Inhibiting filamentous sludge bulking by using reagent is expensive and easy to recurrence after reagent is stopped adding. In order to solve this problem. This experiment investigate the feasibility of inhibiting filamentous sludge bulking through adjusting process parameters alone by using SBR. The inhibition effect of organic loading rate, dissolved oxygen （DO） , feeding pattern and some other common operation parameters on filamentous sludge bulking were investigated systematically. The results show that, it is difficult to inhibit filamentous sludge bulking through increasing organic loading rate alone （ 〉 0.40 d^-1 ）. However, if aerobic time and aeration rate are not set up properly, viscosity sludge bulking is prone to happen; The effect of inhibiting filamentous sludge bulking through increasing ρ00（ 4 - 6 mg/L） alone is not obvious, meanwhile, excessive aeration could make negative impact on phosphorus removal performance; Although impulse feeding pattern could enhance storage selective function, It makes little effect on inhibiting filamentous sludge bulking; setting up proposed anoxic （anaerobic） phase is an effective method to inhibit filamentous sludge bulking.%针对药剂法抑制丝状菌污泥膨胀成本高且停止投加后容易复发，通过调节工艺参数，考察了工艺法抑制丝状菌污泥膨胀的可行性．试验采用SBR反应器，系统地研究了有机负荷、溶解氧和进水方式等常见运行参数对丝状菌污泥膨胀的抑制效果．结果表明，增加有机负荷（〉0．40kgCOD／（kgMLSS·d））难以抑制丝状菌污泥膨胀，且好氧时间和曝气量设置不当还容易引发黏性膨胀；单独提高ρ00（4～6mg／L）对抑制丝状菌膨胀效果并不明显，并且过度曝气还会对除磷产生负面影响；脉冲进水方式虽然可以强化贮存选择作用，但是对丝状菌膨胀抑制并无明显效果；增设前置缺（厌）氧段是抑制丝状菌污泥膨胀的有效手段．
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