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Best Practices for the Treatment of Wet Weather Wastewater Flows
ISBN: 9781843396536 / Angielski / Miękka / 138 str. Termin realizacji zamówienia: ok. 5-8 dni roboczych. During wet weather events, separate and combined wastewater collection systems deliver substantial amounts of storm water runoff to wastewater treatment plants. Often these flows inundate collection systems and treatment works creating bypasses of untreated or partially treated wastewater. The federal Clean Water Act (CWA), its amendments, and associated regulations have been attempting to address these concerns for nearly 30 years. These regulations, coupled with the wastewater treatment standards under the CWA, are posing immense challenges to the owner/operators of wastewater systems, who...
During wet weather events, separate and combined wastewater collection systems deliver substantial amounts of storm water runoff to wastewater treatme...
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cena:
684,90 zł |
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Methods for Wastewater Characterization in Activated Sludge Modelling
ISBN: 9781843396628 / Angielski / Miękka / 596 str. Termin realizacji zamówienia: ok. 5-8 dni roboczych. 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...
Mathematical modeling is a useful tool for the design, analysis and control of wastewater treatment systems. The activated sludge process is one of th...
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cena:
684,90 zł |
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Development of a Water Quality Model to Support Newport Bay, California TMDL
ISBN: 9781843396642 / Angielski / Miękka / 123 str. Termin realizacji zamówienia: ok. 5-8 dni roboczych. Newport Bay (Orange County, California) is listed by the California State Water Resources Control Board (SWRCB) as a water quality limited receiving water body because of sporadic exceedances of the fecal coliform water quality objectives for body contact recreation. Consistent with federal and state requirements, a Total Maximum Daily Load (TMDL) is being implemented in the watershed. The fecal coliform TMDL in Newport Bay is a phased approach for understanding and controlling the microbiological water quality in the to ensure the reasonable protection of the Bay's beneficial uses. An...
Newport Bay (Orange County, California) is listed by the California State Water Resources Control Board (SWRCB) as a water quality limited receiving w...
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cena:
684,90 zł |
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Whole Effluent Toxicity Testing
ISBN: 9781843396673 / Angielski / Miękka / 95 str. Termin realizacji zamówienia: ok. 5-8 dni roboczych. Under the National Pollution Discharge Elimination System (NPDES), many municipal and industrial wastewater treatment facilities must perform Whole Effluent Toxicity (WET) Testing. Regulatory agencies determine the level of compliance of each facility by making inferences about the results of these tests. There has been some concern regarding appropriate ways to integrate WET tests into NPDES permits. The central issue of this concern involves determining the relationship between WET tests and instream biological conditions. Previous research (WERF project 95-HHE-1) has examined this issue...
Under the National Pollution Discharge Elimination System (NPDES), many municipal and industrial wastewater treatment facilities must perform Whole Ef...
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cena:
684,90 zł |
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Water Reuse: Understanding Public Perception and Participation
ISBN: 9781843396697 / Angielski / Miękka / 193 str. Termin realizacji zamówienia: ok. 5-8 dni roboczych. 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 after several years of planning and tremendous expenditures. To understand why the public holds the perceptions they do and what public participation options exist to address water reuse more constructively, a multidisciplinary analysis was undertaken by a team of social scientists, engineers, and water professionals. Through a comprehensive literature review, three in-depth case studies, and a 2-day...
Non-potable and potable (principally in-direct potable) water reuse initiatives in the United States have faced increasing public opposition. Several ...
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cena:
684,90 zł |
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Navigating the TMDL Process
ISBN: 9781843396710 / Angielski / Miękka / 106 str. Termin realizacji zamówienia: ok. 5-8 dni roboczych. Narrative water quality criteria are an integral component of States' water quality standards but they pose special problems when incorporated into the TMDL process. The TMDL process is typically a quantitative activity, defining numeric allowable loads necessary to meet a numeric water quality objective. Narrative criteria confound development of quantitative TMDLs, due to the absence of these numeric criteria. The objective of this research was to improve the methods for addressing narrative water quality criteria in the TMDL process. The problems associated with narrative criteria in the...
