Assessment And Improvement Of Performance Of Septic Systems In Cold Climates (Year 1),
2021
South Dakota School of Mines and Technology
Assessment And Improvement Of Performance Of Septic Systems In Cold Climates (Year 1), Stu Geza, Todd Menkhaus, Lianping Li, Galen Hoogestraat
SDWRI Publications and Reports
Onsite septic systems are used for wastewater treatment for households not connected to sewers. There is a concern about surface and groundwater pollution when effectiveness becomes limited due to soil texture, soil temperature, neighborhood density, and distance to water resources. The goal of this study was to assess treatment performance of local soils and selected treatment media. Lab-scale column experiments were conducted using wastewater from Wastewater Reclamation Facility in Rapid City. The experiments were conducted inside and outside the lab to evaluate the effect of temperature. The columns outside the lab were subject to seasonal variation in temperature. Moisture content, …
Terra Dispositions: A Lithospheric Investigation Of Wet-Matter,
2021
Syracuse University
Terra Dispositions: A Lithospheric Investigation Of Wet-Matter, Alec Rovensky
Architecture Senior Theses
Human intervention of the landscape by damming, filling wetlands and over-extracting is resulting in the rapid perversion of water bodies through the desertification or flooding of terrain and the ensuing contamination of reservoirs. In turn, these changes are disrupting ecosystems, reshaping geological borders, and causing irreversible damage that poses a threat to clean water supplies. As humans exert agency over local hydrology, there is scarce consideration of the ensuing ecological consequences. This thesis aims to expose the ecological transformations of territories laced with human agency by examining the residues left by water in order to deviate from the misplaced nostalgia …
Sediment Phosphorus Release At Lake Fayetteville, Summer 2020,
2021
University of Arkansas, Fayetteville
Sediment Phosphorus Release At Lake Fayetteville, Summer 2020, Brian E. Haggard, Abbie L. Lasater, Morgan B. Dulin, Bradley J. Austin
Arkansas Water Resources Center Technical Reports
The purpose of this project was to evaluate the release of dissolved phosphorus (P) from bottom sediment at Lake Fayetteville, and the potential use of aluminum sulfate (Al2(SO4)3) to remediate the P stored and released by bottom sediments. Intact sediment cores (n=18) were taken at three locations, named inlet, mid and dam sites at Lake Fayetteville. The cores were incubated with 1 L of overlying water with light excluded and bubbled with air (half, aerobic treatment) and N2 (other half, anaerobic). Water samples were pulled and analyzed for soluble reactive P (SRP), and that water was replaced with filtered lake …
Donnelly River Model Review,
2021
CSIRO
Donnelly River Model Review, Justin Hughes
Natural resources commissioned reports
The Donnelly River Model was prepared for the Department of Water and Environment Regulation (DWER) by an external consultant (Hydrology and Risk Consultants) in 2018. The purpose of this model was largely to evaluate the feasibility of a proposed irrigation development centred on diversions from the Middle Donnelly near Chappel's Bridge into a reservoir in the nearby Record Brook catchment. As a part of the model build and reporting process, the HARC (2018) report was reviewed by Ecological Australia (2018) against the model specifications. ECL concluded that the model was "fit for purpose", but made many recommendations. Since report release, …
Functionalized Carbon Nanotubes (Cnts) For Water And Wastewater Treatment: Preparation To Application,
2021
Tunghai University
Functionalized Carbon Nanotubes (Cnts) For Water And Wastewater Treatment: Preparation To Application, Mian Muhammad-Ahson Aslam, Hsion-Wen Kuo, Walter Den, Muhammad Usman, Muhammad Sultan, Hadeed Ashraf
Water Resources Science and Technology Faculty Publications (Archived)
As the world human population and industrialization keep growing, the water availability issue has forced scientists, engineers, and legislators of water supply industries to better manage water resources. Pollutant removals from wastewaters are crucial to ensure qualities of available water resources (including natural water bodies or reclaimed waters). Diverse techniques have been developed to deal with water quality concerns. Carbon based nanomaterials, especially carbon nanotubes (CNTs) with their high specific surface area and associated adsorption sites, have drawn a special focus in environmental applications, especially water and wastewater treatment. This critical review summarizes recent developments and adsorption behaviors of CNTs …
The Pandemic, Climate Change And Farm Subsidies,
2021
University of Arkansas, Fayetteville
The Pandemic, Climate Change And Farm Subsidies, Allen H. Olson, Edward J. Peterson
