Optimisation of biofilter for odour removal

Orvion has carried out an optimisation of a biofilter for ADM Europoort. ADM’s biofilter is used to remove odour from the waste gases that are produced during the production of soya and rapeseed oil. The biofilter is filled with bark from pine trees that acts as a carrier for bacteria …

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Demonstrating the presence or absence of species with eDNA

With ORVIdetect we are able to measure invasive exotics in water and silt samples taken from surface waters. Species such as the American Red Crayfish (Procambarus clarkii), the Muskrat (Ondatra zibethicus), the American Bull Frog (Rana catesbeiana) and the Topmouth gudgeon (Pseudorasbora parva) are detectable with eDNA. With eDNA methods …

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Measuring invasive exotics with eDNA

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With ORVIdetect we are able to measure invasive exotics in water and silt samples taken from surface waters. Species such as the American Red Crayfish (Procambarus clarkii), the Muskrat (Ondatra zibethicus), the American Bull Frog (Rana catesbeiana) or the Topmouth gudgeon (Pseudorasbora parva) can be detected with eDNA. Commissioned by …

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Muskrats

In the Netherlands muskrats are caught in order to prevent damage to dykes and embankments. It may sound strange, but it is true: muskrats can be detected using DNA techniques. The muskrat leaves a trace of DNA in the water. The trace comes from faeces, hair, skin cells and the …

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Biological remediation WAVIN started

The ground on the WAVIN Services site in Hardenberg has been contaminated with solvents for a long time. These substances were formerly used as degreasing agents. WAVIN has been controlling this groundwater contamination since the 1990’s. Ground water was be pumped up and treated above ground. But this approach was …

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Monitored Natural Attenuation (MNA)

Scientific research does not stand still. New types of bacteria are being discovered every year, such as those involved in the degradation of benzalkonium chlorides (BAC, a cleaning and disinfecting agent) and in 2017 a species that anaerobically degrades benzene. Many contaminants can be degraded by bacteria, also in soil …

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Tendering and implementation of treatment

Looking for the cheapest remediation solution? Let nature do the work! Orvion develops remediation techniques using natural degradation processes. Only where nature is itself unable to degrade the contaminants, do we add carbon source, nutrients and/or bacterial cultures. Our motto is: remediate with the hand on the purse strings. Because …

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