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Pollution > Nitrate Problems Are Soluble at a Price

Nitrate Problems Are Soluble at a Price

  10/08/2009
Nitrate pollution in rivers, lakes, reservoirs and underground aquifers is a major problem.Researchers from Belgium, Malta, Poland, and the UK have developed a new low-cost, environmentally friendly technology, known as Nitrabar which substantially removes nitrate from groundwater. The project is an EC LIFE Environment Project that demonstrates the remediation of agricultural diffuse nitrate-polluted waters through the implementation of a permeable reactive barrier.
 

 

Algal blooms have become an unfortunate feature of many water systems. In extreme cases, oxygen depletion results in the death of invertebrates and fish.

 

The Nitrabar system, designed by Prof. Kalin from the University of Strathclyde, consists of a trench containing a mixture of natural materials which form a permeable reactive barrier that removes nitrate from shallow groundwater immediately before it enters rivers or lakes.

 

A key feature of the Nitrabar system is its ability to convert dissolved nitrates in the groundwater to harmless Nitrogen gas through the action of bacteria.

 

A team of experts, led by Professor Kalin, has been collecting monitoring data at a trial site in Ballymena, North Ireland since early 2008 and results indicate that nitrate is being effectively removed within the barrier, with concentrations at the inlet being reduced by over 90%.

 

Now that the science has been proven and the environmental and financial benefits have been calculated, the only outstanding issue is funding.

 

 







Read more about:  environment 
Supplier: University of Oxford Begbroke Science Park

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Comments (2):

PRB technology has been used for arsenic removal from contaminated river due to accident release of arsenic-containg wastewater in an engineering project in China, which was successful in reducing arsenc concentration less than 0.05ppm. A Ding - 13/08/2009 - 13:26


PRBs have been used for nitrate (and perchlorate) reduction and have been well studied in the USA by the Interstate Technology Regulatory Council (ITRC), the US Department of Agriculture (USDA), and Dept. of Defense. There was a paper on using PRBs for drinking water treatment presented at the 2009 AWWA WQTC. Sleepless in Seattle - 12/08/2009 - 18:54


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