In the machining industry, cutting fluid will be used in the production process to cool, lubricate the tool and the workpiece, the cutting fluid will be recycled, and the deterioration will occur during the use of this process, which will produce waste cutting fluid.
Cutting fluid demulsification has always been a problem in the water treatment industry, cutting fluid wastewater from a wide range of sources, essentially is the oil-in-water emulsion, its composition is complex, good chemical stability, high oil content, high COD, difficult to break milk, small amount of water, poor biochemical characteristics, direct treatment difficulty is relatively high, generally need to be pre-treated and then subsequent treatment, This wastewater can not be treated with ordinary flocculants, so special cutting fluid demulsifier is needed to solve the problem.
Pretreatment is mainly the use of demulsifier to demulsify the cutting fluid, so that the oil or colloidal particles in the sewage lose their stable repulsive force and attraction, lose their stability and form floc, not only can completely break the emulsion, but also can flocculate the suspended matter to make the water clear, in order to remove the oil in the water in the wastewater. For high-difficulty cutting fluid, oily and fatty wastewater, the water in the inner phase of the emulsion particles breaks through the interface film into the outer phase, destroys the oil emulsification state that has been formed, and separates the oil and water.
Cutting fluid demulsifier set demulsification and flocculation one, good oil removal performance, can break emulsion flocculation stratification, breaking speed, clear water treatment, so that the purpose of sewage purification, the treated cutting fluid can be recycled.
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