System and process for recycling machining waste from CNC equipment

A process of recycling machining waste comprising both metal particles and a waste machining coolant into a recycled machining coolant, the process comprising:

• collecting the machining waste;
• separating the machining waste into a solid/scrap material component and a machining waste liquid component;
• recycling the solid/scrap material component;
• decanting the machining waste liquid component, in a decanting tank for a period of time of at least 12 hours, to separate a recyclable machining coolant from (1) tramp oils and other lighter density fluids/oils and (2) solids contained within the machining waste liquid component by allowing the machining waste liquid component to become still for duration of time of at least 12 hours so that solids, contained within the machining waste liquid component, settle on a bottom of the decanting tank while the tramp oils and other lighter density fluids/oils float to a top portion of the machining waste liquid component contained within the decanting tank;
• removing the recyclable machining coolant from the decanting tank;
• filtering the recyclable machining coolant through at least a first filter to separate recyclable machining coolant from any remaining solids contained within the recyclable machining coolant;
• killing bacteria and microorganisms contained within the recyclable machining coolant;
• and
• adding water, obtained by a reverse osmosis water purification process such that the reverse osmosis water contains less than 10 parts per million (ppm) of calcium (Ca), magnesium (Mg), sodium (Na) and chloride (Cl), to dilute the recyclable machining coolant and thereby form the recycled machining coolant.

A batch process of recycling machining waste comprising both metal particles and a waste machining coolant into a recycled machining coolant, the process comprising:

• collecting the machining waste from a machining facility;
• mechanically separating the machining waste into a solid/scrap material component and a machining waste liquid component;
• recycling the solid/scrap material component;
• decanting the machining waste liquid component in a single decanting tank for a period of time of at least 24hours so as to separate a recyclable machining coolant from (1) tramp oils and other lighter density fluids/oils and (2) solids from the recyclable machining coolant;
• removing the recyclable machining coolant from the single decanting tank;
• filtering the recyclable machining coolant through at least a first filter to separate recyclable machining coolant from any remaining solids contained within the recyclable machining coolant;
• killing bacteria and microorganisms contained within the recyclable machining coolant;
• adding water, obtained by a reverse osmosis water purification process such that the reverse osmosis water contains less than 5 parts per million (ppm) of calcium (Ca), magnesium (Mg), sodium (Na) and chloride (Cl), to dilute the recyclable machining coolant and thereby form the recycled machining coolant;
• collecting the tramp oils and other lighter density fluids/oils and recycling the tramp oils and other lighter density fluids/oils;
• and
• reselling the recycled machining coolant.