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Membrane scale inhibition principle education
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Membrane scale inhibition principle education
Technical explanation
進水內所有雜質(溶解和懸浮)的濃度在濾膜表面附近會是最高的。當滲透力量通過濾膜變成純水時,所有雜質都留在膜表面附近。膜表面(邊界層)旁邊的水層會越來越集中提高濃度(溶解和懸浮雜質)。這些濃度達到一定的穩定濃度,取決於進水速度、濾膜回收百分比和濾膜滲透通量(每天每平方英尺的滲透量加侖)。
請務必遵循濾膜製造商關於最小進水流量、最大濾膜回收百分比和最大濾膜通量的建議。這些建議是計算於正在處理供水的濾膜大小和品質。邊界層中溶解和懸浮固體的濃度控制濾膜的性能。較高的濃度意味著更高的滲透壓力,懸浮固體凝固和覆蓋膜表面的傾向較高,並且發生縮放的可能性更高。保持膜的正確操作條件是減少濾膜結垢的關鍵預防措施。