Coolant recovery systems are used to skim reusable coolants and machining fluids from wastewater in metalworking facilities. They help to reduce the cost of waste disposal and equipment replacement while increasing the life of machinery and tools. Coolant filtration is the first step in a coolant recovery system. As coolant or metal working fluid is removed, pollutants and particles adhere to one another as solid matter. These particulates are then removed via bag or mesh filters. Next, the coolant is separated from the oils that are produced during industrial forming processes such as rolling, stamping and drawing. Typically, these solutions have a polyalkylene glycol base for coating machining parts and tools with a thin film.
Coolant recovery systems are used in oil reclamation and water reclamation applications. Some coolant recovery systems remove suspended oils through coalescing filters that separate the oil from the coolant. An oil skimmer then routes the oils into a reservoir. After the oil skimming process is complete, the cleaned coolant is routed to a coolant recovery tank for reuse. Coolant recovery systems are also used in water reclamation applications, where the coolant and oil are heated to high temperatures and then cooled with water. Using desalinization, boilers, and ionic filters, the water used in coolant recovery systems can be filtered through a wastewater treatment system for reuse.
Suppliers of coolant recovery systems provide a wide range of products. Systems can be either permanent or portable, but most are designed to reduce costs, improve machinery performance and minimize environmental effects. Coolant recovery systems can be customized through the additions of features such as a coolant return system, polishing filter, high or low speed centrifuge, and programmable interface. Some products are designed for manufacturers that use CNC machines, lathes, machining centers, and machining tools. Others are designed companies that manufacture heavy equipment.