在淨水廠處理程序中因為含藻類之原水對於淨水程序有著縮短了濾程造成濾池阻塞等問題，為了改善這問題，因此本研究使用了鐵粉(Fe)三氧化二鐵(Fe 2O3)與四氧化三鐵(Fe 3O4)等三種市售氧化鐵進行藻類吸附與?燒改質，以比較改質前後之除藻效率。
本次研究以吸光值與濁度做為藻類的定量，以不同量的氧化鐵進行混凝程序實驗，再以濁度計與分光光度計之數值比對藻類吸附與沉澱較佳的氧化鐵。經過比較後實驗中選用了M-Fe3O4和鐵粉兩種材料，其中M-Fe3O4有59％的除藻效率，Fe的除藻效率為75％，以超音波破壁回收將藻與氧化鐵分離，比較再使用與新鮮氧化鐵的除藻效率，發現Fe在超音波回收再使用其濁度由61.8％下降至49％吸光值則由78％下降至48％的沉降較新鮮氧化鐵除理效果有些微下降的趨勢，但M-Fe3O4卻未因回收再使用而影響其處理效率，反而除藻效率由59％上升至68％變得更佳。 In the water treatment plant treatment process, because the raw water containing algae has problems such as shortening the filter process and causing the filter to block the water purification process, in order to improve the problem, the study used iron powder (Fe) ferric oxide (Fe2O3). The algae adsorption and calcination are modified with three commercially available iron oxides such as triiron tetroxide (Fe3O4) to compare the algae removal efficiency before and after the modification.
In this study, the absorbance and turbidity were used as the quantification of algae, the coagulation procedure was carried out with different amounts of iron oxide, and the preferred iron oxide was adsorbed and precipitated by algae by the value of the turbidity meter and the spectrophotometer. After comparison, M-Fe3O4 and iron powder were selected in the experiment, among which M-Fe3O4 has 59% algae removal efficiency and Fe algae removal efficiency is 75%. Ultrasonic wave-breaking recovery separates algae from iron oxide. Compared with the algae removal efficiency of fresh iron oxide, it was found that the recovery of Fe in ultrasonic recovery and its turbidity decreased from 61.8% to 49%, and the absorption value from 78% to 48% was lower than that of fresh iron oxide. There is a slight downward trend, but M-Fe3O4 has not been affected by recycling and reuse, but the algae removal efficiency has increased from 59% to 68%.
