drinking water nitrate Articles

  • Monitoring Nitrates in Drinking Water and Wastewater

    Nitrate is present in high levels in wastewater due in part to the high nitrates present in human sewage but also from some types of industrial effluent entering the municipal sewer system. Nitrate is also a very common contaminant in both surface water and ground water. Nitrate occurs naturally in source water as a result of decaying plants. However, there are other manmade sources of ...


    By Real Tech Inc.

  • Does calcium in drinking water modify the association between nitrate in drinking water and risk of death from colon cancer?

    The objective of this study was to explore whether calcium (Ca) levels in drinking water modified the effects of nitrate on colon cancer risk. A matched case–control study was used to investigate the relationship between the risk of death from colon cancer and exposure to nitrate in drinking water in Taiwan. All colon cancer deaths of Taiwan residents from 2003 through 2007 were obtained from the ...


    By IWA Publishing

  • Testing for Nitrates in Water, what are the Options?

    Nitrate is a naturally occurring substance in the environment and is commonly found in most water sources, it is usually only a cause for concern in areas where water supplies can be affected by farm runs offs and agriculture, its use as a fertiliser can cause increased levels in water supplies The ...


    By Camlab Limited

  • Nitrate: AQUAMEND™ Denitrification Units (Septic Water)

    The AQUAMEND® process has proven to be successful for the treatment of a wide range of constituents of interest. Much work was performed by Adventus in the area of treatment of high-strength industrial wastewater, with concentrations as high as 3,000 mg/L NO3-N (nitrate as nitrogen). In recent years development focused on use of the technology for the treatment of nitrate from on-site treatment ...


  • Nitrate Removal by Countercurrent Ion Exchange

    Nitrate removal technology by continuous countercurrent ion exchange from potable water. High flow capacity, low waste generation. This ICHEM award winning technology is the industry standard used in the United Kingdom. More than 20 installations installed. PuriTech's patented multi-port valve is at the center of each production skid. At average, each unit produces a maximum waste ...


    By PuriTech Ltd

  • Drinking Water Resource Protection, Germany

    Reference Project: Drinking Water Resource Protection, Germany In the catchment area of a major drinking water supplier in western Germany increasing nitrate concentrations were noticed within a deep water-bearing layer. Although high nitrate concentrations, resulting from regional intensive application of fertilizers, were known from shallow layers in the area, they were new to the deep ...

  • Ionex- Versatile ion exchange technology for Nitrate removal

    Belgian separations technology company PuriTech (www.puritech.be) has designed an ion exchange system that improves liquid–resin contact efficiency while reducing plant operating costs and capital expenditure. Targeted at a broad range of industries, one area where the system is now showing its strength is in the removal of nitrates from drinking water, asPuriTech's Filip ...


    By PuriTech Ltd

  • Nitrate Screening in groundwater and surface water aids study and management

    Tasked with monitoring a watershed covering nearly 4,000 square miles, almost 2,300 miles of rivers and streams, and a huge aquifer that provides drinking water for more than 1.2 million people, water quality monitoring specialists at the Miami Conservancy District (MCD) in Dayton, Ohio, have their hands full. The District – established in 1913 to protect Dayton from flooding – has grown into a ...


    By YSI - a Xylem brand

  • Biological denitrification of drinking water using biodegradable polymer

    The application of Biodegradable Polymer (BDPs), which can serve as biofilm carrier and simultaneously as water insoluble carbon source for heterotrophic denitrification. The external dosing of soluble organic substrate can be therefore avoided and process can be simplified as normal bio-filter. In this paper, the lab-scale experiment was carried out by using the cheap material of PBS, a new kind ...


    By Inderscience Publishers

  • Effect of agro-activities on drinking-water quality in Bangladesh

    Fifty-nine samples of drinking water were collected from various locations in Bangladesh to assess the impact of agricultural practices on groundwater quality. The basic groundwater quality parameters, such as pH, total dissolved solids, iron, sodium, chloride, sulfate, fluoride and arsenic were analysed. In addition, the presence of excess fertilizers was monitored by measuring levels of ...


    By Inderscience Publishers

  • A look at some contaminants regulated in drinking water

    The U.S. Environmental Protection Agency regulates just over 90 contaminants in public drinking water systems. They include manmade chemicals as well as naturally occurring contaminants from rocks and soil. A look at some of the contaminants that fall under federal or state regulations: ARSENIC: Enters drinking water through eroding natural deposits in the ground or mining and other ...


