对污水的生物法脱氮除磷机理作了简要的分析，并介绍了几种高效、经济、实用的生物脱氮除磷新工艺。
The mechanism of biological denitrification and phosphorus removal is briefly analyzed in this paper, and several new effective and practical processes are also introduced.
根据研究提出了生物膜与活性污泥结合的新工艺，可同时高效地脱氮、除磷和去除有机物。
A new biofilm-activated sludge process is described in this paper. The high efficiencies of nitrification, denitrification and phosphorus removal can be simultaneously obtained by the new process.
根据研究提出了生物膜与活性污泥结合的新工艺，可同时高效地脱氮、除磷和去除有机物。
A new biofilm-activated sludge process is described in this paper. The high efficiencies of nitrification, denitrification and phosphorus removal can be simultaneously obtained by the new process.
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