【正文】
AbstractThe carrousel oxidation ditch is made to treat the municipal sewage of Pingliang city in this design, the effluent is made to reach the reuse Standards for Wastewater Discharge.There are four parts in the craft. The first part is the physical treatment system which is consist of grid and the sand pond. The second part is the biological treatment system, which is posed by the carrousel oxidation ditch and the second sink pond. The third part is the tertiary t