Pilot waste-stabilization pond in Tanzania
Article Abstract:
The intensive urbanization of Tanzanian towns led to a report on the wastewater treatment technology report in Dar es Salaam's waste-stabilization ponds (WSP). Physicochemical and bacteriological parameters used in wastewater purification performance in student dormitories were investigated. Results indicate that sanitation, refuse collection, drainage , transport and housing are inadequate in Tanzania. Lack of technological information, funds and management will lead to the deterioration of WSP. An approach to WSP technology based on process and system-oriented research of the past ten years in wastewater treatment processes was presented.
Publication Name: Journal of Environmental Engineering
Subject: Environmental issues
ISSN: 0733-9372
Year: 1992
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Sampling of wastewater effluent
Article Abstract:
Limited water quality sampling gruidelines led to the study of a hydraulic scale model for selecting a representative sampling of wastewater-treatement plant effluent. Case study results indicated that in order to get a representative sampling, determination of concetration fluctuation over time is needed to get an idea of the flow pattern and velocity distribution. Grab sampling is reliable if the flow is well-mixed annd concentrations do not fluctuate. If these conditions do not exist, tolerance levels need to be established before a sampling can be selected. Purpose of the sampling will affect the tolerance level and site selected.
Publication Name: Journal of Environmental Engineering
Subject: Environmental issues
ISSN: 0733-9372
Year: 1992
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Sludge loading rates for forest land
Article Abstract:
Wastewater sludge loading rates of forest lands were estimated using a modeling approach based on ground-water nitrate standards. The forest lands model was adapted from an earlier agricultural lands model and it was applied on a case study of eight forest regions in New York. Results indicate that New York's forests can accommodate a large amount of sludge but slope restriction for liquid sludge restricts the area considerably. Sludge loading in established forests in therefore impractical. Loading rates were found to be affected by the net vegatative uptake of nitrogen of the land.
Publication Name: Journal of Environmental Engineering
Subject: Environmental issues
ISSN: 0733-9372
Year: 1992
User Contributions:
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