The bulking sludge caused by the overgrowth of filamentous bacteria is one of the most difficult problems occurred in activated sludge systems.
在活性污泥系统中，由丝状菌过度繁殖引起的污泥膨胀是最难解决的问题之一。
The tubificidae, one type of metazoa was chosen to control activated sludge bulking which was caused by filamentous bacteria.
研究了一种后生动物—颤蚓对丝状细菌引起的活性污泥膨胀的控制效果。
Activated sludge process used most widely in wastewater treatment plant is often accompanied by filamentous bulking which happens readily and harms the operation of activated sludge process seriously.
活性污泥法是采用最普遍的污水处理工艺，而丝状菌污泥膨胀则是该工艺污水运行中易发生、危害大的问题。
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