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Complete membrane filtration system for a commercial wastewater treatment company provided by Dynatec.

Complete membrane filtration system for a commercial wastewater treatment company provided by Dynatec Systems.  The system gives them the ability to meet demanding requirements for discharge with the tubular ultrafiltration (UF) systems followed by two stage reverse osmosis (RO).  They can safely meet the requirements for PFAS, 1-4 dioxane, heavy metals, chemical oxygen demand (COD) and total dissolved solids (TDS). 

For more information on membrane filtration systems, please contact us today.

Zero-liquid discharge (ZLD) wastewater treatment system for a food processing company.

Zero-liquid discharge (ZLD) wastewater treatment system for a food processing company was provided by Dynatec. The primary treatment is provided by a tubular membrane bioreactor (MBR) followed by reverse osmosis (RO). Membrane bioreactor (MBR) permeate is reused for cooling tower make up. Reverse osmosis (RO) permeate is used for high-quality users and reverse osmosis (RO) reject is used for irrigation.

For more information on zero-liquid discharge (ZLD) wastewater treatment systems, please contact us today.

A 2 MGD (million gallons per day) tubular Ultrafiltration (UF) Membrane Bioreactor (MBR) to process dairy wastewater was provided by Dynatec.

The system is a conversion of an existing extended air system where an existing bioreactor is being utilized.  The capacity of the existing bioreactor was doubled with an increase in the mixed liquor solids concentration and an upgrade of the fine bubble aeration to slot injector aeration.  

For more information on this opportunity, please contact us today.

Landfill leachate treatment system for a hazardous waste landfill incorporates heavy metals pretreatment followed by a tubular Membrane Bioreactor (MBR) system. 

Landfill leachate treatment system for a hazardous waste landfill incorporates heavy metals pretreatment followed by a tubular membrane bioreactor (MBR) system.  The membrane bioreactor (MBR) reduces ammonia, phenol, Polychlorinated Biphenyl (PCB), chemical oxygen demand (COD), volatiles and semi-volatiles and other contaminants adequately for discharge.  The system reduces PFAS 30-60% and carbon is utilized to reduce PFAS to low ppt concentrations.

For more information on landfill leachate treatment systems, please contact us today.

Dynatec Systems has upgraded an existing Dynatec membrane bioreactor (MBR) to include post treatment for transmissivity (UVT) improvement.

Dynatec Systems provided a low pressure nanofiltration (NF) system to remove humic and fulvic acid to improve the transmissivity (UVT) of the treated water discharge.  The nanofiltration (NF) system also minimizes the reject volume making the membrane approach practical.

Demands for development of membranes with specific performance continue to increase as water quality requirements tighten and water treatment system designs become more complex.  Such demands lead to development of new and improved nanofiltration (NF) membranes with selective rejection characteristics for removal of the contaminants affecting the ability of the water to transmit light (transmissivity).

Where UV is employed for disinfection the  requirement for transmissivity improvement has become important at many facilities.

The nanofilter (NF) membrane typically rejects only larger polyvalent cations and anions and as a result produces a very small volume of reject.

Nanofiltration (NF) systems are typically used for:

  • Color removal from surface water sources including removal of disinfection precursors
  • Retention of humic and fulvic acids in landfill leachate to improve UV transmissivity
  • Pharmaceutical solvent recovery and management
  • Removal of tar compounds in petroleum industry
  • Separation of blood compounds in medicine
  • Water softening

For more information on nanofiltration, please contact us today.

Wastewater treatment for an aerostructures manufacturer designed by Dynatec Systems.

Wastewater treatment system for an aerostructures manufacturer provided by Dynatec Systems.  The plant removes heavy metals and produces water for reuse.  Dynatec Systems also provided a double pass reverse osmosis (RO) system to produce low conductivity/low Total Dissolved Solids (TDS) water (less than 3mg/l) for the metal finishing process in lieu of a deionizing system. The Reverse Osmosis (RO) system was much more cost effective in processing the relatively high Total Dissolved Solids (TDS) water supply.

For more information on wastewater treatment to remove heavy metals and produce water for reuse, please contact us today.

Textile biological treatment system upgraded to a tubular membrane bioreactor (MBR).

