ERTEL’s new innovative demulsifier

for the disposal of used, water-miscible cooling lubricant emulsions and problematic industrial wastewater and application in the metal, non-metal, automotive and steel industries.

What to do with used water-miscible cooling lubricant emulsions, which are produced during the mechanical processing of metallic and non-metallic materials?

The problem. 

Used, water-miscible cooling lubricant emulsions contain emulsified oils. The main part consists of water and the rest of mostly organic chemicals, which give the cooling lubricant emulsion the required effect and stability – but consequently also the undesirable high COD (chemical oxygen demand). In order to keep disposal costs low, the oil must be economic removed, the water treated and returned to the natural water cycle.

Our solution.

The economical and environmentally friendly solution is in most cases our innovative demulsifier and its 1-step process. The consumed coolant emulsion, combined with our heavy metal precipitant  is split at room temperature. The heavy metal flakes combine with the split oil of the emulsion. After flotation, the oil-free clear water and the oil flotate containing heavy metals are separated.

Only the oil flotate containing heavy metals is then disposed of in a controlled manner.

The use of clear water.

The clear water almost always has the quality of a permeate from an ultrafiltration. This clear water with its high COD can be fed directly to osmosis or evaporation for reuse. It becomes more economical if the clear water is first pre-treated in a classic industrial biology and then sent to a municipal sewage treatment plant. A strictly controlled, but then very low-dose and direct disposal of the clear water in a municipal sewage treatment plant is also possible if the competent authority has checked and approved this.

The advantages of product and process are:

  • wide range of applications of a wide variety of o/w emulsions and industrial wastewater,
  • the time required for the 1-stage treatment is more than half lower compared to the current state of the art.
  • the disposal costs are much lower in comparison, because only the oil flotate and no additional thin sludge is disposed of.
  • the combination of heavy metal precipitation and demulsification in most oft he cases leads to less salinization of the clear water.
  • there is no need for complex plant technology and the process can be carried out very easily in a stirred tank or preferably in a commercially available flotation plant.

If you are interested in this innovation, we look forward to hearing from you.