However, there has been no systematic overall report on impact factor of starting limited sludge bulking because of short history and higher difficulty in studying.

但是因该理论提出时间短，研究难度大，目前关于污泥微膨胀启动与维持的运行条件尚无全面、系统的报道。

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Specific gravity of activated sludge was increased by proliferation of phosphorus accumulating organisms (PAOs), which helped to resume state of limited sludge bulking after excessive sludge bulking.

聚磷菌的增殖使活性污泥比重增大，有助于发生恶性膨胀的污泥逐渐恢复沉降性能，维持活性污泥微膨胀。

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