氮序
- 【天】nitrogen sequence
氮序-
循环活性污泥法CASS工艺是一种将变容积活性污泥法和生物选择器原理有机地结合起来，具有同步脱氮除磷的以序批曝气&非曝气方式运行的间歇活性污泥处理工艺。
Cyclic activated sludge system ( CASS ) originates from subsequence activated sludge system , combining variable volume activated sludge processing with biological selector organically , on which can simultaneously remove nitrogen and phosphorus .
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施氮对各级根序的生物量、比根长影响不显著。
The effect of nitrogen fertilization on root biomass and specific root length were not significant . 3 .