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 35 for “"septic tank"”.
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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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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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Effects of soil texture, soil depth, and treatment on septic tank effluent renovation
… The texture group 2 columns were dosed with septic tank eflluent (STE), constructed wetland effluent (eWE), and recirculating sand filter effluent (RSFE) at 685 cm³ per day and the texture group 3 columns were dosed at 670 cm³ per day with the same effluents. These dosing events were split …
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Comparison of raw wastewater and septic tank effluent composition through literature and field investigations
Includes bibliographical references (pages 143-162).
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Wastewater renovation with soil depth as influenced by additional treatment of septic tank effluent
… soil (15, 30, and 45 cm) and type of effluent (septic tank, constructed wetlands, and recirculating sand filter), were used in this study. Effluent (670 cm³/d) was applied 6 times daily. Additional treatment of septic tank effluent by a constructed wetland and a recirculating sand filter …
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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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The effect of distance between artificial drainage facilities and disposal trenches on the movement of biological and chemical pollutants from septic tank effluent
… from a drainage ditch on the disposal of septic tank effluent. The study was done from September 1979 to August 1981. The soil used is the Tomotley series belonging to the fine-loamy, mixed, thermic family of Typic Ochraquults. Four prototype trenches were installed at 1.5, 3, 6 and 21 m …
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Desired outcomes, unexpected processes : two stories of sanitation maintenance in Erode tenements, India
… infrastructure unusable. This thesis focuses on septic tank maintenance in tenements' in small municipalities in Erode district, India. The findings of this thesis are that the desired outcome of good sanitation maintenance in the Erode tenements is due to variables that are often overlooked in …
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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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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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Etude de l'assainissement non collectif en Afrique Subsaharienne : Application à la ville de Bujumbura
… study also examined the design procedure of the septic tank and of evaluated its performance on site given that it is used in many sanitation systems. Settling column tests were carried out show that the effluent who enters in the septic tank settles well but settable solids remain in the …
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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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Method development and application for measuring representative & potential denitrification rates during wastewater reclamation in soil treatment units
… wastewater system treats wastewater utilizing a septic tank connected to a soil treatment unit. Although soil treatment units provide significant removal of many contaminants such as suspended solids, pathogens and organic content; mass loading of nitrogen remains a top concern. Previous research …
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Environmental Planning of the Ebenezer Quadrangle, Missouri
… of the soils of the study area are unsuitable to septic tank absorption fields and almost 50% of the soils are unsuitable for building sites. By knowing where these environmental constraints exist development can be encouraged to take place in the most suitable sites as well as occurring in the …
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Monitoring of Selected Bacteriological Parameters Associated with the Sinking Creek Total Maximum Daily Load (TMDL).
… Best Management Practices (BMP’s) included; septic tank surveys, and the use of vegetative buffer zones.</p>
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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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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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Applied geology in the Beulah-Hazen area, Mercer County, west-central North Dakota
… three suitability maps for sanitary landfills, septic tank systems, and general construction. A map showing buried valleys, diversion trenches, and meltwater channels was also compiled at a scale of 1:63, 000.</p> <p>The Sentinel Butte Formation (Paleocene) is the only preglacial unit at the …
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Onsite Remediation of Pharmaceuticals and Personal Care Products in Domestic Wastewater using Alternative Systems Including Constructed Wetlands
… a hybrid constructed wetland, all relative to septic tank effluent. The constructed wetland achieved the highest nutrient removals with TN concentrations below 10 mg/L throughout the study. A system with an ATU and peat biofilters achieved the highest removals of persistent pharmaceuticals …
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