Based on the current situation of comprehensive utilization of coal slime in China and the urgent need for water pollution control in coal mining areas, this paper uses coal slime(CS)as raw material and CaCl₂ as the activator, different proportions of coal slime-based catalytic materials were prepared under anaerobic calcination, which were characterized by XRD, SEM, BET, FT-IR, XPS, Raman spectroscopy, etc. This study investigated its ability to activate peroxymonosulfate(PMS)for the catalytic degradation of phenol in wastewater. Results show that the catalytic material prepared by CaCl₂-heat treated coal slime can effectively activate PMS to achieve the highly efficient degradation of phenol. In addition, when the mass ratio of coal slime and CaCl₂ reach 4∶3, it shows the optimal degradation performance, whose degradation rate of phenol can reach 100 %. The active species ¹O₂ played a major role in the degradation system. Moreover, the catalytic materials could be applied in a wide pH range(3.0~11.0), and the influence of various anions in water on the degradation of phenol is relatively limited, indicating their good application prospect in wastewater treatment.

This study synthesized NaA zeolite by alkali melting-hydrothermal method based on fly ash as raw material. The effects of hydrothermal temperature, hydrothermal time, alkali concentration and alkali/FA mass ratio on the preparation of zeolites were investigated by single factor experiments, and the performance of the prepared zeolites was evaluated by water adsorption capacity and Cation Exchange Capacity (CEC) value.Results show that it is beneficial to the synthesis of NaA zeolite under hydrothermal temperature of 100 ℃, hydrothermal time of 5 h, NaOH concentration of 2.73 mol/L, and alkali/FA mass ratio of 2.8, in which the highest CEC value can reach 374.63 mg/g. The adsorption of Pb(Ⅱ) in liquid phase was studied by using the synthetic NaA zeolite. The adsorption capacity was up to 471.51 mg/g with 1 g/L dosage of zeolite, at pH 6.2 and 25 ℃ of adsorption temperature and the adsorption time was 60 min.The adsorption data of Pb(Ⅱ) by NaA zeolite was fitted better with Langmuir model, and the saturated adsorption capacity of Pb(Ⅱ) could reach to 580.18 mg/g.