在運用不同SBR操作步驟來實現從模擬廢水中去除營養。三步－(An/Ax/Ox)、四步-
(An/Ox/Ax/Ox)
五步
(An/Ax/Ox/Ax/Ox)操作在不同的操作時間下，并對其去除結果進行測定和比較。對COD和
NH4-N在不同的操作過程中進行比較，三步操作明顯最好。這是因為大部分COD和
NH4-N在最初的三個步驟中去除的。但是，PO4-P和NO3-N的去除效果，五步操作高于其他操作。反硝化作用發生在第二個間氧階段，多余的P是在第二個好氧階段吸收，NO3-N和PO4-P在五步操作中明顯高。最后，五步操作包括An/Ax/Ox/Ax/Ox階段，操作時間分別為1/1.5/4/1.5/2
h，COD，NH4-N，NO3-N和PO4-P濃度降到37
mg L-1，5.6
mg L-1，0.9
mg L-1 和
3.2 mg L-1，去除了94%的COD、90%的NH4-N、64%NO3-N和PO4-P57%。
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