water biological oxygen demand Articles
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Impact of agricultural activities on phosphorus in streams draining into Opa Reservoir Ile Ife, Nigeria
Phosphorus is noted as the limiting factor of eutrophication. We investigated the impact of different agricultural land use (mixed cropping, horticultural garden and fallow land) on the phosphorus loading of a reservoir. Soil samples were analysed for pH, particle size distribution, organic matter, available P and erodibility index calculated. Water samples analysed for biological oxygen demand ...
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Metalworking Fluids, Cutting Liquid, Oil in Water Emulsions Wastewater Treatment
In manufacturing metalworking fluids are widely used for cooling, cleaning, and lubrication of workpieces, resulting in a great amounts of wastewater. It is estimated that the worldwide annual usage of cutting fluids exceeds 2x10^9 L and the waste could be more than ten times the usage, as the metalworking fluids have to be diluted prior to use. The treatment of oily wastewater is problematic ...
By YASA ET
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The application of surface engineered silica for the treatment of sugar containing wastewater
The removal of sucrose and fructose from water at various high concentrations by surface engineered silica (SES) was studied using dissolved sugar in pure water. The results indicate that sugar at concentrations of up to 800 g/L can be removed by SES at a relatively high dose of 250 to 300 g/L. Based on these results, process water from a soft drink filling station which was contaminated by ...
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Relationship between land use and water quality in a small watershed in South Korea
Recent research and monitoring undertaken by various institutions have emphasized measurements of river-water quality. Based on the results, government agencies have set guidelines to improve river-water quality management. However, the relationship between water quality and land use/land cover (LULC) has not been examined closely in South Korea to date. This study investigated this relationship ...
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Municipal wastewater characteristics in Thailand and effects of soft intervention measures in households on pollutant discharge reduction
In developing countries with large Millennium Development Goals (MDGs) sanitation indicator, pollutant discharge reduction function of wastewater treatment systems should be considered. In this paper, pollutant generations per capita (PGCs) and pollutant discharges per capita (PDCs) are estimated as a base dataset for wastewater management in Thailand. PDCs of black water, i.e. toilet wastewater, ...
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Real-Time Organic Loading Monitoring for Municipal Wastewater Treatment
Summary Operational decisions can be difficult to make when incoming wastewater quality fluctuates. Industrial manufacturers can discharge highly concentrated wastewater unexpectedly causing operational problems if not detected. Aside from potential operational problems, shock loading also has the potential to affect regulatory compliance if wastewater cannot be treated properly. Monitoring ...
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