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Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 16 of 16 for “"Wastewater Disposal"”.
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Denitrification in low pressure distribution onsite wastewater disposal systems
… in low pressure distribution, on-site wastewater treatment and disposal systems (OSWTDS) were evaluated in this study. The treatments were surface and subsurface soil horizons; nitrified and non-nitrified wastewaters; 0.5, 1.0, and 1.5 times the Virginia Department of Health (VDH 1989) …
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A comparative study of a conventional and a mound on-site wastewater disposal system in a coastal environment
Wastewater effluents from two absorption systems were studied in the Assateague Island National Seashore Park, during 1993. The study focused on the wastewater effluents from a mound and a conventional on-site wastewater disposal system (OSWDS). The site was characterized by coastal beach soils. …
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Wastewater Management Plan For Unincorporated Taney County, Missouri
… been considered inferior as a means of wastewater disposal. They are generally considered suitable for use only until the dwelling can be connected to a central sewage disposal system. Recent studies, however, have shown that with proper design, construction, and maintenance, onsite …
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Septic regulations and suburban development patterns : an analysis based on soil data in Norfolk County, Massachusetts
… Decentralized, privately operated, on-site wastewater disposal systems have also played an important role in suburban and exurban development over the past fifty years. This research is an attempt to assess the current influence of on-site wastewater disposal technology and regulations on …
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The Geology of Cedar County, Missouri: a Guide For Planners
… areas of geologic hazards, flooding, solid waste disposal, and wastewater disposal. Recommendations to avoid faulted ares, abandoned coal mines and limestone quarries, and flood-prone areas are discussed and should be considered prior to future development.
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Wastewater renovation with soil depth as influenced by additional treatment of septic tank effluent
… marginally suited for installation of on-site wastewater disposal systems. With soil limitations, additional wastewater treatment prior to soil application may allow for a reduction in soil depth. Undisturbed 20-cm-diameter soil columns (fine loamy, mixed, mesic Typic Hapludult), in a factorial …
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The Impact of Certified Pool Operator Training on Swimming Pool Inspection Outcomes
… It mandates inspections on: water supply and wastewater disposal; bathhouses and attendant structures; safety; and general facility operations. However, the regulations do not require the pool operators or inspectors to be certified. There are 120 counties in the Commonwealth of Kentucky and …
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Hydropedology of Problematic Interfluve Transported Soils in the Central Virginia Piedmont
… their saturation regimes because onsite wastewater disposal systems, which are sited based upon soil evaluations, have failed prematurely when installed into these problematic soils. My objectives were to determine if soil morphology was an accurate predictor of soil wetness and …
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Evaluation of shallow-placed low pressure distribution systems in soils marginally suited for on-site waste treatment
… marginally suited for a conventional on-site wastewater disposal system (OSWDS) because of low hydraulic conductivity and shallow depth of soil to bedrock. The soils used for this study were Edom (fine, illitic, mesic, Typic Hapludult) and Penn-Bucks soil (fine-loamy, mixed, mesic, ultic …
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Mathematical and Computational Modeling of Injection-induced Seismicity
… with many subsurface technologies, including wastewater disposal, natural gas storage, enhanced geothermal systems, and hydraulic fracturing. As a result, there has been a growing public concern around the world about the potential seismic hazard and environmental impact of subsurface energy …
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Pharmaceuticals removal in soil following wastewater land application
… are used worldwide and enter the environment via wastewater treatment system effluent discharges. With increasing concern in water reuse, attention is turning to the wastewater resulting in detection of these compounds in several environmental media associated with wastewater stream. One of the …
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Design and optimisation of industrial Water Application Planning (WAP): modelling multi-contaminant processes with regeneration technologies
… of multiple water-using units and regeneration (wastewater treatment technologies), robust flexible approaches that enables faster numerical solutions and handle single and multi-objective cases of WAP problems. This research developed a framework for WAP optimisation that eliminates all the …
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Biological and Chemical Renovation of Wastewater with a Soil Infiltrator Low-Pressure Distribution System
An alternative on-site wastewater treatment and disposal system (OSWTDS) consisting of a soil infiltrator with low pressure distribution was evaluated in a soil that was unsuitable for a conventional OSWTDS under current Commonwealth of Virginia Sewage Handling and Disposal Regulations, due to a …
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Wastewater application to soils: hydraulic and nitrogen considerations
Land application of domestic and industrial wastewaters provides an effective means of recycling water and its components into the ecosystem. Successful treatment by soil requires that wastewater is applied in quantities that both maintain infiltrative capacity of the soil and do not exceed the …
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Maintaining a Nitrogen Cap for Virginia's Potomac River: The Contribution of Alternative Development Patterns
… loading to the Potomac that will result from the wastewater disposal needs of the growing population within the Basin. Furthermore, the state will eventually exhaust its lower cost options for reducing Nitrogen loadings, and at that point the annual cost for maintaining the Nitrogen Cap will begin …
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Distribution and Transport of Nitrate in an Unconfined Alluvial Aquifer, Carson Valley, Douglas County, Nevada, 2009.
… for commercial builders to construct centralized wastewater disposal and drinking water systems. This has resulted in several areas having high septic tank densities (>1.0 septic tanks/ha) with the majority of residents in these areas relying on private domestic wells as a source of drinking …