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Articles 1 - 4 of 4
Full-Text Articles in Engineering
Characterizing Accumulated Oxidation Pond Biosolids At The Arcata Wastewater Treatment Facility, Joshua M. Martinez
Characterizing Accumulated Oxidation Pond Biosolids At The Arcata Wastewater Treatment Facility, Joshua M. Martinez
Cal Poly Humboldt theses and projects
Oxidation ponds (OPs) are a natural wastewater treatment system that have been used internationally for their low maintenance, cost, and technology characteristics. The City of Arcata has relied on the performance of their two-oxidation ponds for the past 50 years to meet National Pollutant Discharge Elimination System (NPDES) discharge permit requirements. However, during specific times of the year and after decades of operation and minimal maintenance, these oxidation ponds serve as a source of solids and nitrogen that create stress for downstream components of the system. As bio solids have accumulated, the hydraulics of the OPs have deteriorated and the …
Building Energy Modeling And Techno-Economic Feasibility Analysis Of Zero Net Energy Tiny Homes In Coastal Humboldt County, California, Jeffrey Alan Harkness
Building Energy Modeling And Techno-Economic Feasibility Analysis Of Zero Net Energy Tiny Homes In Coastal Humboldt County, California, Jeffrey Alan Harkness
Cal Poly Humboldt theses and projects
This thesis conducts a techno-economic feasibility analysis of tiny homes. Scenarios generated using a mathematical and physical model of energy use of zero-net energy tiny homes in coastal Humboldt County are compared with conventional energy systems powered by fossil-fuels for lifecycle economic cost, energy efficiency, greenhouse gas emissions, and energy use. A residence of 2,425 ft.2 (near the regional average) is simulated to offer a broader standard of comparison. A tiny home village model with outlying bedrooms and a central building for cooking, laundry and shower facilities is compared to a standalone tiny home model. A community services building …
Techno- Economic Feasibility Study Of Solar Water Pumping For Public Facilities In Nigeria, Anamika Singh
Techno- Economic Feasibility Study Of Solar Water Pumping For Public Facilities In Nigeria, Anamika Singh
Cal Poly Humboldt theses and projects
This thesis presents a techno-economic feasibility analysis of solar water pumping systems in public facilities located in rural parts of Nigeria. Three different public facilities namely, a primary health care center in Ibwa (PHC, Ibwa), a comprehensive health care center in Kwali (CHC, Kwali), and the LEA Primary School in Mapa (LEA School, Mapa), all located in Federal Capital Territory (FCT) of Nigeria, were analyzed. The facilities considered in the study have varying levels of water demand (micro, small, and medium), and they are used as cases to establish the techno-economic suitability of solar water pumping systems to deliver water …
Assessment Of Uv Light For The Treatment Of Cyanotoxins In Small-Scale Drinking Water Treatment Systems, Ryan Spencer Mclintock
Assessment Of Uv Light For The Treatment Of Cyanotoxins In Small-Scale Drinking Water Treatment Systems, Ryan Spencer Mclintock
Cal Poly Humboldt theses and projects
Harmful Algal Blooms (HABs) are commonly caused by the rapid growth of cyanobacteria in fresh waterways, which many people rely on for drinking water. When a HAB occurs, a variety of cyanotoxins can be produced and released into sources of drinking water, which can make people sick or die if not properly treated. Two of the most common toxins are microcystin-LR (MC-LR) and anatoxin-a (A-a), for which the World Health Organization (WHO) recommends a maximum allowable concentration of 1 µg/L in drinking water to avoid health risks. The recommendation for maximum allowable concentration was calculated specifically for microcystins, but is …