Because the most common industrial degreasing technology is: organic solvent degreasing, chemical degreasing, electrochemical degreasing, ultrasonic degreasing. In addition to organic solvent degreasing technology, other degreasing technologies contain degreasers composed of external active agents, alkaline substances, corrosion inhibitors, etc., so the primary pollutants in wastewater are pH, SS, COD, BOD, petroleum, and chromaticity. And other substances.

  Generally, the following treatment technologies can be used to treat degreasing wastewater: wastewater → grease trap → conditioning tank → air flotation equipment → hydrolysis acidification or anaerobic → aerobic biochemistry → deposition → filtration or adsorption → discharge of such wastewater is generally rich in emulsified oil, Chongqing Sewage treatment Before the air flotation, CaCl2 demulsifier should be added to the waste water to break off the emulsified oil in the water, which is beneficial to remove the pollutants in the water by using air flotation equipment. When the concentration of COD in the wastewater is high, the anaerobic biochemical treatment wastewater can be used first. If it is not high, only aerobic biochemical treatment sewage can be used. This article was collected by Chongqing Wastewater Treatment.