With the widespread application of vibration grinding machines, centrifugal grinding machines, and magnetic polishing machines, products such as hardware, stamping parts, and die-casting parts that originally relied on manual labor (such as mass deburring, sharp edge chamfering, rounding, product surface grinding to remove tool marks, surface finishing to remove machining lines, removal of oxide film, black film, and floating rust) can be completed in batches using grinding machine polishing machines, The efficiency and quality of the process have been greatly improved, and labor costs have been greatly reduced. While grinding and polishing machines bring many benefits, they also generate more or less grinding wastewater during the polishing process. If these sewage is not properly treated, it will have adverse effects on the environment and lead to expensive sewage treatment costs and related risks.

How to properly treat the sewage and wastewater generated during the operation of the polishing machine is an increasingly urgent and necessary problem for manufacturers who use polishing machines, and it is also the trend of sustainable industrial development.

The grinding machine uses a large amount of grinding fluid and cleaning fluid, in addition to the cleaning fluid used for cold heading machines, as well as the acidic and alkaline wastewater discharged from the pickling room. These wastewater contains a large amount of emulsion, oil, iron powder, and a small amount of oxidant and grinding oil.

The production wastewater discharged during the production process mainly comes from the steel ball grinding and cleaning workshop. Grinding wastewater is a high concentration inorganic wastewater, mainly composed of suspended solids, and the wastewater is alkaline. The concentration of pollutants in the cleaning wastewater is relatively low, with a COD mass concentration of 110-150 mg/L, a large amount of water, weak alkalinity, and poor biodegradability.

Introduction to treatment process:

According to the requirements for the inlet and outlet water quality of grinding wastewater, COD, SS, and hardness are mainly removed. To meet the treatment requirements, a combination of physical and chemical precipitation and filtration treatment process is adopted. The process flow for meeting emission standards is as follows:

Wastewater - wastewater collection tank - PH regulation - flocculation - inclined plate sedimentation - clean water tank - quartz sand filtration - activated carbon filtration - clean water discharge

The process flow for achieving reuse is as follows:

Wastewater - wastewater collection tank - PH regulation - flocculation - inclined plate sedimentation - clean water tank - quartz sand filtration - activated carbon filtration - ultrafiltration - reuse water tank - return to the point of use.