A two-SBR is a novel Simultaneous phosphorus and nitrogen removal system which combined an anaerobic/anoxic sequencing batch reactor (A2-SBR) and a nitrification SBR (O-SBR) together.

• 双SBR是将厌氧／缺氧间歇反应器(A_2-SBR)与具有硝化作用的SBR反应器(O-SBR)联合使用，进行脱氮除磷的工艺。