一体式光催化氧化与生物降解反应器处理含苯酚和2,4,6-三氯酚废水
首发时间:2010-12-28
摘要:采用一体式光催化氧化与生物降解反应器,在波长为254 nm的紫外辐射条件下进行生物降解苯酚与2,4,6-三氯酚(2,4,6-TCP)混合液。分别比较了分步耦合与同步耦合对苯酚降解速率的影响,同时还比较了间歇和连续条件下苯酚与2,4,6-TCP混合液在单独光催化、单独生物降解以及光催化与生物降解共同作用下的降解规律。实验结果表明:采用光/生物联合方法对混合溶液进行降解时,混合溶液中苯酚和2,4,6-TCP的降解速率为最快,相应COD的平均去除率也最高。
关键词: 光催化 生物膜 苯酚 2,4,6-TCP TiO2
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Integrated photocatalytic-biological reactor for treatment of wastewater containing phenol and 2,4,6-trichlorophenol
Abstract: Integrated photocatalytic and biological reactor was used for biodegradation of phenol and 2,4,6-trichlorophenol (TCP) under UV illumination with 254 nm of wavelength together with biofilm. Intimately coupled photocatalysis and biodegradation (P&B) was compared with sequential coupled photocatalysis and biodegradation to investigate phenol and TCP removal rate. The phenol and TCP removal regularities, respectively by photocatalysis alone (P), biodegradation alone (B) and intimately coupled photocatalysis and biodegradation (P&B), were also investigated. The experimental results indicated that phenol and TCP removal rates by P&B were more than that by P and B, and corresponding COD removal percentage was the highest by P&B among three protocols.
Keywords: photocatalysis, biofilm, phenol, 2,4,6-trichlorophenol, TiO2
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No.4399737369838129****
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