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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 20 of 31 for “"septic systems"”.
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Evaluation of Seven Septic Systems on Representative Soil Settings in Greene County, Missouri
On-site septic systems are utilized by approximately 30 percent of all housing in the state of Missouri. Properly functioning septic systems are essential in order to remove human waste before it can contaminate water supplies. Common types of septic systems currently used in Greene County, …
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Enhancing the maintenance of septic systems : case study of septic tank maintenance in Jakarta, Indonesia
Thesis (M.C.P.)--Massachusetts Institute of Technology, Dept. of Urban Studies and Planning, 1998.
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Homeowners' knowledge & awareness of septic systems and barriers to septic system maintenance in northwest Indiana: information to enhance agency outreach and education efforts
… Indiana homeowners' knowledge and awareness of septic systems, the maintenance and care actions that homeowners are currently performing, and potential barriers to septic system maintenance. This information is used to make suggestions for effective local outreach and education efforts with the …
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Denitrification as a means of addressing nitrate-contaminated groundwater on Cape Cod, Massachusetts
… and the majority of homes and businesses rely on septic systems. Increased urban development has increased the frequency of installation of septic systems. In many locations, the density of septic systems is greater than the natural ability of the subsurface environment to receive and purify …
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Wastewater Regulation: a Groundwater Protection Strategy For Christian County, Missouri
… can result from inadequately installed septic systems. The amount of contamination is partly reflected by a Total Coliform water study conducted countywide. The county was divided into equitable areas for sampling. Fifty percent of the water samples indicated the water from the well …
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Applications of Wastewater-Based Surveillance Within Rural and Unsewered Communities
… typically treat household wastewater onsite via septic system, remain a barrier to obtaining data that is truly representative of the population. The degree to which resulting data gaps impact WBS datasets has not been explored. Furthermore, these communities, especially when associated with …
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Locating Sources of Bacterial Contamination In the Toms Creek Watershed
… able to identify one presumptive source, namely, septic systems.</p> <p>We found strong seasonal variation in bacterial concentrations where fecal coliform concentrations were highest in the summer and the fall. Our fluorometric analysis to confirm the presumptive sources of septic systems was …
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Evaluation of the performance of five aerated package treatment systems
Nearly 700,000 Virginians depend on septic tanks and other wastewater treatment systems for treatment of household wastes. The Joint Subcommittee Report HJR 7 1987 reported that sixty percent of Virginia's residential septic “systems and drainfields are operating improperly. With the demand for …
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Organic waste management for EBI in Quebec, feedstock analysis
… to use a mix of food waste, dewatered septic systems sludge, poultry manure, wasted activated sludge, grease trap waste and liquid yeast as input for the anaerobic digester.
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Evaluating Alternative Hydraulic Solutions to Limit Nutrient Contamination of an Aquifer in Southern California
… sources for drinking water and they often use septic tanks for their sewer system needs. However, nitrates and other pollutants from septic systems can percolate to the aquifers and deteriorate quality of the groundwater, threatening the public health. This study has developed a groundwater …
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Distribution and Probable Sources of Nitrate in the Seymour Aquifer, North Central Texas, USA
… Aquifer and that agricultural activity and rural septic systems are the likely sources of the nitrate. Inconclusive results emphasized the need for a more comprehensive spatial and temporal water quality monitoring.
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The Spatial Relationship Between Septic System Failure and Environmental Factors in Washington Township, Marion County, Indiana
Underground septic systems thrive or fail based on the relationship with their local environment. This paper explores ways environmental variables such as soil type, tree roots, degree of slope, and impervious surfaces affect on-site wastewater treatment systems. It also discusses the effects each …
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Novel Time-Integrated Quantification of Sediment-Associated Fecal Indicator Bacteria in Rural Alabama Creek with Straight Pipes
… clays preclude the use of conventional septic systems, leading to both failing septic systems and discharge of raw sewage from homes through "straight pipes." The degree to which fecal microbes are associated with the suspended sediment load has important implications for contamination …
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A Study of Land Use-- Determined Water Quality Near Lakeview, Missouri
… lists water contamination due to faulty septic systems as a primary concern for the Ozarks region of Missouri. Pollutants leaching from landfills and sedimentation caused by sheet erosion are also considered threats to water quality. The data presented in this thesis show a strong …
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Iron reduction mediated increases in carbon oxidation and phosphorus precipitation in on-site wastewater systems
… water and human excreta. Onsite wastewater systems (OWSs), referred to as septic tanks, serve approximately 25% of the United States population. Septic systems typically operate under strictly anoxic conditions, and fermentation is the dominant process driving carbon transformation. …
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Algal Biomass Accrual in Relation to Nutrient Availability along a Longitudinal Gradient in the Upper Green River, Kentucky
Nutrient limitation in aquatic ecosystems results from a deficiency in nitrogen or phosphorus levels relative to cellular growth needs. Nutrient limitation of freshwater systems is a function of biotic and abiotic factors. Biotic factors include vascular and nonvascular plant community composition. …
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In Situ Ksat Measurements of Five Fragipan Soils
… decisions, especially in the design of on-site septic systems. The present Natural Resources Conservation Service permeability ratings are educated estimates based on soil morphological properties, that is, these permeability ratings have not been determined under field conditions. Five …
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Comparative examination of Lake Spokane groundwater for nutrient discharge by residential development influence
… proximity to residential development and onsite septic systems in relation to the shore line of Lake Spokane: nearshore, terrace and undeveloped/reference. Samples were taken monthly from March through August 2015. Groundwater samples were analyzed for chloride, ammonium, nitrite plus nitrate and …
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NUTRIENT AND BACTERIA DYNAMICS OF PACKAGE TREATMENT PLANTS IN COASTAL CARTERET COUNTY, NORTH CAROLINA
… of municipal wastewater treatment plants and septic tank systems on water quality, relatively few have focused on package treatment plants. These facilities are common in certain coastal settings where connection to sanitary sewer collection systems is not available and wastewater flows are …
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Septic regulations and suburban development patterns : an analysis based on soil data in Norfolk County, Massachusetts
Urban sanitation systems are fundamental elements of modern urban development. 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 …
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