【正文】 一種新型的 Carrousel 氧化溝。中國 給水排水， 2020， 19(9)： 45~47。工業(yè)用水 與廢水， 2020， 34(6)： 49~52。 van Straten, G. Forward and backward u ncertainty propagatio n: an oxidation ditch modelling example. Wat er Research, 2020,37(2):429~435. [9] 施成忠。 [4] 李正明。C )Two is the liquid of admixture that spirit equipments that skillful design, the form machine descends to install to lead to flow ,the anoxia of take out, adopt the underwater propeller solution current velocity problem。Suchas enterthe watercarries big let upintothe water measures or the enlargement reflux as the dirty mire grain small lower the spirit machine turn discovers versanitricturning,shouldletup thetolerance,enlarge the reflux or row the mire measures。 in 1954 at Dutch throw in the usage for the velY first nme.secause its a water fluid matter good, circulate the stability and manage convenience etc. technique characteristics, already at domestic and international and extensive application in live the dirty water to is dirty to manage aquecustv with the industy[1]. Current application than oxidize extensively the ditch type include:The ( Pasveer) oxidizes the ditch, the (Carrousel) oxidizes the ditch, ( Orbal) oxidizes the ditch, the type of T oxidizes the ditch( three ditch types oxidize the ditch), the type of DE oxidizes the ditch to turn to oxidize the ditch with the Integral oxidize the ditch because of the difference of esse in construction with circulating, therefore each characteristics[2].This text will introduce construction, mechanism, existent problem and its latest developments that Carrousel oxidize ditches primarily. 2. The Carrousel oxidizes the construction of the ditch The Carrousel Oxidize the ditch to be researched to manufacture by Dutch DHV pany development in the last the panyofDHVinfou ndationoftheditchin theoriginal Carrousel to permited specially the pany EIMCO to invent again with its patent in the United States Carrousel 2020 system realizes the living creature of the higher request takes off the nitrogen with d in the world up to now more than 850 Carrousels oxidize the ditch with the Carrousel 2020 system are circulating From diagram therefore[3]. The Carrousel oxidizes the ditch the usage the spirit of that definite direction control with shake up the device, face to mix with the liquid deliver the level speed, from but make drive the liquid of admixture that shake up is in oxidize ditch shut match outlet circulate nowrnererore oxidize the ditch have the special hydraulics flows the ,current plete mix with the characteristics of the type reactor, have the characteristics that push the flow type reactor again, the ditch inside exsrts obviously of deliquescence oxygen density steps the ditch cross section is rectangle or trapezoids, the fiat surface shape is many for oval, the ditch internal water is deep general for 4 .5 m , the breadth is deep pare for 2:1, also have the deep wate r amount to 7 ms of, ditch inside average speed in water current is mS/ ditch spirit admixture equipments contain surface spirit machine, the spirit of turn to brush or turn the dish and shoot to flow the spirit machine, pipe type spirit machine with promote take care of type spirit machine etc., match with in recent years usage still contain underwater push machine[4~6]. 3. The Carrousel oxidizes the mechanism of the ditch The Carrousel oxidizes the ditch handles dirty and aqueous principle The at the beginning mon Carrousel oxidizes the dirty water In inside In craft of the ditch direct with dirty mire In reflux together enteroxidize theditch surface spiritmachinemakesfuse In the liquid of admixture the density of the oxygen DO increases about 2 the 3 mgsl this kind of well the term of the oxygen, the microanism gets the enough deliquescence oxygen es and go to d