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Biological treatment of micropollutants with eXeno™

Biological treatment of micropollutants with eXeno™
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Biological treatment of micropollutants with eXeno™ - 1

Biological treatment of micropollutants with eXeno™ WATER TECHNOLOGIES

Biological treatment of micropollutants with eXeno™ - 2

Biological treatment of micropollutants Micropollutants such as pharmaceuticals, personal care products or industrial chemical compounds are a large class of pollutants sometimes referred to as emerging contaminants which are typically difficult to degrade compounds. The growing risk that these compounds find their way into our water supply system and additionally, the increasing spread of antibiotic resistance genes into the environment, places growing importance on the removal of antibiotics and other difficult compounds from both industry and municipalities. The major sources of...

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Biological treatment of micropollutants with eXeno™ - 3

An AnoxKaldnes micropollutant solution eXeno™ is a technology-based on AnoxKaldnes™ MBBR (Moving Bed Biofilm Reactor) for the biological removal of drug and other complex compound residuals in wastewater. The technology is effective, economical and environmentally friendly. The MBBR technology relies on microorganisms, as bacteria, growing on plastic carriers which are retained in the reactor. MBBR technology allows the development of biomass with significantly longer sludge retention times (SRT) compared to conventional systems. This encourages the development of slower growing organisms...

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Biological treatment of micropollutants with eXeno™ - 4

Proven technology with broad application eXeno™ is based on more than 30 years of experience of AnoxKaldnes in wastewater treatment of pharmaceutical production. With more than 25 references worldwide within the pharmaceutical industry, AnoxKaldnes has gained the expertise for treating these complex compounds. eXeno™ technologies ranges from complete treatment of pharmaceutical/industrial wastewater and hospital wastewater to tertiary solutions for municipal applications. eXeno™-P and eXeno™-H are typically full treatment systems including carbon and nitrogen removal in addition to...

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Biological treatment of micropollutants with eXeno™ - 5

Patented technology for post treatment of municipal wastewater For post-treatment of municipal wastewater, eXeno™-M is based on a cyclic operation of 3 MBBR reactors. Effluent wastewater from a municipal wastewater treatment plant is continuously treated in a main treatment line consisting of 2 MBBR reactors in series. Intermittently, one of the 2 reactors is taken offline and moved into a regeneration phase where it is exposed to higher loads (e.g. influent wastewater). The reactor that was in regeneration phase is put back in service as reactor 1 in the main line. Intermittent exposure to...

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Biological treatment of micropollutants with eXeno™ - 6

Eliminating a broad range of compounds More than 30 pharmaceuticals and other difficult substances were intensely studied in three different eXeno™-M pilot studies. Degradation tests indicated removal of the substances ranging between 20 - 100% with reaction rates much higher when compared to other biological systems. Pharmaceuticals known to be highly recalcitrant like iohexol, a common contrast agent for X-ray and and generally not biodegradable by activated sludge, was removed up to 70%. Diclofenac, an anti-inflammatory drug raising high interest for its toxic effects to the environment,...

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Biological treatment of micropollutants with eXeno™ - 7

Combining eXeno™ and ozone for efficient polishing Biological removal of drug residue is an effective and environmentally friendly process. By optimizing the biological degradation it is possible to limit the consumption of chemicals such ozonation or the use of expensive physical processes such as activated carbon. However, some of the existing micropollutants found in wastewater can have low biodegradability and therefore the combination of different removal process can be necessary. eXenO₃™ combines biological degradation with the efficiency of oxidation. eXenO₃™ can be combined as a...

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