Chemical plant wastewater treatment was failing to meet discharge limits, installed a Dynatec UF system to separate emulsified fats, oils, and grease (FOG) from their permeate.  The raw wastewater has more than 2,000ppm of emulsified FOG with peaks much higher at times. The system consists of four UF units and related components. The system currently treats 66gpm, but all 4 units are expandable. The permeate is free of FOG and is acceptable for discharge.

Chemical wastewater treatment utilizing membrane systems that range from selective separation of product to wastewater treatment and reuse.  Dynatec Systems has provided many different chemical wastewater solutions.

Chemical Wastewater Treatment Solutions

  • Ultrafiltration (UF), Nanofiltration (NF) and Reverse Osmosis (RO) for selective separation of product for recovery
  • MBR biological treatmentUltrafiltration system
  • Wastewater reuse with MBR
  • Conversions of existing systems to MBR
    • Expand existing bioreactor treatment capacity
    • Improve discharge quality
    • Produce water for reuse
    • Reduce surcharge
  • High purity reuse with MBR and RO

Contaminants Removed

  • Organics
  • Inorganic solids
  • Phenol
  • Solvents
  • Oils
  • Acids

Ultrafiltration offers the following advantages over conventional separation:

  • No chemical required
  • Very little labor required
  • Simple mechanical process
  • Less sludge
  • Ability to concentrate the retentate for beneficial use
  • Less space required
  • Overall lower operating costs

Dynatec specializes in extensive RO and NF membrane systems to remove soluble components of wastewater that may not have been removed by primary treatment. In most cases, the purified water can be reused.

RO is capable of rejecting soluble constituents of aqueous streams, such as:

  • BacteriaReverse osmosis
  • Salts
  • Sugars
  • Proteins
  • A wide range of organics and colors
  • Improves the color, taste and properties of the fluid

RO can be used to purify fluids such as ethanol, which will pass through the reverse osmosis membrane, while rejecting other ions and contaminants from passing.

RO/NF systems

The most common use for reverse osmosis is in purifying water. It is used to produce water that meets the most demanding specifications. This differs significantly from other RO systems that are often only designed to treat potable water. Our system is specifically designed to accommodate:

  • Minimize reject volume
  • Variable characteristics
  • Minimize fouling

RO and NF Technology

RO uses a membrane that is semi-permeable, allowing the fluid that is being purified to pass through it, while rejecting the contaminants that remain. Most NF and RO systems are operated in crossflow to allow the membrane to continually clean itself.

Integrated clean-in-place (CIP)

The membrane skid has an integrated CIP system on the skid. This is especially important for wastewater reuse systems because the cleaning frequency of the skid is often higher than in other RO applications. With an integrated CIP system, cleaning is fast and easy, minimizing the operator’s time.

Tubular Configuration:

  • Higher permeate rate
  • Lower rates of fouling
  • Higher concentration of retentate
  • Easier to clean
  • Longer membrane life
  • Low operating cost

To discuss your wastewater treatment solution, please contact us today.


Your Partner for Industrial Wastewater

Dynatec is an industry leader in providing membrane bioreactors and wastewater membrane
systems since 1978 in industrial and municipal applications.

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