久久精品中文字幕一区-亚洲调教欧美在线-国色天香社区在线视频观看-无码人妻丰满熟妇区10p-国产男人天堂-农村黄色片-亚洲草逼视频-国产冒白浆-九色porny丨自拍视频-欧美性少妇xxxx极品高清hd-精品国产99久久久久久-久久久久久美女-九色婷婷-51久久国产露脸精品国产-久久综合综合久久高清免费

Pre treatment: The collected cutting fluid wastewater is filtered to remove larger impurities, metal cutting materials, suspended solids, etc. The filtered wastewater is then sent to the regulating tank. Add an appropriate amount of defoamer based on experience to reduce the COD content in the purchased cold water.
Evaporator: After pre-treatment, the original emulsion enters the back-end multi effect evaporator or MVR generator. The evaporator concentrates the emulsion, and the evaporated condensate is preheated and cooled before entering the back-end treatment process.
Backend biochemical treatment process: Due to the high COD content in the original emulsion and the small amount of 00D in the condensate, it needs to enter the downstream sewage biochemical treatment system. The cold source water after biochemical treatment can be directly discharged into the municipal pipeline network and returned to the upstream production process for continued use, achieving zero discharge requirements.