environmental water management Articles
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Trophic state evolution in a subtropical reservoir over 34 years in response to different management procedures
Despite their importance for water management, long-term studies on trophic state are relatively scarce in subtropical reservoirs. We analyzed total phosphorus (TP), total nitrogen (TN) and chlorophyll a (Chl a) concentrations in the Billings Reservoir (Brazil) over time: Phase 1 (1977–1992, Tietê River water was pumped to Billings to increase energy generation, 100 m3 s−1); Phase 2 (1992–2007, ...
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Sludge characterization at Kadahokwa water treatment plant, Rwanda
A study was carried out to characterize the sludge produced at Kadahokwa Water Treatment Plant (KWTP) in Butare to assess the effectiveness of the sludge treatment and potential impacts of sludge disposal on the environment. Parameters analyzed were chromium, nickel, cadmium, lead, copper, zinc, iron, manganese, aluminium, total nitrogen, total phosphorus, potassium and cation exchange capacity ...
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Evaluation of AnnAGNPS and its applications in a semi–arid and semi–humid watershed in Northwest China
The main goal of this study was to evaluate the performance of AnnAGNPS (Annualised Agricultural Non–Point Source Pollution Model) in simulating runoff, sediment loading and nutrient loading in a semi–arid and semi–humid watershed of an area of 1481sq km, located in Northwest China. This model was first calibrated and tested by historic monitoring data and then the validated model was used to ...
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On site flotation for recovering polluted aquatic systems: is it a feasible solution for a Brazilian urban river?
Pinheiros River (Brazil) plays a pivotal role in supplying water to Billings Reservoir, which presents multiple uses (human drinking, energy generation, irrigation, navigation, fishing and leisure). An intense monitoring program was performed during the years 2007 and 2008 to find out whether on site flotation is a feasible solution or not for improving the water quality of this urban river, ...
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The world`s largest stormwater alum treatment facility - in Florida
Stormwater in the Florida canal system is slow moving. The green, murky water in the lakes fed by the Apopka-Beauclair canal is caused by an overabundance of algae-feeding compounds, mainly phosphorus, resulting in chronic algal blooms. The Nutrient Reduction Facility (NuRF) project designed a system to inject aluminum sulface (alum) into the nutrient-laden water in direct proportion to the ...
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Nitrate Biosensor - Case Study
BACKGROUND In 1998, Dr. Bill Campbell and his team published a peer-reviewed journal article in Analytical Chemistry on the construction and characterization of Nitrate Reductase-Based Amperometric Electrode and Nitrate Assay of Fertilizers and Drinking Water. This publication set the stage for the nitrate biosensor project. In this publication, we found that nitrate reductase was indeed capable ...
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Manitoba Water Quality Standards, Objectives and Guidelines
Several methods are used in Manitoba to protect, preserve, and, when necessary, rehabilitate water quality. One of these tools is the Water Quality Standards, Goals, and Guidelines. On November 28, 2011, the revised Manitoba Water Quality Standards, Goals, and Guidance were incorporated into regulation under Part Two of the Water Protection Act. The Manitoba Environment Act-issued permits include ...
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