Journal of Food Law & Policy
Many people believe that once the COVID-19 pandemic has passed, life will return to the way it was. This belief is both unrealistic and dangerous. It is unrealistic because the virus will be around for years if not indefinitely. The timeframe for the worst of the pandemic will depend on our ability to administer effective vaccines worldwide and the public’s willingness to accept continued social distancing in the meantime. The damage done to public health, the economy and individuals is already substantial and will get worse. Recovery will be slow and incomplete. The belief that life will return to the …
Sustainability Of Modern Groundwater Pumping Technologies, Life Cycle Assessment,
2021
United Arab Emirates University
Sustainability Of Modern Groundwater Pumping Technologies, Life Cycle Assessment, Hesham Mahmood Alshehabi
Theses
The sustainability of groundwater equipment systems is not well addressed in the Gulf Cooperation Council Countries (GCC). The typical technology practiced in the GCC is the borehole pumps coupled with asynchronous motors. This thesis is evaluating the sustainability of various alternatives for groundwater equipment through the three pillars of sustainability. Economic assessment seeking the Levelized cost of water given typically in $/m³ and main factors affecting the energy intensity through a statistical comparative analysis approach. Environmental evaluation through performing a life cycle assessment model for four pumping alternatives, and finally, societal impact assessment aiming to identify the best practices and …
Long-Term Changes In Soil Surface Properties As Affected By Management Practices In A Wheat-Soybean, Double-Crop System,
2021
University of Arkansas
Long-Term Changes In Soil Surface Properties As Affected By Management Practices In A Wheat-Soybean, Double-Crop System, Machaela Morrison
Crop, Soil and Environmental Sciences Undergraduate Honors Theses
Long-term agricultural sustainability and productivity are controlled by the integrative effects of different management practices on the soil. Many Arkansas producers use the double-crop system to grow soybeans [Glycine max (L.) Merr] and wheat (Triticum aestivum L.). Studying combinations of different, non-traditional, alternative agricultural techniques may help producers better understand the long-term implications of various management practice options on sustainability and productivity. The objective of this study was to evaluate the effects of agricultural management practices, including residue level, tillage, irrigation, and burning, and soil depth on the change in various soil properties from 2010 to 2020 in …
Treatment Of Produced Water Using Ferrate (Vi) And Directional Solvent Extraction,
2021
Texas A&M University-San Antonio
Treatment Of Produced Water Using Ferrate (Vi) And Directional Solvent Extraction, Sean X. Thimons
Water Resources Science and Technology Theses and Graduate Research Reports (Archived)
Oil field fracking operations creates by-product “produced water” that is highly variable in composition and difficult to treat. This study aims to examine two novel treatment processes together in improving the quality of a synthetic, hypersaline produced water, and examines if effluent would be suitable for reuse. Here, we examine the ability of ferrate (VI) to coagulate organic and inorganic compounds to reduce turbidity while the efficacy of diisopropylamine (DIPA) in water extraction from the subsequent hypersaline solutions was also assessed under a variety of temperature ranges. For the final product water that is separated and treated through both processes, …
The Influence Of Peer Irrigators On The Extensive And Intensive Margin Of Irrigation Techniques,
2021
University of Arkansas, Fayetteville
The Influence Of Peer Irrigators On The Extensive And Intensive Margin Of Irrigation Techniques, Victoria Bailey
Graduate Theses and Dissertations
We examine how irrigation techniques in use by family and friends influence the use and share of land utilizing different irrigation techniques by Arkansas producers. A bivariate sample selection model simultaneously estimates how farm characteristics determine the use and explain the share of a farm that utilizes an irrigation technique. We find that the irrigation techniques in use by family and friends do affect the irrigation techniques a producer uses and the share of acres utilizing different irrigation techniques. A producer with a family or friend that uses end-blocking irrigation is 41% more likely to use end-blocking themselves. Having a …
Presence Of Severe Acute Respiratory Syndrome Coronavirus 2 In Urban Streams Receiving Sewer Overflow, Louisville, Kentucky, Usa.,
2021
University of Louisville
Presence Of Severe Acute Respiratory Syndrome Coronavirus 2 In Urban Streams Receiving Sewer Overflow, Louisville, Kentucky, Usa., Cullen Hunter
