The oil on the top of the coolant was separated through skimming process, and spent coolant wastewater (without any excessive oil) was collected at the spent coolant storage prior to the treatment process within the plant operation.
The oil on the top of the coolant was separated throughskimming process, and spent coolant wastewater (withoutany excessive oil) was collected at the spent coolant storageprior to the treatment process within the plant operation.