预处理池也可以用于储存二级污泥。
A pretreatment tank can also serve to store secondary sludge.
现有污水处理池需要符合严格的环境标准，该设备则被放置于其中。
The devices are placed in existing wastewater treatment lagoons that need to meet stricter environmental standards.
水处理期间，暂停处理池、养虾池间水循环，过滤系统持续运转。
The water circulation among treating pond and shrimp ponds was temporarily stopped, filtering system continually ran during treating water.
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