Daily Water Treatment Question (11.27)
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1. Depending on the difference in ( ), sedimentation tanks can be divided into three types: horizontal flow, radial flow, and vertical flow. A. Structure of the pool B. Direction of water flow C. Volume of the pool D. Water flow velocity 2. Dissolved oxygen is an important parameter in the self-purification process of water bodies; it can reflect ( ) in those water bodies. A. Oxygen consumption index B. Dissolved oxygen index C. Organic matter content D. Relationship between oxygen consumption and dissolved oxygen B;D
B. Direction of water flow D. Relationship between oxygen consumption and dissolved oxygen
1. Depending on the difference in ( ), sedimentation tanks can be divided into three types: horizontal flow, radial flow, and vertical flow. B. Direction of water flow 2. Dissolved oxygen is an important parameter in the self-purification process of water bodies; it can reflect ( ) in those water bodies. D. The equilibrium relationship between oxygen consumption and dissolved oxygen