Oxidize the ditch craft in dirty water handle of application and development Summary This text expatiated primarily the Carrousel oxidizes the construction craft mechanism of the ditch and circulate the problem exsited in the process with the homologous the method of solution Finally, introduce the Carrousel oxidize the latest research progress of the ditch and pointed out the future and main research direction Key phrase: The Carrousel oxidizes the ditch divideds by the hosphor takes off the nitrogen construction mechanism Application and Development of Carrousel Oxidation Ditch Process on Wastewater treatment Abstract: The structure and the techniques of carrousel oxidation ditch process on nitrogen and phosphor removal are introduced in this paper. The problems inrunning and their corresponding resolvent are also pointed At last, The authorshowed the up to date research improvement and the mainly future research dire-ction Key words: Carrousel; oxidation ditch; nitrogen and phosphor removal; structure; techniques 1. Foreword Oxidize the ditch( oxidation ditch)again a continuous circulation spirit pond( continuous loop reactor) is a live and dirty mire method a kind of to transform Oxidizing the dirty water in ditch handles the craft be researched to manufacture by the hygiene engineering graduate school of Holland in the 50s of 20 centuries success. Since in 1954 at dutch throw in the usage for the very first time because its a water fluid matter good, circulate the sta bility and manage convenience etc. technique characteristics, already at domestic andOxidize the ditch craft in dirty water handle of application and development Summary: This text expatiated primarily the Carrousel oxidizes the construction, craft mechanism of the ditch and circulate the problem exsited in the process with the homologous the method of solution.Finally, introduce the Carrousel oxidize the latest research progress of the ditch and pointed out the future and main research direction. Key phrase: The Carrousel oxidizes the ditch divideds by the phosphor takes off the nitrogen construction mechanism Application and Development of Carrousel Oxidation Ditch Process on Wastewater Treatment Abstract: The structure and the techniques of carrousel oxidation ditch process on nitrogen and phosphor removal are introduced in this paper. The problems inrunning and their corresponding resolvent are also pointed. At last, The authorshowed the up to date research improvement and the mainly future research dire-ction. Key words: Carrousel; oxidation ditch; nitrogen and phosphor removal; structure;techniques 1. Foreword Oxidize the ditch( oxidation ditch) again a continuous circulation spirit pond( Continuous loop reactor), is a live and dirty mire method a kind of to transform.Oxidizing the dirty water in ditch handles the craft be researched to manufacture by the hygiene engineering graduate school of Holland in the 50's of 20 centuries success.Since in 1954 at Dutch throw in the usage for the very first time.Because its a water fluid matter good, circulate the stability and manage convenience etc. technique characteristics, already at domestic and