Narrative water quality criteria are an integral component of States' water quality standards but they pose special problems when incorporated into th...
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cena:
684,90 zł |
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Effects of Wastewater Disinfection on Human Health
ISBN: 9781843396734 / Angielski / Miękka / 247 str. Termin realizacji zamówienia: ok. 5-8 dni roboczych. Wastewater disinfection is practiced with the goal of reducing risks of human exposure to pathogenic microorganisms. Ideally, this goal is to be met without introducing other risks, such as those that could be associated with disinfection by-products. The purpose of this research was to assess the effects of wastewater disinfection on human health. This assessment was conducted by examining two fundamental questions regarding the application of disinfection: 1. Should municipal wastewater effluents be disinfected prior to discharge?; and, 2. Under circumstances where disinfection is...
Wastewater disinfection is practiced with the goal of reducing risks of human exposure to pathogenic microorganisms. Ideally, this goal is to be met w...
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cena:
684,90 zł |
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Navigating the TMDL Process
ISBN: 9781843396741 / Angielski / Miękka / 360 str. Termin realizacji zamówienia: ok. 5-8 dni roboczych. TMDLs, or total maximum daily loads, are required under the Clean Water Act, Section 303(d), for waterbodies that do not attain water quality standards. The objective of this research was to review the existing TMDL process and to develop an improved design for TMDL development where improvements are needed. This objective was accomplished through: (1) Identifying and verifying problems with the existing TMDL program; (2) Formulating a range of recommended improvement options on specific topics that address identified weaknesses; and (3) Providing case studies examples that highlight these...
TMDLs, or total maximum daily loads, are required under the Clean Water Act, Section 303(d), for waterbodies that do not attain water quality standard...
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cena:
684,90 zł |
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Protocols to Assess the Breakdown of Flushable Consumer Products
ISBN: 9781843396758 / Angielski / Miękka / 136 str. Termin realizacji zamówienia: ok. 5-8 dni roboczych. A scientifically sound approach is needed to ensure that flushable consumer products are compatible with household plumbing fixtures, as well as wastewater collection and treatment systems. In addition to assessing disposal system compatibility, an assessment approach should also ensure that flushable consumer products do not become an aesthetic nuisance in surface waters and soil environments. This document presents an overall approach for assessing the fate and compatibility of consumer products in wastewater disposal systems. While the focus of this document is on the United States, it is...
A scientifically sound approach is needed to ensure that flushable consumer products are compatible with household plumbing fixtures, as well as waste...
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cena:
684,90 zł |
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Sensor Technology for Water Quality Monitoring: Fiber Optic Sensor
ISBN: 9781843396772 / Angielski / Miękka / 72 str. Termin realizacji zamówienia: ok. 5-8 dni roboczych. Two methods for the detection of important human pathogens, Cryptosporidium parvum and Helicobacter pylori, were investigated: a fiber optic biosensor, and real time PCR. The mechanism for specific detection in both methods is recognition of specific DNA sequences in the target organisms. The biosensor that was used, the Analyte 2000, was originally developed for the detection of chemicals. It utilizes a fiber optic wave guide that propagates an evanescent light wave of very specific wavelength. The light excites fluorescent molecules bound to the waveguide, but not in the bulk solution,...
Two methods for the detection of important human pathogens, Cryptosporidium parvum and Helicobacter pylori, were investigated: a fiber optic biosensor...
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cena:
684,90 zł |
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Assessing Bioavailability of Metals in Biosolids-Treated Soils
ISBN: 9781843396796 / Angielski / Miękka / 216 str. Termin realizacji zamówienia: ok. 5-8 dni roboczych. Plant-availability of metals in biosolids-treated soils may be mathematically described by Mt = C x 1 - e- (k x t)] where Mt (mg kg-1) is the cumulative metal removal from the biosolids-treated soils by growing and harvesting plants for t years, C is the total phytoavailable metal pool of the soil (mg kg-1) at t = 0, and k is the metal absorption rate coefficient (yr-1). The total available metal pool, C, is defined as metals extractable by organic acids in the rhizosphere of growing plants and k is related to the kinetics of metal release by organic acids. Half-life of the available metals...
