Wastewater Treatment For A Better Environment

Nijhuis Water Technology aims to create a better Environment by cleaning WATER streams to the effluent quality you require for discharge to sewer or river. In our delivery program we have a complete range of wastewater solution products which can be combined to your specific solution and to meet your specific requirements for wastewater treatment.

The first step in wastewater treatment is primary treatment, removal of solids which results in reduction of pollution load in your wastewater. Depending on your effluent you might require either a screen, a flotation system or a flocculation & flotation system. If you discharge your water into a sewage system a primary treatment can be sufficient to meet the effluent requirements for treatment of water.

Discharging to the environment, for example a river or irrigation requires a secondary treatment step, biological treatment. Nijhuis Water Technology can select the most economic treatment system for you based on your type of wastewater, based on the actual requirements and local circumstances.

In some areas biologically treated water requires a tertiary treatment step, polishing, due to very tight requirements. Effluent after a tertiary treatment step is very clean, so clean that the step to reuse of your water can be made.

During treatment of wastewater, sludge is produced which needs to be disposed. Depending on your local requirements we have a range of sludge treatment systems to minimise your waste stream.

Primary Treatment Systems

Depending on your requirements a selection of our primary treatment systems will be either the first step of your treatment or the complete solution.

Solutions:

  • Filter systems will remove the larger particles
  • Sedimentation systems will remove heavy particles
  • Oil & Water Separators will remove free separable oils, greases and fats
  • Coagulation & flocculation will creat separable flocs of emulsified materials
  • Flotation systems will remove fine solids and created flocs

Secondary Treatment Systems

Secondairy treatment systems make use of bacteria to remove dissolved materials from your waste water. In general you devide these systems into two groups.

Solutions:

  • Aerobic Biological Treatment Systems

    Nijhuis Water Technology offers a complete range of Bioctor aerobic biological waste water treatment systems. The following aerobic biological treatment system can be part of our solution.

    Solutions:

    - Bioctor S - SBR Sequece Batch Reactors
    - Bioctor C - Continous biological treatment
    - Bioctor M - MBRMembrane Bio Reactors
    - Bioctor B - MBBR Moving Bed Bio Reactors
    - Bioctor N - Biological Nitrogen Removal
    - Clarifiers - Activated Sludge Settling systems
    - Clariflot - Activated Sludge Flotation systems

    Depending on your waste water and effluent requirements, Nijhuis Water Technology will select, design and build the most suitable plant for each application, taking in consideration investment, operational costs, local requirements and reliability.

  • Anaerobic Biological Treatment Systems

    Nijhuis Water Technology offers a complete range of Anoctor anaerobic biological waste water treatment systems. The following anaerobic biological treatment system can be part of our solution.

    Solutions:

    - Anoctor U - UASB Upflow Anaerobic Sludge Blanket systems
    - Anoctor E - EASB Extended Anaerobic SLudge Blanket systems - also available in prefab modules

    Depending on your waste water and effluent requirements, Nijhuis Water Technology will select, design and build the most suitable plant for each application, taking in consideration investment, operational costs, local requirements and reliability.

Tertiary Treatment Systems

  • Nijhuis Water Technology offers a range of NWR technologies to polish your industrial wastewater to very tight discharge consents or even to a quality which can be reused in your production process. One or a combination of the following technologies can be part of your solution.

    Solutions:

    - Sand filters
    - Media filters
    - Active carbon filters
    - Aerated activated carbon filters
    - Disinfection
    - Membrane systems, types MF / UF / MF and RO

    Depending on where and how the wastewater will be reused a selection will be made from these technologies to ensure the optimum polishing configuration with the lowest running costs and a minimum of waste for disposal.

Sludge Dewatering Systems

During treatment of waste water and wastes, sludge is produced which needs to be disposed of in order to diminish the disposal costs.

  • Nijhuis Water Technology designs and supplies the following NST sludge thickening systems

    - Dewatering drums
    - Screw press separators
    - Chamber filter presses
    - Belt presses
    - Decanter centrifuges
    - Sludge drying

    Based on your requirments Nijhuis Water Technology will design the most suitable dewatering system for you.