Catfish are stocked and harvested in the last phase of the facility's wastestabilizationpond 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。
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Wastestabilizationpond 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.