Plant-availability of metals in biosolids-treated soils may be mathematically described by Mt = C x 1 - e- (k x t)] where Mt (mg kg-1) is the cumulat...
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cena:
684,90 zł |
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Metals Removal Technologies for Urban Stormwater
ISBN: 9781843396826 / Angielski / Miękka / 348 str. Termin realizacji zamówienia: ok. 5-8 dni roboczych. This study, on innovative methods for the capture of metals from stormwater, mainly focused on two major areas of investigation: media filters and swales. Twelve media were chosen for initial evaluation. The three best performing media: peat-sand mix, compost, and zeolite were then selected for in-depth study. The results of this investigation emphasize the importance of characterizing the stormwater before selecting a treatment media since the type and quantity of metals, pH, and other runoff characteristics can vary a great deal between sites.
This study, on innovative methods for the capture of metals from stormwater, mainly focused on two major areas of investigation: media filters and swa...
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cena:
684,90 zł |
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Stormwater Thermal Enrichment in Urban Watersheds
ISBN: 9781843396833 / Angielski / Miękka / 205 str. Termin realizacji zamówienia: ok. 5-8 dni roboczych. Thermal enrichment of coldwater streams by heated stormwater in summer months is often overlooked and even exacerbated by traditional management practices that typically account for flow moderation and pollutant removal only. Initiated in 1999, this study evaluated and identified innovative and traditional approaches to moderate this temperature impact by monitoring and analyzing the hydrologic and thermal regimes of an urban stormwater treatment system consisting of two traditional wet detention ponds and an enhanced natural wetland. Data analysis clearly shows temperature increases in the...
Thermal enrichment of coldwater streams by heated stormwater in summer months is often overlooked and even exacerbated by traditional management pract...
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cena:
684,90 zł |
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Evaluation of Microbial Risk Assessment Techniques and Applications
ISBN: 9781843396840 / Angielski / Miękka / 164 str. Termin realizacji zamówienia: ok. 5-8 dni roboczych. This investigation reviewed and evaluated methodologies used for microbial risk assessment with respect to their applicability for reclaimed water applications. The investigation was comprised of five primary components: a comprehensive database of articles, reports and books describing microbial risk assessment methodologies was established and reviewed. Risk assessment techniques and models were identified for estimating the public health risk from exposure to microorganisms via reclaimed water applications. Two models were identified for further evaluation: a static (individual based) and...
This investigation reviewed and evaluated methodologies used for microbial risk assessment with respect to their applicability for reclaimed water app...
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cena:
684,90 zł |
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Use of Enhanced Biological Phosphorus Removal for Treating Nutrient-Deficient Wastewater
ISBN: 9781843396857 / Angielski / Miękka / 129 str. Termin realizacji zamówienia: ok. 5-8 dni roboczych. Anaerobic/aerobic (AnA) and completely aerobic (CA) laboratory-scale sequencing batch reactors operating on an acetate- and casamino acids-based synthetic wastewater were used to investigate the suitability of the AnA process for treating nutrient?deficient wastewaters in plants that have stringent effluent nutrient requirements. Of particular interest is the case where phosphorus (P)-deficient wastewaters with highly variable influent COD loading are being treated to meet both effluent TSS and P limits. At a 4 d mean cell residence time, AnA activated sludge had an approx. 20% lower P...
Anaerobic/aerobic (AnA) and completely aerobic (CA) laboratory-scale sequencing batch reactors operating on an acetate- and casamino acids-based synth...