Electronic Theses and Dissertations
Pathogens may enter surface waters as they are shed in human feces and potentially delivered to surface waters via sewer overflows, particularly in the eastern United States. This study examined of the presence of fecal indicators in two forks of Beargrass Creek in Louisville, Kentucky. Surface water grab samples (N=30), sediment samples, water quality, and a paired wastewater surveillance study were analyzed. SARS-CoV-2 was detected in a single stream sample despite ubiquitous presence of the virus within the area in wastewater and consistent evidence of a human fecal indicator. These findings demonstrate the need for more green and gray infrastructure …
Characterization Of Problematic Red Clay Soils In Arkansas For The Purpose Of Onsite Wastewater System Placement,
2021
University of Arkansas, Fayetteville
Characterization Of Problematic Red Clay Soils In Arkansas For The Purpose Of Onsite Wastewater System Placement, Bailey Darnell
Graduate Theses and Dissertations
Distinguishing between red-clay soils that are non-expansive and can reduce and red-clay soils developing in problematic red parent material, which are expansive, but also non-reducing, is key for proper on-site wastewater system placement. The Arkansas Department of Health allows for the placement of on-site wastewater systems in certain red-clay soils that have the potential to reduce, but only in the Ozark Highlands [Major Land Resource Area (MLRA) 116A], which is referred to as the red-soil exception. There is currently little scientific data to support the geographic restriction of the red-soil exception. The objectives of this study were to: i) confirm …
Epa Applications To Identify Headwater Watershed Changes And Best Management Practices In The San Bernardino National Forest,
2021
California State University, San Bernardino
Epa Applications To Identify Headwater Watershed Changes And Best Management Practices In The San Bernardino National Forest, Sandra Ukaru
Electronic Theses, Projects, and Dissertations
The human-environmental landscape influences water quality across highly variable spatiotemporal scales. One such example is the human-environmental landscape in California, which has changed dramatically over the past several decades leading to a multitude of environmental issues including the reduction and impairment of water resources. This study compares surface water quality at four headwater streams in the San Bernardino National Forests using multiple assessment tools including in situ data, the Environmental Protection Agency (EPAs) Model My Watershed Tool and multiple databases within a GIS framework. These collective efforts enabled headwater watershed landscape changes and the extent of impacts to soil erosion …
Drinking Water: Iron And Manganese,
2021
University of Nebraska-Lincoln
Drinking Water: Iron And Manganese, Bruce I. Dvorak, Becky Schuerman
Department of Civil and Environmental Engineering: Faculty Publications
Iron and manganese are two naturally occurring drinking water contaminants that can cause poor taste and odor issues, and be associated with discoloration that leads to staining of fixtures, dishes, and laundry. They are primarily found in Eastern Nebraska groundwater and most people mention these issues when iron levels exceed 300 micrograms per liter (µg/L) and manganese levels exceed 50 µg/L. Levels of iron can be much higher and are not associated with health concerns but manganese concentrations above 300 µg/L may pose a health issue for rice or soy formula-fed infants. Higher levels, over 1,000 µg/L, may pose a …
Factors Affecting Irrigation Water Use In Southwest Missouri And Soil Microbial Response To Irrigation And Crop Residue,
2021
Missouri State University
Factors Affecting Irrigation Water Use In Southwest Missouri And Soil Microbial Response To Irrigation And Crop Residue, Shirley M. Dobbs
Graduate Theses/Dissertations
Sustainable use of water resources in Southwest Missouri requires a better understanding of factors that influence groundwater use by crop producers. The objective of this study was to assess the influence of weather patterns and edaphic factors on water used for agricultural irrigation. Groundwater withdrawal data from 14 high-use agricultural irrigation wells were monitored between 2009 and 2016 as part of the Southwest Missouri Irrigation Project. Stepwise and linear regression was used to assess the relationship of weather and edaphic factors in response to annual water use from each well. Precipitation volume, number of precipitation events, average maximum and minimum …
Low Impact Development: Low-Maintenance Design To Encourage Residential Adoption Of Sustainable Systems,
2021
University of Arkansas, Fayetteville
Low Impact Development: Low-Maintenance Design To Encourage Residential Adoption Of Sustainable Systems, Haley Ellis
