Operational services involve the company being entrusted by clients to manage their environmental pollution treatment facilities. During the entrustment period, the company provides innovative environmental protection technologies, continuously improves processes, optimizes environmental operation parameters, enhances the quality of environmental governance for clients, and reduces the operating costs of environmental protection facilities. Taking the waste acid treatment operation project of Shandong Humon Smelting Co., Ltd. as an example. Based on the characteristics of the waste acid, the "two-stage gas-liquid enhanced copper-arsenic separation process using vulcanization" is adopted for treatment. This process deeply removes heavy metals such as copper and arsenic, while achieving efficient separation, classification, recovery, and disposal of copper and arsenic, enabling the recovery and utilization of copper and the removal of arsenic from the system.