In this paper, a gas-liquid two-phase discharge plasma water treatment device was designed for the degradation of alizarine reds in simulated dye wastewater. The effects of the solution circulation flow rate, carrier gas velocity, discharge power, initial concentration, solution pH, Fe²⁺ addition, H₂O₂ addition, and tert-butanol addition on the removal efficiency of alizarin red were investigated in the experiment. According to the treatment results of 50 mg/L and pH 7.21 alizarine reds in simulated dye wastewater, the removal efficiency reached 94.6%: the discharge power of 43.5 W, the circulation flow rate of 52 L/h, and the carrier gas velocity of 20 mm/s. Meanwhile, the mechanistic and reaction kinetics of the alizarine reds degradation process were investigated, and the economic feasibility of plasma discharge alizarine reds degradation.

本文针对模拟染料废水中茜素红的降解设计了气液两相放电等离子体水处理装置。溶液循环流量、载气流速、放电功率、初始浓度、溶液pH值、Fe ²⁺添加量、H ₂ O _2的影响实验考察了添加、添加叔丁醇对茜素红去除率的影响。根据模拟染料废水中 50 mg/L、pH 7.21 的茜素红处理结果，去除效率达到 94.6%：放电功率 43.5 W，循环流量 52 L/h，载气流速为20 毫米/秒。同时，研究了茜素红降解过程的机理和反应动力学，以及等离子体放电降解茜素红的经济可行性。