The discharge of waste gas and waste liquid is the most important pollution to the environment, which mainly comes from the operation needs of purification, electroplating and mold reversal workshops. In terms of exhaust, the ventilation pipe passes through the water tower and then is discharged to a high place through water spraying; Waste water and waste liquid are collected for centralized treatment, generally neutralized with sodium hydroxide and acid and alkali before being discharged.

Exhaust is particularly important. Poor handling has a great impact on the lives of surrounding residents. The air is obviously polluted, which is most likely reported by residents. The investigation by the Environmental Protection Bureau was true, with fines ranging from tens of thousands of yuan, and this department was seized.

As for the high temperature of molten gold and the dust from turning, it is not harmful to the environment, but a little harmful to the human body.