A textile company needed to upgrade the performance of their existing wastewater treatment system and wanted to reuse the majority of their wastewater.  This created the need for a robust system that will produce purified water for reuse.  Dynatec was selected to provide the ultrafiltration (UF) components of the membrane bioreactor (MBR).  The out-of-basin membranes were the ideal choice for their consistently high-quality effluent, low maintenance and minimal downtime with the presence of the pigments that have proven to be problematic for other alternatives.  The Dynatec membrane bioreactor (MBR) ultrafiltration (UF) system was pilot tested and demonstrated consistent performance providing the high-quality permeate required.

The membrane bioreactor (MBR) effluent, now free of suspended solids and most of the organic load, is then processed through a reverse osmosis (RO) system for further purification.  The Dynatec membrane bioreactor (MBR) system, using tubular out-of-basin membranes, permits operation at high MLSS and produces lower chemical oxygen demand (COD) results thereby reducing the organic fouling at the downstream reverse osmosis (RO) system. 

The system capacity has been more than doubled employing existing aeration tanks with an upgrade to the aeration.  Qualitative treatment results have also improved.  The project cost was less than the cost to expand the plant as a conventional biological plant with the addition of another bioreactor and clarifier.

For more information on wastewater reuse, please contact us today.

Existing biological system converted to membrane bioreactor (MBR) at a dairy.

Existing conventional biological treatment system at a dairy converted to a membrane bioreactor (MBR). The converted plant has the ability to process wastewater at the rate of 475,000 gallons per day.

The conversion provided the ability to increase the treatment rate and at the same time improve the quality of the treated water.  The system operated at a higher concentration of mixed liquor in the bioreactor and thereby increase the throughput capacity of existing bioreactor and improves the quality of the treated water that is discharged.

The Dynatec out-of-basin membrane configuration provided for optimization of both biological and membrane systems.

Contaminants Removed

  • Biochemical Oxygen Demand (BOD)
  • Total Suspended Solids (TSS)
  • Chemical Oxygen Demand (COD)
  • Phosphorous
  • Ammonia
  • Fat, Oil and Grease (FOG)

For more information about converting an existing biological treatment system to a membrane bioreactor, please contact us today.

Cheese Processing Plant Gets HiRate membrane bioreactor (MBR) ultrafilter (UF)

Ultrafilter (UF) for membrane bioreactor (MBR) installed to process 400,000 gallons per day for a cheese processing plant.  

This processing plant had an existing conventional biological system that was unable to process the required volume and was unable to meet the increasing qualitative discharge requirements.  By converting the plant to a Dynatec membrane bioreactor (MBR), the facility was able to increase the system output while meeting the stricter discharge regulations.

Contaminants removed:

  • Biochemical oxygen demand (BOD)
  • Phosphorous
  • Suspended solids
  • Chemical oxygen demand (COD)
  • Ammonia
  • Fats, oil and grease (FOG)

For more information about converting an existing conventional biological system to a membrane bioreactor (MBR), please contact us today.

Ultrafiltration (UF) System Removes Oil and Metals

Automotive parts manufacturer needed an ultrafiltration (UF) system to remove oil and metals to allow the treated water to be acceptable for discharge.   An ultrafiltration (UF) system was selected based upon its ability to consistently meet the discharge requirements without chemicals and with limited operator involvement.  This ultrafiltration (UF) system removes oil and reduces zinc in compliance with discharge requirements.  

Ultrafiltration excels at the clarification of solutions containing suspended solids, bacteria and high concentrations of macromolecules, including oil thus making this an excellent solution to this problem.

Ultrafiltration is a form of filtration that uses a membrane to separate suspended and colloidal materials in an aqueous phase.  Ultrafiltration will normally separate everything that is not soluble and some larger macro molecules that are soluble.  Ultrafiltration uses a PVDF tubular membrane that is permeable to perform the separation.  One of the uses that demonstrates the usefulness of ultrafiltration is separation of oil in an emulsion from water.  In this case, machining coolant oil emulsions can have the oil separated and concentrated, with the water passing through the membrane, and the concentrated oil phase disposed.

For more information on ultrafiltration systems to remove oil and metals, please contact us today.

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