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 104 for “"biosolids"”.
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Dewatering Of Biosolids By Sodium Ferrate
… of the liquid form of ferrate for dewatering of biosolids from wastewater treatment facilities. Two different ferrate products prepared using calcium hypochlorite and sodium hypochlorite were used. Samples of anaerobic digested sludge and waste activated sludge with solids content of 2.1% and …
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Mesophilic fermentative hydrogen production from sewage biosolids
… alternative energy vector. Using sewage biosolids as the substrate for fermentative hydrogen production offers several advantages over the use of other biomass sources. It is available at little or no cost and is abundant, being produced wherever there are human settlements, with 1.3 …
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Effect of Process Intensification Techniques on Biosolids Management
… in main and side stream wastewater treatment on biosolids management in terms of anaerobic digestion enhancement, dewaterability improvement, odor mitigation, as well as phosphorus and nitrogen removal. The first part of this study was conducted to understand the effect of anaerobic digester …
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Assessment of Exceptional Quality Biosolids for Urban Agriculture
Biosolids have been used as soil conditioners and fertilizers in agriculture and mine land reclamation, but application of Exceptional Quality (EQ) biosolids to rehabilitate anthropogenic soils for urban agriculture is recent and requires greater study to ensure their appropriate use. The …
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Effects of Biosolids on Carbon Sequestration and Nitrogen Cycling
Land application of biosolids has been demonstrated to improve nutrient availability (mainly N and P) and improve organic matter in soils, but the effects of biosolids on C sequestration and N cycling in the Mid-Atlantic region is not well understood. The objectives were: 1) to investigate soil C …
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Evaluation of Biosolids for Use in Biodegradable Transplant Containers
… was to evaluate the efficacy of using digested biosolids from a regional wastewater treatment plant as an ingredient in creating a biodegradable transplant biocontainer. The biosolids were tested for metals limits as specified by the U.S. EPA Part 503 Rule, and met the requirements for Class B. …
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Biochar in Land Reclamation, Biosolids Applications and Prescribed Fires
… as a stand-alone amendment, in combination with biosolids as a complementary amendment and in-situ through controlled landscape burning. The first was a greenhouse pot study, which involved combining biochar with spoil from an Appalachian surface coal mine to grow trees. Biochar combined with …
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Detection and characterization of antibiotic resistance plasmids in Cheney biosolids
<p>"Biosolids are organic matter produced at the end of sewage treatment process. It has been shown that during sewage treatment, resistant bacteria are selected because of the presence of antibiotics and their byproducts. These resistant bacteria are more likely to transfer resistance genes to …
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Evaluation of Solubilization with Thermal Hydrolysis Process of Municipal Biosolids
The increased demand for advanced sludge stabilization in wastewater treatment facilities over the past decade has led to the implementation of various pretreatment techniques prior to anaerobic digestion. In an attempt to reduce sludge volumes and improve sludge conditioning properties, the use of …
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Biosolids as a source of soil conditioning and fertility for turfgrass
… towards producing exceptional quality (EQ) biosolids to increase recycling rates to land, especially urban areas. Other methods of improving the environmental impact of wastewater treatment includes additions of iron (Fe) to reduce phosphorus (P) concentrations in outgoing treated water and …
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Variation Of Geotechnical Strength Properties With Age Of Landfills Accepting Biosolids
… from wastewater treatment plants called biosolids is sometimes co-disposed along with MSW in landfills. Recent work at the University of Central Florida has focused on the behavior of the mixture of MSW and biosolids. As an increased amount of waste accumulates in these landfills, it …
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Nitrogen Cycling from Fall Applications of Biosolids to Winter Small Grains
… nitrogen (N) leaching loss limit the amount of biosolids applied to winter small grains in Virginia. Ten field studies were established 2012-2014 in Virginia to determine the agronomic and environmental feasibility of fall biosolids applications to soft red winter wheat (Triticum aestivum L.). …
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Investigating the properties of persistent organic carbon in municipal wastewater treatment biosolids
… can accumulate in WWPT sludges or treated biosolids, which are currently subject to limited environmental monitoring or regulation for organic contaminants. The lack of practical tools for assessing the relative quantities of organic contaminants and the potential for these to transfer into …
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Detection of per- and polyfluoroalkyl substances in biosolids from wastewater treatment plants
… study, a method was developed to detect PFASs in biosolids using high-performance liquid chromatography (HPLC) system coupled with high-resolution mass spectrometer (HRMS). A solid phase extraction (SPE) procedure was applied to extract the PFAS analytes from biosolid samples collected from two …
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Biosolids management of chemically enhanced primary treatment plants in Brazil & Southern California
Thesis (M.Eng.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 2000.
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Shear Forces, Floc Structure and their Impact on Anaerobic Digestion and Biosolids Stability
… conducted to address the controlling factors of biosolids stability as they relate to mesophilic anaerobic digestion, dewatering processes and digestion enhancement by wet sludge disintegration technologies. The working hypothesis of this study is that digestion performance; nuisance odor …
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Sequential Anaerobic-Aerobic Digestion: A new process technology for biosolids product quality improvement
… Noxious odor production from the land applied biosolids is another important issue related to digestion efficiency. Existing anaerobic digestion or aerobic digestion processes failed to provide simultaneous solution to biosolids related problems i.e. simultaneous VS reduction, better dewatering …
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Streamside Management Zone effectiveness for protecting water quality following forestland application of biosolids
Biosolids, materials resulting from domestic sewage treatment, are surface applied to forest soils to increase nutrient availability. Retaining streamside management zones (SMZs) can limit nutrient pollution of streams. We delineated 15 m SMZs along three intermittent streams in an 18-year-old …
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