[1]吳靖宇,張愛軍,戴小東,等.平板膜在生活垃圾焚燒廠滲濾液處理系統(tǒng)中的應(yīng)用[J].中國給水排水,2020,36(16):126-131.
WU Jing-yu,ZHANG Ai-jun,DAI Xiao-dong,et al.Application of Flat Sheet Membrane in Leachate Treatment System of Domestic Waste Incineration Plant[J].China Water & Wastewater,2020,36(16):126-131.
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WU Jing-yu,ZHANG Ai-jun,DAI Xiao-dong,et al.Application of Flat Sheet Membrane in Leachate Treatment System of Domestic Waste Incineration Plant[J].China Water & Wastewater,2020,36(16):126-131.
平板膜在生活垃圾焚燒廠滲濾液處理系統(tǒng)中的應(yīng)用
中國給水排水[ISSN:1000-4062/CN:12-1073/TU] 卷: 第36卷 期數(shù): 2020年第16期 頁碼: 126-131 欄目: 出版日期: 2020-08-17
- Title:
- Application of Flat Sheet Membrane in Leachate Treatment System of Domestic Waste Incineration Plant
- Keywords:
- waste leachate; flat sheet membrane; MBR; membrane fouling; chemical cleaning; carbon nitrogen ratio; alkalinity
摘要:- MBR是生活垃圾焚燒發(fā)電廠滲濾液的常規(guī)處理工藝，但較少采用平板膜。主要介紹了平板膜系統(tǒng)在垃圾滲濾液處理工程實踐中的設(shè)計參數(shù)和運行情況。近1年的實際運行結(jié)果表明，平板膜在高有機負荷、高污泥濃度、高堿度MBR系統(tǒng)中可以穩(wěn)定運行，出水水質(zhì)達到設(shè)計要求。但是由于高堿度和高硬度離子的影響，導致膜表面存在結(jié)垢現(xiàn)象，膜通量下降，產(chǎn)水量減少，需要頻繁化學清洗。現(xiàn)場試驗通過改變運行工況，調(diào)整前端進水碳氮比，將生化進水碳氮比調(diào)整至4 ∶1，以及投加酸性溶液，逐步降低生化池內(nèi)pH值至7.5以下，結(jié)果表明，此項措施可減緩平板膜表面結(jié)垢進程，使得清洗頻率恢復(fù)正常。
Abstract:- MBR technology is commonly used to treat leachate in domestic waste incineration power plants, however, the flat sheet membrane is seldom used. The design parameters and operation conditions of flat sheet membrane system in the engineering practice of leachate treatment process was described. The actual operation results in the past year showed that the flat membrane could be operated stably in the MBR system under high organic load, high sludge concentration and high alkalinity conditions, and the effluent quality met the design requirements. However, due to the influence of high alkalinity and hardness ions, there was scaling on the membrane surface, resulting in the decrease of membrane flux and the decrease of water production, which required frequent chemical cleaning. Via adjusting the influent ratio of carbon to nitrogen to 4 ∶1 and adding acid solution, the pH in the biochemical tank could be gradually reduced to below 7.5. The result showed that the fouling process on the surface of the flat membrane could be slowed down, and the cleaning frequency could return to normal.
更新日期/Last Update: 2020-08-17
