounds during Municipal Sludge Stabilization and Dewatering
This project convened a team of experts in the fields of environmental engineering (AECOM), analytical chemistry and hydrogeology (USGS), and biological assay analysis (UA) to evaluate the...
Treatment Wetlands
The ebook edition of this title is freely available as an Open Access text.
Treatment Wetlands is the seventh volume in the Biological Wastewater...
Site Specific Risk Assessment Tools for Land Applied Biosolids
Available as eBook only
This report describes a linked environmental dispersion, exposure, and health effects model, known as the Spreadsheet Microbial Assessment of Risk:...
Epidemiologic Surveillance and Investigation of Symptoms of Illness by Neighbors of Biosolids Land Application Sites
This report is only available as a Pay-Per-View item.
Wastewaters from homes, businesses and public facilities require treatment to protect human and environmental health. In the process of...
Application of Membrane Bioreactor Processes for Achieving Low Effluent Nutrient Concentrations
The overall aim of this research was to evaluate membrane bioreactor (MBR) process designs to meet low effluent nitrogen and/or phosphorus concentrations from municipal wastewater treatment...