Selection of proper filling material to enhance efficiency and reduce risks in wood chips denitrifying reactor

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F25006096%3A_____%2F17%3AN0000015" target="_blank" >RIV/25006096:_____/17:N0000015 - isvavai.cz</a>

Result on the web

<a href="http://www.wetpol.org/" target="_blank" >http://www.wetpol.org/</a>

DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Selection of proper filling material to enhance efficiency and reduce risks in wood chips denitrifying reactor

Original language description

Oral Presentation at conference WETPOL The concept of denitrifying bioreactors based on the carbon filled barrier is taking benefit from a carbonaceous matrix which provides a carbon source for Chemoorganotrophic bacteria that reduces nitrates from the drainage waters. Several studies applied a variety of organic materials (OM) to assess the efficiency of this method. However, the majority of the studies were at the laboratory scale. To run the abovementioned approach in a full-scale one demands a source of carbon that guarantees its operation for extended periods of time, e.g. 5-15 years without additional maintenance (Schipper et al., 2010). Wood chips are commonly used for bioreactors at such scales (Jaynes et al., 2008; Robertson & Merkley, 2009) however, some other OM such as straw, biological waste or ear of corn were tested. In this current study, we first tested a variety of OM in the laboratory scale to assess their efficiency in nitrate removal namely wood chips (Prunus domestica, Betula pendula, mix of softwood); wood shavings and mix of organic with inorganic materials (wood chips with gravel). Furthermore, the pilot scale bioreactor was set up to determine applicability of such technology on bigger scales. Along with evaluating the nitrogen removal we also focused on prevention of negative aspects of this technology, especially its adverse effect on aquatic ecosystems which is caused by leachate of potentially toxic compounds.

Czech name

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Czech description

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Type

O - Miscellaneous

CEP classification

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OECD FORD branch

20801 - Environmental biotechnology

Project

<a href="/en/project/QJ1520280" target="_blank" >QJ1520280: Sustainable technology of nitrogen removal from farmland drainage</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2017

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů