本文選題：MFEDI + 離子交換樹脂　； 參考：《浙江大學》2015年碩士論文

【摘要】：無膜電去離子(MFEDI)是一項從EDI中發(fā)展而來的新型綠色脫鹽技術,其創(chuàng)新性地實現(xiàn)了樹脂的無膜電再生。MFEDI采取處理與電再生交替運行方式實現(xiàn)水的綠色凈化。處理時,以離子交換柱中填充的樹脂實現(xiàn)水的脫鹽；電再生時,以強電場促進離子交換平衡向再生反應方向移動,同時,用高純水將解吸的鹽離子帶走。本論文研究了MFEDI制備高純水的工藝參數(shù)及其電再生機理,主要工作包括三部分：樹脂層參數(shù)影響、再生參數(shù)影響、MFEDI電再生機理。研究結果表明：弱酸-強堿混合樹脂(D113-550A)決定著MFEDI整體性能。通過研究D113-550A的配比和層高對MFEDI性能的影響,確定了D113-550A的最優(yōu)配比為1：2,最優(yōu)層高為30cm。通過研究不同再生參數(shù)對MFEDI再生性能的影響,確定了最優(yōu)再生參數(shù)為：再生時長20min,再生流速25m/h,再生電流密度100A/m2。在最優(yōu)工藝參數(shù)下,MFEDI的能耗和水回收率分別為0.594 kWh/m3水和82.4%。不同樹脂組合的電再生實驗表明,陽離子幾乎不通過D113樹脂逆向電遷移；陰離子主要在550A樹脂相內電遷移,550A的離子型式?jīng)Q定了混合樹脂的導電能力；水解離主要發(fā)生在D113和550A樹脂的接觸面上,并為D113和550A的再生提供了82.4%以上的H+和OH-。
[Abstract]:MF-EDI is a new type of green desalting technology developed from EDI. It innovatively realizes the green purification of water by alternate operation of membrane free electroregeneration and electroregeneration. When treated, the desalination of water was realized by the resin filled in the ion exchange column, and the ion exchange equilibrium was moved to the regenerative reaction direction by a strong electric field during the electric regeneration, and the desorbed salt ions were taken away with the high purity water. In this paper, the process parameters and electroregeneration mechanism of high purity water prepared by MFEDI were studied. The main work includes three parts: the influence of resin layer parameters and regeneration parameters on the electroregeneration mechanism of MFEDI. The results show that D113-550A) determines the overall properties of MFEDI. By studying the effect of the ratio of D113-550A and layer height on the properties of MFEDI, the optimum ratio of D113-550A is 1: 2 and the optimum height of layer is 30 cm. By studying the effect of different regeneration parameters on the regeneration performance of MFEDI, the optimal regeneration parameters are determined as follows: regeneration time 20 min, regeneration velocity 25 m / h, regeneration current density 100 A / m 2. The energy consumption and water recovery were 0.594 kWh/m3 and 82.4 kWh/m3, respectively. The electroregeneration experiments of different resin combinations showed that the cation hardly passed through D113 resin reverse electromigration, and the ionic type of anion mainly in 550A resin phase determined the conductivity of the mixed resin. The hydrolytic dissociation mainly occurred on the contact surfaces of D113 and 550A resins and provided more than 82.4% H and OH-OH for the regeneration of D113 and 550A.
【學位授予單位】：浙江大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：TQ123.5

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相關期刊論文 前10條

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本文編號：1823844