Abstract:To solve the problems of large volume and low adsorption rate of traditional adsorption equipment, the resorcinol wastewater was simulated and treated using rotating packed bed (RPB) as adsorption equipment, activated carbon as adsorbent. The effects of supergravity factor, pH value, liquid flow, temperature, and initial resorcinol concentration on the removal efficiency of resorcinol were investigated, and the adsorption isothermal equilibrium line and kinetic data were measured and the comparison with the removal efficiency of resorcinol obtained by fixed bed and magnetic strrer under approprite operating conditions were performed. Results show that the adsorption equilibrium relation mainly obeys Freundlich model, the heat of adsorption is 14.65 kJ·mol-1. The appropriate operating conditions obtained are: liquid flow of 50 L·h-1, supergravity factor 41.30, pH=5, temperature 20 ℃, initial concentration of wastewater of 900 mg·L-1 and adsorption time 2 h. In this case, the removal efficiency of resorcinol reaches 96.86%. Under the same operating conditions, compared with the fixed bed and magnetic stirrers, the removal efficiency by RPB increases by about 20% and 14%, respectively. The adsorption process is mainly consistent with the pseudo-second order kinetic model. The adsorption rate constant of the adsorption process reaches 2.576×10-3 which is 1.626 and 1.413 times higher than the conventional adsorption method of the fixed bed and magnetic stirrer, respectively.