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 11 of 11 for “"sanitary sewer"”.
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Kinetics of Hydrogen Sulfide Oxidation in Sanitary Sewer Systems
… using the techniques commonly employed in sanitary sewer systems to determine the effectiveness of each process. To achieve this objective a laboratory simulation of these chemicals additions was carried out using completely mixed BOD bottles as batchreactors. The BOD reactor was filled …
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IMPACTS OF DIURNALLY EXPOSED SLIME LAYER HYDROGEN SULFIDE CONCENTRATIONS IN SEWER ATMOSPHERE
… through odor issues and is a safety concern for sewer workers. Relatively recent development and introduction of H2S data loggers has shown that H2S concentrations in the sewer headspace demonstrate a diurnal pattern that is not explained by current models. Odor complaints and toxicity are …
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Understanding sewer infiltration and inflow using impulse response functions derived from physics-based models
… and inflow (I&I) are extraneous flow in a sanitary sewer system that originate from surface water and ground water. I&I can overload the sewer system and wastewater treatment plants, and cause sanitary sewer overflows (SSOs) or basement flooding. This flow can account for as much as ten …
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Probability based scheduling to optimize sewer maintenance
… Agency) concentrating more on the issue of SSOs (Sanitary Sewer Overflows), sewer failures have been studied much in recent years. This thesis focuses on the blockages of sewer lines, which cause nearly half of the SSOs. A simulation model is developed to analysis efficiency of different …
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An investigation of split treatment for wastewater management under peak flow conditions
… and inflow are not realized;Peak flows from sanitary sewer systems are handled traditionally by building flow equalization facilities or by oversizing the conventional treatment facilities. It was felt that a potential alternative to these practices would be the use of split …
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NUTRIENT AND BACTERIA DYNAMICS OF PACKAGE TREATMENT PLANTS IN COASTAL CARTERET COUNTY, NORTH CAROLINA
… in certain coastal settings where connection to sanitary sewer collection systems is not available and wastewater flows are greater than what is typically processed by septic systems. Package treatment plants discharge treated wastewater effluent onsite either at the surface or in the subsurface. …
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Analysis of wet & dry weather bacterial concentrations within Kranji & Marina Catchments, Singapore
… and point sources. Likely point sources are sanitary sewer leakage due to aging infrastructure in the commercial area. All measured concentrations exceeded Singapore and USEPA's recommended bacterial levels for recreational water. Hence, more wet-weather sampling is recommended in order to …
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iWISE: A Framework for Implementation of Intelligent Water Systems
… has been a rise in instances of Combined and Sanitary Sewer Overflows (CSOs and SSOs), among other related problems. These challenges have intensified the impact of sewershed issues on both society and the environment. Fortunately, recent advancements in technology, such as sophisticated …
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Optimal sensor placement for sewer capacity risk management
… of untreated sewage that escapes combined sewer pipes each year (US EPA 2004a) and the estimated 40,000 sanitary sewer overflows and 400,000 backups of untreated sewage into basements (US EPA 2001). Failures in wastewater collection systems can be prevented if they can be detected in time …
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Cohabiting Third Place: Integrating Natural Hydrology with Healing Architecture
… D.C. mostly depends on the combined storm and sanitary sewer. During heavy rainfall, stormwater overflows the capacity of the sewage system and empties into the river with sewage. But there is an opportunity for the stormwater to be treated and reused at the site. Rainwater along with tapped …
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Zdravotně technické a plynovodní instalace v polyfunkčním domě
Diplomová práce řeší problematiku zdravotně technických a plynovodních instalací novostavby polyfunkčního domu v Kroměříži. Teoretická část se zaměřuje na analýzu tématu. Podrobně popisuje možnosti hospodaření se srážkovými vodami a porovnává principy návrhu dle platných norem a předpisů. …