drinking water nitrate Articles
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Poly (Ε-caprolactone) as substrate for water denitrification
In this paper, poly (Ε-caprolactone) (PCL) was used as carbon source and biofilm supporter in a fixed bed bioreactor to biologically remove nitrate from drinking water. The experimental results showed that denitrifying microorganisms could easily adapt to PCL as carbon source and attach to the surface of PCL granules. The fine biofilm could form on the surface of PCL granules within 15 days. ...
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The risk of cancer as a result of elevated levels of nitrate in drinking water and vegetables in Central India
The objective of the present study was to determine the effect of nitrates on the incidence of gastrointestinal (GI) cancer development. Nitrate converted to nitrite under reducing conditions of gut results in the formation of N-nitrosamines which are linked to an increased gastric cancer risk. A population of 234 individuals with 78 cases of GI cancer and 156 controls residing at urban and ...
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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 ...
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Study Quantifies Drinking Water Nitrate’s Role in U.S. Cancer Cases
Negative health outcomes from nitrate in drinking water hit farming communities particularly hard A new Environmental Working Group (EWG) study, published inEnvironmental Research, has estimated that nitrate contamination of drinking water will cause thousands of cancer cases annually in the United States. The cancers are also expected to run up $1.5 billion in medical bills each year, with ...
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How can you remove nitrates from your well water?
Well contamination is increasing across the US Across the United States, more drinking water wells in agricultural areas are being contaminated with nutrients leaving farms and other agricultural operations. One of these common nutrients is nitrate or NO3. Nitrate is a primary drinking water standard. The maximum nitrate (MCL) allowed in drinking water is 10 mg/L of nitrate as nitrogen or NO3-N. ...
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Nitrate Monitoring Simplifies Drinking Water Management
Nitrate in source water can be challenging to manage and lead to potential non-compliance issues. Continuous monitoring of nitrate enables you to keep a real-time pulse on nitrate concentrations from source water to finished water, offering many benefits: Compliance with drinking water standards for nitrate Optimized blending ratios to maximize water use Efficient nitrate treatment with ion ...
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Groundwater Nitrate Monitoring Applications
Nitrate in source water can be challenging to manage and lead to potential non-compliance issues. Continuous monitoring of nitrate enables you to keep a real-time pulse on nitrate concentrations from source water to finished water, offering many benefits: Compliance with drinking water standards for nitrate Optimized blending ratios to maximize water use Efficient nitrate treatment with ion ...
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Case Study: WTP Optimizes Well Blending with Online Nitrate Analyzer
The Village of Port Williams is a thriving agricultural community in Nova Scotia, Canada. Like many agricultural communities, long-term fertilizer application to the land has led to elevated levels of nitrate in groundwater. Nevertheless, the local water supply plant continuously produces high quality drinking water. With a reliable nitrate monitoring system from Real Tech and a solid management ...
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Community-based wastewater treatment systems and water quality of an Indonesian village
This paper examines the impact of community-based water treatment systems on water quality in a peri-urban village in Yogyakarta, Indonesia. Water samples were taken from the wastewater treatment plants (WWTPs), irrigation canals, paddy fields and wells during the dry and wet seasons. The samples were tested for biological and chemical oxygen demand, nutrients (ammonia, nitrate, total nitrogen ...
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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 Rochette explains. ...
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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 ...
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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 of 0,5% of the ...
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Fluence Solutions for Aquifer Recharge
Fresh water can be stored underground in aquifers, but many water sources must be treated before that can happen Growing populations worldwide have become increasingly dependent on groundwater, and human activities are now depleting aquifers - the underground formations where groundwater is stored - faster than natural systems can recharge them. This depletion can damage the environment. As ...
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Illness from tap water
Bacteria and virus In every water pipe there are billions of bacteria and virus in layers of sediment and sludge. When released in small numbers, they are instantly killed by the chlorine in the water, but when pieces of sludge are ripped off by pressure changes in the pipes, there is not enough chlorine and you may get “intestinal flue” or some more serious ...
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Using Chemcatcher to help solve a pesticide puzzle - Case Study
The acid herbicide MCPA (4‐chloro‐2‐methylphenoxy acetic acid) is a relatively common pesticide used in agriculture and horticulture to control broadleaved weeds and rush. It has been detected in surface water, groundwater and drinking water worldwide. In fact, it is one of the most frequently encountered herbicides in water quality monitoring the US, Canada, Australia and much ...
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Nitrate Analysis of Water Samples Using a Benchtop UV-Vis Spectrophotometer
Nitrogen is naturally found in groundwater and surface water in the form of nitrate, nitrite, or ammonium. The EPA has established a maximum contaminant level of nitrate-nitrogen in potable water of 10ppm. This application presents results of UV-Vis analysis of nitrate concentrations in drinking water, ground water, and industrial wastewater, showing that the manual colorimetric method is ...
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Nitrate Pollution Affects Millions in U.S.
According to new study, the water contamination disproportionately affects poor and Hispanic Americans Runoff of agricultural fertilizer is a major source of nitrate pollution in drinking water. A new study in the journal Environmental Justice has determined that 5.6 million Americans served by community water systems (CWSs) in the United States are exposed to excessive nitrate levels in ...
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Utilisation of drinking water from rainwater–harvesting cisterns in the Palestinian territories: assessment of contamination risk
A set of established precautions and procedures must be followed to ensure water quality in rainwater harvesting cisterns. In this study, 106 cisterns were sampled and 176 cistern owners were surveyed in the northern West Bank region. It was found that although the nitrate concentration and Total Dissolved Solids (TDSs) readings of the sampled cisterns conformed to Palestinian standards, most ...
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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 ...
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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 UK safe limit for nitrates in Drinking water is 50mg/l as described in the current advice on ...
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