Is rapid separation biotechnology the most advanced sewage treatment process?

The so-called rapid separation biotechnology is carbon adsorption technology, which originated in Japan and is a concept. Finally, it was patented by some domestic companies. It must be combined with constructed wetland to make the water quality meet the standard. It has little effect in sewage field alone, and its investment cost and operation cost are higher than those of traditional A/O process. Moreover, the carbon adsorption cycle is short, and it is saturated in less than one year. Generally used for sewage.