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Vibratory finishing and associated industrial processes including ball burnishing and tumbling, produce fine particles. These particles are typically of the media used and of the materials being treated. The particles are often metal, but include other materials also. If the materials being treated are oil-coated, oil will also be present in the waste stream.

The waste from these processes must be disposed of safely and according to environmental regulations. Typically, the waste has low levels of solids, some oil, and a significant proportion of chemicals used in the process. The chemistry may be acid, caustic or neutral and serves one of several purposes in the finishing process.

Recovery of the chemical solution and concentration of the solids is a well- established process using ultrafiltration (UF). Dynatec has supplied many systems for this purpose.

Ultrafiltration (UF) using tubular membrane modules allows for the chemical solution to pass through the membrane, while the remaining constituents of the waste stream including the fine solids and oils are retained and concentrated. In this way, recovery of the chemical solution is possible, while considerable reductions in waste disposal costs are also achieved.

High rates of recovery of the chemical solution are possible, often exceeding 99%.

Significant Savings

  • Lower cost operation
  • Lower operator requirements
  • Simple to operate and maintain
  • Lower sludge volumes

Technology Benefits

  • Simple mechanical process
  • Consistent high-quality water
  • Ability to reuse purified water
  • Easily expandable
  • Low operating costs
  • Unattended operation
  • Minimal disposal costs
  • Remote monitoring from cell phone or iPad

Contaminants Removed

  • Biochemical Oxygen Demand (BOD)
  • Chemical Oxygen Demand (COD)
  • Heavy metals
  • Ammonia
  • Color
  • Graphite

Services Provided

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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