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cena:
684,90 zł |
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Identifying and Controlling Municipal Wastewater Odor Phase II
ISBN: 9781843396871 / Angielski / Miękka / 268 str. Termin realizacji zamówienia: ok. 5-8 dni roboczych. This project was undertaken in response to needs by the wastewater treatment industry to better understand the generation of odors from biosolids produced by wastewater treatment plants (WWTPs). Its primary objective is to begin to establish relationships between WWTP process parameters and biosolids odors, so that more effective techniques for minimizing biosolids odors can be developed. The project consisted of a detailed field study involving extensive sampling and analyses at 11 WWTPs across North America with capacities from 13 to 350 million gallons per day (mgd). Biosolids samples were...
This project was undertaken in response to needs by the wastewater treatment industry to better understand the generation of odors from biosolids prod...
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cena:
684,90 zł |
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Development of Practical Methods to Assess the Presence of Bacterial Pathogens in Water
ISBN: 9781843396888 / Angielski / Miękka / 141 str. Termin realizacji zamówienia: ok. 5-8 dni roboczych. The objective of this project was to develop and evaluate a practical technique to indicate the probability of the presence of bacterial pathogens in receiving waters. A practical method was defined as one that would limit the use of defined culture-based microbiological methods, and would be based on: (1) validating indicator organisms that predicted the presence of pathogens, or (2) detection of pathogens by polymerase chain reaction (PCR)-based assays. The study also assessed the utility of PCR-based technology for bacterial pathogen detection with respect to technology transfer to a wider...
The objective of this project was to develop and evaluate a practical technique to indicate the probability of the presence of bacterial pathogens in ...
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cena:
684,90 zł |
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Acclimation of Nitrifiers for Activated Sludge Treatment: A Bench Scale Evaluation
ISBN: 9781843396918 / Angielski / Miękka / 71 str. Termin realizacji zamówienia: ok. 5-8 dni roboczych. Nitrification kinetics were evaluated in bench-scale batch reactors fed with a synthetic wastewater containing approximately 1,000 mg ammonia-nitrogen (NH3-N)/L operated at 5, 10, and 20 day solids retention times (SRTs) and with dewatered biosolids supernatant (1,126 to 1,680 mg NH3-N/L) operated at a 20-day SRT. For the 5- and 10-day SRTs, complete nitrification appeared to be inhibited by the presence of un-ionized ammonia and un-ionized nitrous acid. For the 20-day SRT, near complete nitrification was observed for both substrates. Observed ammonium oxidation rates decreased with...
Nitrification kinetics were evaluated in bench-scale batch reactors fed with a synthetic wastewater containing approximately 1,000 mg ammonia-nitrogen...
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cena:
684,90 zł |
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Producing Class A Biosolids With Low-Cost, Low-Technology Treatment Processes
ISBN: 9781843396932 / Angielski / Miękka / 84 str. Termin realizacji zamówienia: ok. 5-8 dni roboczych. Class A biosolids can be produced using low-cost, low-technology biosolids treatment processes including lagoon storage, air drying, and cake storage. This project reviewed the available literature and municipal agency data about these processes. This report presents design and operating guidelines distilled from the review process. It is designed for wastewater treatment plant (WWTP) managers, operators, and engineers who wish to discern whether these processes, used alone or in combination, might be practically applied at specific plants. This report also describes the U.S. regulatory...
Class A biosolids can be produced using low-cost, low-technology biosolids treatment processes including lagoon storage, air drying, and cake storage....
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cena:
684,90 zł |
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Pathogen Destruction Efficiency In High Temperature Digestion
ISBN: 9781843396963 / Angielski / Miękka / 196 str. Termin realizacji zamówienia: ok. 5-8 dni roboczych. The purpose of this research was to evaluate and compare various thermophilic anaerobic digestion processes for meeting U.S. EPA biosolids Class A pathogen standards. The project was split into three phases. Phase 1 screened three bench-scale thermophilic anaerobic process configurations at three different thermophilic temperatures based on their fecal coliform destruction efficiency. All three of the thermophilic process configurations tested were capable of achieving the Class A fecal coliform standard and were included in Phase 2. In Phase 2, bench-scale anaerobic digesters were fed...
The purpose of this research was to evaluate and compare various thermophilic anaerobic digestion processes for meeting U.S. EPA biosolids Class A pat...
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cena:
684,90 zł |
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