Biological and Agricultural Engineering Undergraduate Honors Theses
Residential adoption of low-impact development (LID) technology can positively impact downstream watershed hydrology by reducing total volumetric discharge from the residential site. This reduction can provide economic, environmental, and social benefits for the residents as well as the community at large. Additionally, homeowners are often affected by stormwater related issues, like flooding or washout, that could be easily mitigated with a sustainably engineered LID structure or network. Engineering for sustainability often includes the blending of several objectives to provide greater overall benefit. This thesis compares the outflow characteristics of three low-maintenance residential LID design scenarios differing in rain garden soil …
Estimating Irrigation In Rice Fields With A Water Balance Approach,
2021
University of Arkansas, Fayetteville
Estimating Irrigation In Rice Fields With A Water Balance Approach, Kristen Trinh
Biological and Agricultural Engineering Undergraduate Honors Theses
Global food production must increase to meet the demand associated with increased population growth, so irrigation water use will continue to rise. Therefore, it is important to monitor water usage particularly when an irrigation flowmeter is unavailable. A field water balance was created for a selection of rice fields in East-central Arkansas under observation in 2018 and 2019. From those, irrigation inputs are deduced from the water balance alone. First, each field had sensors that collected water table level (WTL) data. Next, other water inputs and outputs such as precipitation and evapotranspiration (ET) were collected from two modeled sources. The …
A Fusion Of Remotely Sensed Data To Map The Impervious Surfaces Of Growing Cities Of Punjab, Pakistan,
2021
University of Nevada, Las Vegas
A Fusion Of Remotely Sensed Data To Map The Impervious Surfaces Of Growing Cities Of Punjab, Pakistan, Binita Shrestha
UNLV Theses, Dissertations, Professional Papers, and Capstones
Urban population is expected to exceed 70% of the world’s total by the middle of the 21st century. Thus, growth in number as well as the sizes of the cities are certain in the near future. The urbanization rates will be much higher in the developing countries than the developed. Such phenomena are accompanied by conversion of land cover from its natural use to built up environment to accommodation growing population. Built up surfaces include road networks, buildings, parking lots and pathways. They are permanently impervious and hydrologically active surfaces. Large volume and discharges of runoff characterize impervious surfaces with …
Degradation Of Antibiotics In Aqueous Phase Using Pms Catalytic Decomposition With Zero-Valent Iron Nanoparticles Immobilized In Sba-15,
2021
University of Nevada, Las Vegas
Degradation Of Antibiotics In Aqueous Phase Using Pms Catalytic Decomposition With Zero-Valent Iron Nanoparticles Immobilized In Sba-15, Ahdee Bluma Zeidman
UNLV Theses, Dissertations, Professional Papers, and Capstones
Zero-valent iron nanoparticles (nZVI) have been studied as an option for soil remediation and water treatment for many years. The capability of nZVI to produce oxidation/reduction processes, depending on the reaction conditions, has attracted great interest with their major drawback being reactivity loss through agglomeration. The loss in nZVI surface area has been reported to be prevented through immobilization onto a porous media (e.g., SBA-15, MCM-41, or zeolites). In this work, a mesoporous silica structure (SBA-15) is used as an nZVI supporting material to enhance its reactivity and promote peroxymonosulfate (PMS) catalytic decomposition for the degradation of antibiotics in aqueous …
Estimation Of Spatial Change In Cropland Area And Evaluation Of Irrigation Performance In Imperial Valley Using Remotely Sensed Data,
2021
University of Nevada, Las Vegas
Estimation Of Spatial Change In Cropland Area And Evaluation Of Irrigation Performance In Imperial Valley Using Remotely Sensed Data, Usha Poudel
UNLV Theses, Dissertations, Professional Papers, and Capstones
The Imperial Valley (IV) in the US is an extensively irrigated agricultural region, which includes multiple crops changing on an annual and semiannual basis. The valley is facing grave concerns about water management due to its semi-arid environment, water intensive crops, and limited water supply. A simple, inexpensive, and repeatable method to detect changes in cropping patterns may assist irrigation managers to understand crop diversification and associated consumptive use. In addition, a spatial assessment of existing water irrigation system performance and productivity is crucial to benchmark and improve current water management strategies. This thesis estimates the spatial pattern of change …
