Dennis Wiedenhaus

Technology for industrial water and waste water treatment

Frankfurt Rhine-Main Metropolitan Area

About

Experience

  • EnviroChemie GmbH (15 yrs)
    • Head of Sales & Design
      Jan 2024 - Present · 2 yrs 9 mos

    • Project Manager Sales & Design
      Oct 2011 - Dec 2023 · 12 yrs 3 mos

      EnviroChemie – industrial water and wastewater treatment: - Energy from wastewater and customised biological wastewater treatment plants - Physico-chemical flocculation, filtration and detoxification processes - High-performance membrane separation plants

  • Process Engineer at Veolia Water Solutions & Technologies – Oil & Gas (VWS Oil & Gas)
    Oct 2007 - Sep 2011 · 4 yrs

    Process Engineering at Veolia Water Solutions & Technologies – Oil & Gas (VWS Oil & Gas), Ede (The Netherlands): - generating process designs for process water and wastewater facilities for the industrial market (with special focus on the oil & gas industry) including P & IDs, calculations, control philosophies, mass and energy balances, flow diagrams, equipment selection etc. according to high oil & gas industry standards at tender and delivery stages. - technical support to project managers and engineers during project execution Processes: o process water pre-treatment such as mechanical, media & membrane (MF, UF) filtration and flocculation & coagulation processes, o demineralisation and softening such as membrane filtration (NF, RO) and ion exchange technologies, o specific treatment technologies such as oxidation, adsorption and hydrocarbon extraction processes, o primary, secondary and tertiary wastewater treatment technologies and sludge treatment processes.

  • Process Engineer at Veolia Water Solutions & Technologies (UK) Ltd.
    Apr 2006 - Sep 2007 · 1 yr 6 mos

    Process Engineering at Veolia Water Solutions & Technologies (UK) Ltd., Birmingham (UK): - generating process designs for process water, drinking water and wastewater facilities for the industrial and municipal market, and providing technical support to project managers and engineers during project execution.

  • Internal Marketing at Veolia Water Solutions & Technologies
    Oct 2005 - Mar 2006 · 6 mos

    Internal Marketing at Veolia Water Solutions & Technologies, Saint Maurice (France): - generating process/product specific brochures, case studies and marketing files for water and wastewater facilities.

  • Diploma Thesis at Vitens B.V. (The Netherlands)
    Oct 2003 - Jul 2004 · 10 mos

    Vitens B.V. (The Netherlands): Diploma thesis and placement on a Leonardo Da Vinci scholarship: - planning, conducting and evaluating two researches into Biological wastewater treatment with MBR technology: o optimisation of side-stream MBR for municipal wastewater treatment (pilot study), o feasibility study: treatment of industrial wastewater (slaughterhouse effluent) with submerged MBR.