| Based on the problems of the Biological Contact Oxidation reactor, empolder a bottle shape filler ,this filler has condition of the inclined flow precipitation ,low velocity of flow in it, in favor of the microorganism to growth and inhabit, enhance the transfer of oxygen ,highly efficiency to deal with the wastewater , highly drainage quality and low cost, and even we can get it from the living garbage , this reactor was called Bottle-Shape Filler Contact Oxidation Reactor (BSFCOR).During one year experimental period , the performance of the reactors were studied such as hydraulic retention time , temperature ,PH value , concentration of mephitical substance and the degradation rate of N nutriment, etc , moreover , the dynamics model of BSFCOR reactor deal with the sewerage was analyzed.Through the results of test we could conclude as follows: the flow style in BSFCOR reacter is entirety mixed; BSFCOR reactor has the effect of similarity inclined flow precipitator, it can hold up the granule contamination in very shout time ;bottle shape filler can effectively increase the oxygen transfer coefficient of 33%; the velocity of bio-film domestication and shape up rapidly; maintains many species of microorganism and the biomass is excess, the removal efficiency was high , the removment of COD_cr in domestic wastewater at HRT=lh is 90%, and the COD_cr of effluent is less than 50mg/l; BSFCOR was easy to adapt the environmental factor , it has a strong ability to deal with wastewater in low temperature(under 10℃), low PH value(under 5) and high concentration of potassium dichromate solution(above 10 mg/l), it can be used in low temperature areas and industry wastewater; the removal rate of NH3-N and T-N is equivalency as others reactor ,so that if this was stressed , BSFCOR technics should be mended, the dynamics model of BSFCOR reactorwas: C = 337.04 exp(-X3.67t)(1-erfζ) .
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