The main pollution sources of lead-zinc ore dressing plants include dressing wastewater and tailings sediment. Dust in the crushing and screening workshop and noise generated by large equipment such as crushing and grinding. The wastewater from lead and zinc mines is the main source of pollution, which includes wastewater from mining farms and wastewater from beneficiation plants. Concentrator wastewater includes: tailings water, concentrate overflow water, accident water, dressing plant flushing water, tailings pond seepage water, etc. There are different classification methods for wastewater treatment, but in principle, it can be divided into three categories: physical treatment, chemical treatment and biological treatment.