Urgent!! ! ! May I ask how raising the outlet above the surface of the filter media prevents negative water head?

2021-03-03View Original

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Urgent!! ! ! May I ask how raising the outlet above the surface of the filter media prevents negative water head?

Reply #22021-03-03

To avoid negative head, one must address the issue at the source: either increase the water depth above the sand to boost potential energy, or control head loss. Alternatively, the outlet can be raised above the surface of the filter sand. May I ask how raising the outlet above the surface of the filter sand prevents negative water head?

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