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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Feasibility and remediation plan

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When selling or redeveloping a plot or location, the suspicion of a soil or groundwater pollution being present brings along obligations. Orvion makes an inventory of soil pollution that are presen and a remediation strategy so that you not only know the extent of the contamination, but can also gain …

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Detecting calamities with DNA techniques

In 2016the Waterschap Rijn en Ijssel (Rhine and Ijssel Water Authority) suffered from inhibited nitrification at one of their treatment plants. The cause: a long-term discharge that was toxic to the nitrifying biomass. As a result ammonium in the sewage water was no longer successfully removed. This prompted us to …

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Measurement of antibiotic resistance

Antibiotic resistance (ABR) is seen as one of the greatest threats to public health. Already every year in Europe more than 25,000 people die from the consequences. These people are often already seriously ill. But young healthy people are also increasingly being hospitalised as a result of infections, such as …

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Big Data collected from three wastewater treatment plants

In water treatment it is bacteria that clean the water. So data about the micro-organisms in sludge is needed in order to have more insight and more control over the treatment process. With new technology from Oxford Nanopore Technologies that we use, this has become possible and affordable. An example …

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Troubleshooting at a highly loaded MBR water treatment plant

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Client: Logisticon Water Treatment Question: A very highly loaded MBR bioreactor (average influent concentrations COD 15.000 mg/L and ammonium 4.000 mg-N/L) showed Nitrite accumulation (up to 1.000 mg/L) and didn’t function properly. The question was to find the underlying problems and advise on the optimization of the process in order …

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Quantification of Filamentous growth in Wastewater treatment plant

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Client: Water Board Schieland and Krimpenerwaard Question: A watertreatment plant periodically has problems sludge bulking, the question was to analyse with ORVIdetect quantitative PCR to gain insight into the filamentous growth in the sludge. Work done: ORVIdetect analyses for several filamentous micro-organisms were performed on the sludge. At the moment …

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Gillesstraat commissioned by the city of The Hague

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Client: City of The Hague Question: Design, tender and guidance of the implementation of the biological in-situ remediation of the J. Gillesstraat in The Hague Work done: Development and design of a alternative approach to the remediation of CVOCs. Planning, design, modelling, selection of contractor, preparation of the remediation and …

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Chemiepack commissioned by the province of Noord-Brabant

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Client: The Province of Noord-Brabant Question: Specialist in-situ soil remediation and geohydrology Work done: As a result of the destructive fire on the premices of Chemie-Pack in Moerdijk, the local soil and water have been severely polluted. Orvion has been asked by the Province of Noord-Brabant to act as in-situ …

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