Global ETD Search
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 29 for “"Septic tanks"”.
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Performance of septic tanks for pharmaceutical removal and their impact to river water quality.
… ecotoxicological hazard to the environment. Septic tanks (STs) treat wastewater of individual houses and small communities in rural and semi-urban areas and are an understudied pathway of surface water contamination. Therefore, the aim of this research was to understand the performance of STs …
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Effects of siting boreholes and septic tanks on groundwater quality in Saint Bonaventure Township of Lusaka District
… authorities in Lusaka have allowed use of septic tanks and boreholes in the same area in some Townships. St. Bonaventure located about 7km from Town center to the south in Makeni is one of such areas. Lusaka City is built on a marble which is cut by a network of fissures that are open …
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Effects of siting boreholes and septic tanks on groundwater quality in Saint Bonaventure Township of Lusaka District
… authorities in Lusaka have allowed use of septic tanks and boreholes in the same area in some Townships. St. Bonaventure located about 7km from Town center to the south in Makeni is one of such areas. Lusaka City is built on a marble which is cut by a network of fissures that are open …
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Changes in Septic Tank Effluent Due to Water Softener Use
The compatibility of home water softeners and septic tanks is of concern for the on-site wastewater treatment community. Research has shown that high sodium levels in activated sludge plants can lead to deflocculation and poor effluent quality. Therefore, it is logical to assume that high sodium …
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Distribution and Transport of Nitrate in an Unconfined Alluvial Aquifer, Carson Valley, Douglas County, Nevada, 2009.
… 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 water. The majority of these domestic wells are screened in an unconfined alluvial aquifer with most …
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Septic tank nutrients in groundwater entering Lake Sallie, Minnesota
<p> The nutrient contribution of septic tanks to a lake was evaluated at Lake Sallie, in glacial outwash terrain of northwestern Minnesota. Groundwater entering the lake was collected by covering 0.258 m2 of lake bed with a bottomless cylinder vented to deflated plastic bag. Inflow velocity ranged …
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Wastewater Management Plan For Unincorporated Taney County, Missouri
Septic tank-soil absorption system have universally 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, …
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Sources of nitrate in northwestern Nevada groundwater, 1985-2014 of the requirements for the degree of Master of Science in Hydrogeology
… low-residential, and high-residential land), septic tank density, soil properties (well vs poorly drained), depth to water, and geology. A Kendall's Tau rank correlation test was used to determine trends in groundwater nitrate concentrations over the 30 years between 1985 and 2014. On the …
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The status of water and sanitation in newly planned residential areas in Lusaka: a case of Kwamwena valley
… residents are private boreholes with elevated tanks and submersible pumps (58.3 percent), hand pumps (20 percent), communal taps (3.3 percent) and shallow wells (3.3 percent) while others did not have onsite water (13.6 percent). For sanitation, results indicated that the main sanitation …
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Measuring faecal sluge stabilization and its relation to dewatering performance.
… containment facilities such as pit latrines and septic tanks. This is because FS is mainly comprised of 80 – 95 percent water and readily degradable organic matter. Based on field observations, Faecal Sludge is normally stabilized (offering limited scope for further stabilization at treatment) …
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The status of water and sanitation in newly planned residential areas in Lusaka: a case of Kwamwena valley
… residents are private boreholes with elevated tanks and submersible pumps (58.3 percent), hand pumps (20 percent), communal taps (3.3 percent) and shallow wells (3.3 percent) while others did not have onsite water (13.6 percent). For sanitation, results indicated that the main sanitation …
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Measuring faecal sluge stabilization and its relation to dewatering performance.
… containment facilities such as pit latrines and septic tanks. This is because FS is mainly comprised of 80 – 95 percent water and readily degradable organic matter. Based on field observations, Faecal Sludge is normally stabilized (offering limited scope for further stabilization at treatment) …
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The Impact of Land Use on Water Quality: a Comparison of the Roaring River and Piney Creek Drainage Basins of Southwest Missouri
… agricultutre, which includes poultry houses, and septic tanks.
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Assessment of high-value near-term engineering innovations for Indian sanitation
… The test case demonstrates quantitatively that septic tanks, a ubiquitous on-site sanitation method, are likely to be unsuitable for people with lower-than-average available land areas and abilities to pay. By quantifying the deficiencies of current sanitation technologies, the proposed …
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Decentralized Sanitation Systems for Densely Populated Regions: Design, Prototyping, and Systems Value Analysis
… community as easily as water flows. Toilets with septic tanks and latrines are the primary repositories for human waste today. However, the essential subsequent task of disposing that fecal sludge or septage is rarely done in a safe manner. A lack of safe, official dumping sites means this sludge …
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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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HOW SEWAGE POLLUTION AFFECTS DISTRIBUTION AND LIFE HISTORY TRAITS OF THE SOUTHERN HOUSE MOSQUITO, CULEX QUINQUEFASCIATUS
… is from untreated sewage discharging from septic tanks. This causes a variety of environmental issues including harmful algal blooms, harming natural predators, and increased production of mosquitoes. <em>Culex quinquefasciatus</em> is the vector of West Nile Virus in St. Tammany Parish, …
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Investigation of Groundwater Quality in Unincorporated Greene County, Missouri
… single family residential dwellings utilizing septic tank waste disposal systems. The results of this project indicate that the status of groundwater quality in the study area is generally favorable. Problem areas were identified however, based upon the bacteriological contamination of water …
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Climate Change and its Potential Impacts on Construction in Ireland: The Argument for Mitigation and Adaptation
… wastewater management, in the context of septic tanks; and to analyse their implications for current and future Building Regulations. Current and projected future wind-driven rain values were calculated. The likely outcomes were found to be greater building deterioration, increased …
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The effect of three holding tank chemicals on anaerobic wastewater treatment
Sewage-holding tanks aboard recreational boats store human wastes, thereby preventing the direct discharge of wastewater to the aquatic environment. Water-conserving toilets and limited holding tank volumes produce a highly concentrated waste that must be periodically dumped to a wastewater …
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