Abstract: In order to explore the adsorption process of coal powder for organic pollutants on the wastewater from mineral processing,coal powder was used as an adsorbent to adsorb diethyldithiocarbamate in mineral processing wastewater. The physical and chemical properties of coal powder were investigated,and the adsorption conditions such as dosage and adsorption time on the adsorption process were explored through the preparation of simulated wastewater containing ethinyl sulfide nitrogen pollutant. In addition,the adsorption isotherms and adsorption rate control process of the adsorption of diethyldithiocarbamate by coal powder were emphatically studied. The results show that coal powder is a natural adsorbent with complex surface structure,abundant pore structure and oxygen-containing functional groups.The addition amount of coal powder and adsorption time are important factors affecting the adsorption effect. With the increase of the amount of coal powder,the removal rate of diethyldithiocarbamate in the solution first increases,then stabilizes,and the adsorption amount decreases continuously. With the increase of adsorption time,the removal rate and adsorption amount increase rapidly at the beginning,and/g respectively L and adsorption time 30 min. What is more,the Langmuir and Freundlich isotherm adsorption models are used to fit the adsorption behavior of pulverized coal to ethionine,and the Freundlich isotherm adsorption model is more consistent with the adsorption process,indicating that the adsorption behavior was multilayer adsorption based on surface. The adsorption kinetics is studied by using the quasi first order kinetic equation,the quasi second order kinetic equation and the particle internal diffusion model. The adsorption of diethyldithiocarbamate by coal powder is better in accordance with the Pseudo-second-order kinetic model. The control steps of the adsorption rate included external liquid film diffusion,surface diffusion and particle diffusion,but surface diffusion is the dominant factor.