Cutting fluid according to the chemical composition of the oil into the water-soluble (water-based) solution and insoluble (oil-based) solution in two categories. First, the water-based cutting fluid waste treated water-based cutting fluid waste disposal can be divided into physical treatment, chemical treatment, biological treatment, combustion process four categories. Cutting fluid waste water treatment: 1) Physical treatment: The aim is to send Fuchu suspended matter (particle size separation means) with an aqueous solution of 102m or more chips, abrasive dust powder, oil particles. There are three ways of their following: ① the use of suspended matter and water and the difference in specific gravity settling separation float separation. ② The filter material was separated by filtration. ③ centrifugal separation by centrifugal means. Cutting fluid waste water treatment: 2) chemical treatment: it is not in the physical separation of the fine suspended particles or colloidal particles (particle intuition 0.01 ~ 102m substance) for processing or waste harmful chemical ingredients handle the rendering harmless substances, the following four methods: ① using inorganic coagulant (poly aluminum chloride, sulfuric acid, alumina, etc.) or organic coagulant (PAM), etc. to promote the fine particles, colloidal condensed matter particles like coagulation method. ② the use of oxygen, oxidizing agent or the like electric ozone decomposition redox process waste harmful ingredients redox method. ③ the use of active solid waste activated carbon or the like so that the harmful components are adsorbed on a solid surface to achieve the treatment assay purposes. ④ use of ion exchange resins waste harmful ingredients ionic ion exchange process to achieve the purpose of the ion exchange process. Cutting fluid waste water treatment: 3) biological treatment: biological treatment purpose is to waste the physical, chemical treatment are very difficult to remove the organic matter (for example, organic amines, nonionic surfactant, polyols and the like) for processing, which Representative methods plus bacteria sludge method and bulk water filter bed fajitas bacteria sludge method is to add bacteria sludge (microorganisms adenoids) and ventilatory mixed waste, the waste in the microbial decomposition process of harmful substances (organic matter ). Bulk water filter bed method is a waste stream through the filter when filling the bed is covered with microorganisms (filter bed) surface when handling the waste in the microbial decomposition of organic matter. Cutting fluid wastewater 4) combustion process: direct incineration method and then concentrated by evaporation after the waste combustion process "evaporation concentration method." As the water-based cutting fluid composition varies, so far there is not a fixed method to deal with, usually based on the integrated use of the above methods effluent to be treated trait. Second, oil-based cutting fluid waste processing oil-based cutting fluid generally does not smell bad, and replace the cutting fluid mainly due to chemical changes in the cutting fluid, mixed with chip increases, a lot of leakage of lubricating oil into the machine and Water mixed with other reasons, this may take the following measures: 1) to improve oil-based cutting fluid purification device. 2) Regular cleaning of oil-based cutting fluid tank chip. 3) maintenance of the machine to prevent oil from leaking into. 4) periodically replenished cutting lubricant additive. 5) heating to remove water, and add some cutting oil lubricant additives after Deposition filter to restore quality, continue to use. Oil based cutting fluids final waste oil combustion process generally. In order to save resources, but also on the regeneration of waste oil. 

keywords: Water-based cutting fluids, oil-based cutting fluids, micro-emulsion cutting fluid,