    By Associated Press

  • Nitrate removal using different carbon substrates in a laboratory model

    Agricultural fields have been frequently identified as major contributors of nitrate leaching into surface and ground waters. Tile drains can act as direct pathways, transferring leached nitrate to surface water. Bioreactor filters are useful for the removal of nitrate from drainage waters; however, these filters require an external carbon supply to sustain denitrification. In this study, four ...


    By IWA Publishing

  • Prediction of weekly nitrate-N fluctuations in a small agricultural watershed in Illinois

    Agricultural nonpoint source pollution has been identified as one of the leading causes of surface water quality impairment in the United States. Such an impact is important, particularly in predominantly agricultural areas, where application of agricultural fertilizers often results in excessive nitrate levels in streams and rivers. When nitrate concentration in a public water supply reaches or ...


    By IWA Publishing

  • Application of impregnated almond shell activated carbon by zinc and zinc sulfate for nitrate removal from water

    Nitrate is a wide spread contaminant in both ground and surface water due to excessive use of nitrogenous fertilizers in agricultural activities and disposal of untreated sanitary and industrial wastes (Hudak,2000 ; Almasri and Kaluarachchi,2004). Elevated nitrate concentrations in drinking water are linked to health problems such as  ethemoglobinemia in infants and stomach cancer in adults. ...


    By University of Tehran

  • U.S. EPA approves first enzymatic method for SDWA reporting of nitrate

    The US Environmental Protection Agency periodically updates methods laboratories can use for protecting the quality of the nation's drinking water.  The Safe Drinking Water Act office of the EPA published its list of Alternate Test Protocols (ATP) in the Federal Register in July 2016. ...


    By NECi Superior Enzymes

  • UV Photolysis of Nitrate: Effects of Natural Organic Matter and Dissolved Inorganic Carbon and Implications for UV Water Disinfection

    Nitrite (NO2-) formation during ultraviolet (UV) photolysis of nitrate was studied as a function of pH and natural organic matter (NOM) concentration to determine water-quality effects on quantum yields and overall formation potential during UV disinfection of drinking water with polychromatic, medium-pressure (MP) Hg lamps. Quantum yields measured at 228 nm are approximately 2 times higher than ...

  • Hydrogenotrophic denitrification of drinking water using a hollow fibre membrane bioreactor

    The objective of this research was to investigate the performance of a hollow fibre membrane bioreactor (HFMB) for hydrogenotrophic denitrification of contaminated drinking water. In the HFMB, H2 flows through the lumen of the hydrophobic hollow fibres and diffuses to an attached H2 oxidizing biofilm. Nitrate in the contaminated water serves as an electron acceptor. A hydrogenotrophic ...


    By IWA Publishing

  • Hydrogenotrophic denitrification of drinking water using a hollow fibre membrane bioreactor

    ABSTRACTThe objective of this research was to investigate the performance of a hollow fibre membrane bioreactor (HFMB) for hydrogenotrophic denitrification of contaminated drinking water. In the HFMB, H2 flows through the lumen of the hydrophobic hollow fibres and diffuses to an attached H2 oxidizing biofilm. Nitrate in the contaminated water serves as an electron acceptor. A hydrogenotrophic ...


    By IWA Publishing

  • Technological approaches to providing safe drinking water for rural and remote areas

    Provision of safe drinking water is one of the key drivers in our technological pursuits. A number of habitations are suffering from a variety of water quality problems such as excess salinity, iron, arsenic, fluoride, nitrate and microbial contamination. Simplicity of operation, less dependence on external sources of power supply, minimisation of wastewater, etc., are some of the ground rules to ...


    By Inderscience Publishers

  • Chemical analysis of drinking water of villages of Sanganer Tehsil, Jaipur District

    Abstract Due to pressure of human activity, urbanization and industrialization, the groundwater sources are degraded gradually; therefore pure, safe, healthy and odorless drinking water is a matter of deep concern. There are many pollutants in groundwater due to seepage viz. organic and inorganic pollutants, heavy metals, pesticides, fluorides etc. In Rajasthan state, all 32 districts are ...

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