Catfish are stocked and harvested in the last phase of the facility's waste stabilization pond system.
鲶鱼的放养和丰收都在工厂废水稳定塘系统的最后一阶段。
Waste stabilization pond has been used in wastewater treatment for a long time. Since 1950's, national and abroad researchers have done many studies on pond theory and application aspects.
生物稳定塘用于废水处理已有悠久的历史，自50年代开始国内外学者对其理论及应用问题进行了多方面的探讨。
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