The cutting tool lubricants (cutting coolants) are steady state, kinetically stable emulsions used in intensive cutting, squirting, rolling, die forging, drilling processes et al.
The spent cutting emulsion is a consumable to be replaced.
Due to high stability of spent cutting coolant emulsions, their discharge to general purpose treatment facilities of the companies deteriorates wastewater treatment since highly emulsified petroleum products are not captured by settlement ponds and are passed through effluent filters.
In fact, the cutting tool lubricants are not decomposed naturally, therefore their discharge to ponds and treatment facilities preliminary mitigation is not permissible.
Spent cutting coolant
Similar cutting coolant treatment methods
After implementation of solution
0.05 - 10 mg/l
6.5 – 8.5
pH adjustment takes place on the first stage of treatment. After that, solution of Biomicrogel® BMG-P202 flocculant and activator are added to the emulsion alternatively. After that the emulsion treated by agents is mixed in the static mixer and pipe flocculator. Thereafter the emulsion treated by agents gets to the settlement tank where the process of separation, surfacing and compaction of capsulated petroleum products takes place.
The water-oil emulsion with adjusted pH is supplied to collector where it is mixed with the agent and activator. The capsulated petroleum products surface during this reaction.
After that the mixture moves to the separator where it is separated into purified water, dewatered sludge or centrate and petroleum products to be supplied to further refinery.
They catch any mineral and vegetable oils, animal fats, and oil and petroleum products in water effectively, based on sweep- coagulation process.
After separation of oil-water mixture both treated water and removed petroleum products can be returned to the process cycle and re-used. Biomicrogel® BMG-P2 flocculants are well compatible with almost all flocculants based on inorganic salts of polyvalent metals cleaning water from suspended particles.