7 结论
综上所述，导流曝气生物过滤技术在国内外20多年的应用和发展中日趋成熟，实践证明在污水的二级或三级处理中采用是较为适宜的。问题是在该技术的应用中如何提高容积负荷（kgBOD5／m3·d），降低水力停留时间（h），缩小反应器体积，减少占地面积，节省项目投资，降低运行费用，而又要保证出水达到标准要求。使该技术在污水处理中的应用更为合理并具有强劲的生命力。贵州长城环保科技有限公司新研制成功的“导流曝气生物滤池”是一种高负荷、淹没式、固定化生物膜三相导流反应器清污分流技术，其主要技术关键是提供一种导流曝气生物过滤池，将生物氧化、生物过滤和沉降回流结合在一起，通过反冲洗雨生实现滤池的周期性运行，在污水的二级或三级处理中，充分地显示出其处理负荷高、占地面积少、基建投资低、运行费用低等优越性，且出水水质达到或优于国家标准，实现中水回用。充分体现出其污水处理工程具有创新性、技术水平具有前瞻性、工程应用具有可靠性、地域应用具有代表性、实际操作具有稳定性、工程建设与运行具有经济性，这对污水处理部门而言，无疑是一种尚佳的选择。
Application of the Conduction Current Biofilter in Water Treatment
LIU Fei
(Guizhou Great Wall Environmental science and Technology Co., Ltd., Guiyang 550000)
Abstract: The conduction current biofilter is filters the principle according to the conduction current biology, uses one kind of sewage treatment filter tank which the certain craft and the flow manufacture becomes, this filter tank technology has attained the national monopoly (the patent number: ZL200420033672.4). The filtertank structure is the two conduction current type, for the biological contact, and filters the area for the biology. The filter tank technical key is the biological oxidation, the biology filters with the subsidence backflow unifies in together, through counter- flushing regeneration realization filter tank periodicity movement. In the sewage two levels of or in three level of processing practical applications, fully demonstrated its processing effect good, shoulders, the area high few, the initial cost low, the operating costare few and so on the merit, its water leakage water quality achievedor surpasses the national standard, in the realization the water sales commission.
Key word: Conduction current biofilter; Sewage; Water sales commission