The zeolite rotary wheel can concentrate the waste gas with a large air volume and low concentration into waste gas with a high concentration and small air volume, thereby reducing the equipment investment cost and operation cost and improving the treatment efficiency of VOC waste gas. The concentration area of the zeolite rotary wheel can be divided into a treatment area, a regeneration area, and a cooling area, and the concentration rotary wheel operates continuously in each area. After passing through the pre-filter, the VOC organic waste gas enters the treatment area of the concentration rotary wheel device. In the treatment area, VOCs are adsorbed and removed by the adsorbent, and the purified air is discharged from the treatment section of the concentration rotary wheel. The VOC organic waste gas adsorbed in the concentration rotary wheel is desorbed after being treated by hot air in the regeneration area, achieving a concentration of 5 to 15 times. The concentration rotary wheel is cooled in the cooling area. The air passing through the cooling area is heated and then used as the regeneration air, achieving the effect of energy conservation.