Machining industry

Machine processing wastewater mainly comes from mechanical processing processes such as metal cutting, grinding, drilling, and milling. These wastewater typically contain multiple components, including the following categories:


1. Oil and coolant: cutting used in machining processes


Liquids, coolants, lubricating oils, and other substances typically exist in an emulsified state in wastewater and are difficult to separate.


2. Metal particles: Metal shavings, powders, etc. generated during the machining process


3. Surfactants: In order to improve the effectiveness of cutting fluid and coolant, surfactants are usually added to them. These surfactants may cause certain pollution to water bodies.


4. Wire drawing fluid is a metal processing fluid that has functions such as lubrication, cleaning, cooling, and rust prevention.


Ingredients: Various additives including lubricants, emulsifiers, rust inhibitors, cleaning agents, defoamers, fungicides, etc


5. The main pollutants in die-casting wastewater are suspended solids, heavy metals, organic matter, and oils, which also have high acidity, high COD, and BOD characteristics.


機加工行業廢水處理

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