循環農業：農業廢棄物高價值化【環境工程學系/林坤儀特聘教授】
| 論文篇名 | 英文：Efficient treatment for landfill leachate through sequential electrocoagulation, electrooxidation and PMS/UV/CuFe2O4 process 中文：通過順序電凝，電氧化和PMS / UV / CuFe2O4工藝對垃圾滲濾液進行有效處理 |
| 期刊名稱 | SEPARATION AND PURIFICATION TECHNOLOGY |
| 發表年份,卷數,起迄頁數 | 2020, 242, 116828 |
| 作者 | Ghanbari, Farshid; Wu, Junxue; Khatebasreh, Masoumeh; Ding, Dahu; Lin, Kun-Yi Andrew(林坤儀)* |
| DOI | 10.1016/j.seppur.2020.116828 |
| 中文摘要 | 由於有機和無機化合物的高濃度，垃圾填埋場滲濾液是最嚴重的環境問題之一。據報導，有幾種方法可以對垃圾滲濾液進行處理和排毒。但是，高有機負荷和難溶有機污染物的存在導致至少在單獨使用時這些方法效率低下。本工作推薦了一系列過程：電凝（EC），電氧化（EO）和過氧一硫酸鹽（PMS）/ UV / CuFe 2 O 4（基於硫酸根的高級氧化工藝，SR-AOP）用於處理垃圾滲濾液。對每個過程進行參數評估，包括pH，電流密度，電極類型，催化劑負載，PMS劑量和反應時間。研究了用於EC工藝的Al和Fe電極以及用於EO工藝的Pt，PbO 2和石墨。結果表明，對於EC和EO ，Fe和PbO 2分別比其他電極更有效。EC，EO和SR-AOP的COD去除效率分別高達60.0％，50.0和77.9％。對於COD，TOC，BOD和氨氣（NH 4），該順序過程的去除效率分別為95.6、90.5、91.6和99.8％。-N）。根據BOD / COD比和碳的平均氧化態（AOSC），可生物降解性得到顯著提高。生物降解試驗表明，有機物在7天內被活性污泥完全降解。植物毒性實驗還證明了每個過程後的植物毒性都大大降低了。結果證實，所提出的序列對於去除COD，降低植物毒性和改善生物降解性是有效的，對於垃圾滲濾液來說是可接受的處理方法。 |
| 英文摘要 | Landfill leachate is well known as one of the most serious environmental problems due to the high concentrations of organic and inorganic compounds. Several methods have been reported for the treatment and detoxification of landfill leachate. However, high organic load and the presence of refractory organic pollutants resulted in inefficiency of those methods when at least applied alone. The present work recommended a sequence of processes: electrocoagulation (EC), electrooxidation (EO) and peroxymonosulfate (PMS)/UV/CuFe2O4 (sulfate radical-based advanced oxidation process, SR-AOP) for treatment of landfill leachate. A parametric evaluation was conducted for each process including pH, current densities, electrode type, catalyst loading, PMS dosage and reaction time. Al and Fe electrodes for the EC process and Pt, PbO2 and graphite for the EO process were investigated. The results showed that Fe and PbO2 were more efficient than other electrodes for EC and EO respectively. COD removal efficiencies were up to 60.0, 50.0 and 77.9% for EC, EO and SR-AOP, respectively. Removal efficiencies for the sequential process were 95.6, 90.5, 91.6 and 99.8% for COD, TOC, BOD and ammonia (NH4-N) respectively. Biodegradability was significantly enhanced according to the BOD/COD ratio and the average oxidation state of carbon (AOSC). Biodegradation test indicated that the organic matter was completely degraded by activated sludge in seven days. Phytotoxicity experiments also demonstrated a considerable reduction in phytotoxicity after each process. The results confirmed that the proposed sequence is efficient for COD removal, phytotoxicity reduction and biodegradability improvement being an acceptable treatment for landfill leachates. |
