2005-09-202024-05-17https://scholars.lib.ntu.edu.tw/handle/123456789/684364摘要：摘要 台灣地區暴雨發生時河川水的濁度可能上升至1000NTU以上，淨水廠償因此被迫減量供水甚至關場停水。如何提升淨水廠對高濁度原水處理的能力，是目前不容忽視的問題。磁種絮聚分離技術逐漸受到環工界的重視。此技術主要的原理是利用磁性顆粒與水中的污染物結合，再利用磁場對磁性顆粒的磁力作用將污染物與水分離。若能將此技術運用在高濁度原水的處理上，應可達到降低原水濁度、減少混凝劑之加藥量及污泥量的效果。 本計畫擬針對高濁度的原水進行添加磁粉與外加磁場實驗，藉由磁場所提供之磁力提供額外的吸引力提升混凝沉澱程序去除濁度的效率，並尋求適當的磁粉添加量、混凝劑添加量、水質參數以及磁場強度等操作條件，期望能達到降低原水濁度、減少混凝劑之加藥量及污泥量的效果。另外本研究亦將研究膠羽沉降後分離回收磁性顆粒的可行性。 <br> Abstract: Abstract The turbidity of river water may exceed 1000 NTU when the rain storm happens in Taiwan. The waterworks are often forced to reduce the amount of water supply or stop. How to enhance the ability of the waterworks to treat the high turbidity river water is a important issue in Taiwan. Environmental engineers have paid much attention to the separation performance of magnetic aggregation technique. The magnetic gains and the pollutant in water can combine together and than separate from water by magnetic force imposed by the magnetic field. If the technique can be employed on the treatment of high turbidity river water in waterworks, the turbidity of treated water, the dosage of coagulant and the volume of sludge can all be reduced. This project tries to investigate the feasibility of using magnetic aggregation to enhance the efficiency of turbidity removal in coagulation and sedimentation process. The parameters for the technique, such as the dosage of magnetic gains and coagulant, water quality parameters and the intensity of magnetic field will be examined to find the suitable range for reducing the turbidity of treated water, the dosage of coagulant and the volume of sludge. Moreover, the practicability to reuse the magnetic gains from flocs after sedimentation process will also be studied.關鍵字磁種絮聚分離技術磁性顆粒磁場Keywords: magnetic aggregation techniquemagnetic gainsmagnetic field