Browsing by Subject "Waste disposal in the ground"
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Item Conversion of Lubbock Municipal Landfill to city park and recreation area(Texas Tech University, 1997-12) Patanathabutr, PatnarinThis research will explore the possibility of a landfill conversion to create a community asset through the development of parks, recreation resources, and open space. Significant issues that relate to this redevelopment are elaborated. It also presents an analysis for all potential suitabilities of redeveloping the Lubbock Landfill as a future recreation area.Item Quantity and quality of runoff from two biosolids-amended Chihuahuan Desert grassland soils(Texas Tech University, 1997-05) Moffet, Corey AllenWater is a precious resource in the arid west. Communities, both plant and animal, depend on it for basic life functions. Land application of biosoHds on arid and semi-arid rangeland has led to growing interest in determining the hydrologic consequences of this practice. Water, in the form of precipitation, is partitioned into runoff, interception, or infiltration at the active surface. Because the application of biosolids alters the active surface it may be expected that biosolids also will affect infiltration, runoff and erosion. The objectives of this work were to: (1) evaluate the effects of varied rates of biosolids on infiltration, and erosion; (2) examine some of the mechanisms whereby biosolids application affect infiltration and erosion; and (3) find environmental conditions that maximize or minimize the response of infiltration or erosion to biosolids application. A portable single-nozzle rainfall simulator was used to simulate rainfall on 0.5 m^ plots to determine infiltration and erosion. Many factors are considered including soil type; season of simulation; the period of time biosolids are in plots before simulation; vegetative cover: the rate of biosolids applied; and antecedent soil water. Measurements recorded to characterize each plot included canopy cover, surface cover, surface roughness, plot standing crop and liter, and soil morphology to 35 cm depth. Experimentally manipulated factors included soil type, vegetation cover, rate of biosolids applied, and antecedent soil water. Application of biosolids affects infiltration rate, cumulative infiltration and erosion. Biosolids provides ground cover and adds organic matter to the soil. The hydrologic response to biosolids depends on site factors, including soil type and cover and biosolids factors such as rate and batch. Topical application of biosolids has important hydrologic consequences in desert grasslands that depend upon the rate of biosolids applied and is modified by the environment to which the biosolids are applied.Item Simulation of septic system disposal unit(Texas Tech University, 2003-12) Waghdhare, Nilesh S.The specific objectives of this study were to (1) select a suitable three dimensional groundwater flow model capable of performing groundwater flow simulations in the unsaturated media, (2) develop a conceptual groundwater flow model to simulate the conditions pertaining to an ETA drainfield, and (3) apply the numerical groundwater flow model to observed field conditions for the Phase I ETA trenches in order to simulate the effects of seasonal variations on the infiltration and ET patterns around the drainfield.