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Results 1 - 10 from 119 for nitrate nitrogen in 0.389 sec.

The Great Plains/Rocky Mountain HSRC - Riparian Poplar Tree Buffer Impact on Non-point Source Surface Water Contamination: A Paired Agricultural Watershed Study
In-stream water sampling stations have been monitored to measure water quality parameters. The nitrate nitrogen flow from an unbuffered watershed was consistently above the EPA MCL while the buffered ... subsurface flows crossing the border. Tile drainage was the primary source of in-stream nitrate nitrogen. Little nitrate appeared to be added to the stream by base flow after the water flowed ...
www.engg.ksu.edu

Wastewater - Minnesota Pollution Control Agency
Resources Minnesota River Basin General Phosphorus Permit — Phase 1 Understanding the MPCA's Groundwater Nitrate Nitrogen Policy for Large, Subsurface Wastewater-treatment Systems (LSTSs) LSTS Permitting Letter, August 2002 Water Quality ...
www.pca.state.mn.us

Case Study - Integrated Systems - HACH ENVIRONMENTAL
Fork of the West Nishnabotna River near Corley, Iowa. Parameters tracked include dissolved oxygen, turbidity, nitrate-nitrogen, temperature, total dissolved solids, pH and conductivity. The project will operate 24 hours a day ...
www.hydrolab.com

Global Water Catalog Page
Chlorides, includes salinity test procedure Uses potassium chromate-silver nitrate reaction 0 to 200 ppm 2 Colorimetric Tests Test parameter Test method ... , 5.0, 6.0, 7.0, 8.0, 9.0, 10.0 - Nitrate-Nitrogen Quartet comparator method, uses the modified A.P.H.A. reagent ... , 6.0, 8.0, 10.0 ppm) 4 Ammonia-Nitrogen Octet comparator procedure for ammonia nitrogen by the Nessler method 1.0 ppm to 8.0 ...
www.omniinstruments.ie

Suburban Water Testing Labs:Nitrate Fact Sheet
Treatment: Ion exchange, Reverse osmosis, Electrodialysis Details: Source: Nitrates and nitrites are nitrogen-oxygen chemical units which combine with various organic and inorganic compounds. The ... tend to be converted to nitrate, so all sources of combined nitrogen, particularly organic nitrogen and ammonia, should be considered as potential nitrate sources. Primary sources of organic ...
h2otest.com

MicroSepTec - Engineers & Architects - System Overview
Nitrate formed during nitrification is removed by heterotrophic organisms under anaerobic conditions through conversion to gaseous nitrogen species through denitrification13, 15, 16. In this process, nitrate first is ... -6 mg of BOD per mg of Nitrate-Nitrogen removed, and it produces about 3 mg of carbonate alkalinity per mg of Nitrate-Nitrogen removed. The biodegradable organic carbon, that ...
microseptec.com

MicroSepTec - Regulators - System Overview
Nitrate formed during nitrification is removed by heterotrophic organisms under anaerobic conditions through conversion to gaseous nitrogen species through denitrification13, 15, 16. In this process, nitrate first is ... -6 mg of BOD per mg of Nitrate-Nitrogen removed, and it produces about 3 mg of carbonate alkalinity per mg of Nitrate-Nitrogen removed. The biodegradable organic carbon, that ...
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Le rôle des légumineuses dans la pollution par les nitrates
In Germon, J.C. Management systems to reduce impact of nitrates. Elsevier Applied Science, Londres. 274 pages. Owens, L.B. 1990. Nitrate-nitrogen ... an abandoned feedlot to prevent deep percolation of nitrate-nitrogen. Soil Science, 126:237-243. Smith, M.S. et J.J Vargo. 1987. Abatement of nitrate pollution in groundwater and surface runoff ...
www.eap.mcgill.ca

Nitrogen TMDLs
Los Angeles River were established. Reaches of the Los Angeles River and its tributaries were listed as impaired for nitrogen compounds (ammonia, nitrate, and nitrate) and related effects such as algae, pH, odor, and scum on the StateÕs 2002 303(d) list. These reaches were listed because numeric and narrative water quality objectives for nitrogen ...
lastormwater.org

Nitrate in California Groundwater Symposium
Nitrate Loading, Transport and Aquifer Vulnerability Studies Nitrate source attribution using isotope tracers or co-contaminants Characterization of nitrate source loading; reconciling soil-zone models with subsurface models Characterization of nitrogen ...
grac.org