缺氧區(qū)好氧區(qū)容積比對a2o工藝反硝化除磷的影響-資料下載頁
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【正文】 。② 當(dāng)缺氧區(qū)與好氧區(qū)的容積比增大時(shí),系統(tǒng)的出水水質(zhì)變好,這是因?yàn)樵黾尤毖鯀^(qū)容積提高了缺氧區(qū)的水力停留時(shí)間以及反硝化除磷菌在聚磷菌中所占的比例,進(jìn)而提高了對有機(jī)物、氮及磷的去除率。③ 增加缺氧區(qū)與好氧區(qū)的容積比有利于降低曝氣能耗,減少運(yùn)行費(fèi)用,計(jì)算表明n為0. 60時(shí)的曝氣能耗要比n為0. 33時(shí)節(jié)省約15%。但是在增加缺氧區(qū)與好氧區(qū)容積比時(shí),應(yīng)適當(dāng)調(diào)整內(nèi)循環(huán)回流比,以使缺氧區(qū)有足夠的電子受體,否則會發(fā)生二次釋磷現(xiàn)象。參考文獻(xiàn):[1] Gerakd M Stevens, James L Barnard, Barry Rabinowitz.Optimizing biological nutrient removal in anoxic zones[J]. WaterSciTechno,l 1999, 39 (6): 113118.[2] Bortone G, SaltarelliR,AlonsoV,et al. Biological anoxicphosphorus removal—the DEPHANOX process[J]. WaterSciTechno,l 1996, 34 (1): 119128.[3] Kuba T,Van LoosdrechtM CM,Heijnen J J. Phosphorusand nitrogen removal with minimal COD requirement byintegration of nitrification in a twosludge system [ J].WaterRes, 1996, 30(7): 17021710.[4] 王曉蓮,王淑瑩,彭永臻,等. A2O工藝中反硝化除磷及過量曝氣對生物除磷的影響[J].化工學(xué)報(bào), 2005,56(8): 15651570.[5] APHA. Standard Methods for the Examination ofWaterand Wastewater [M ]. Washington: American PublicHealth Association, American Water Works AssociationandWaterEnvironmentFederation, 1992.[6] Yuan Zhiguo,Adrian Oehmen, Pernille Ingildsen. Controlof nitrate recirculation flow in predinitrification systems[J]. WaterSciTechno,l 2002, 45 (45): 2936.作者簡介:曹雪梅(1982 ), 女, 滿族, 遼寧開原人, 碩士研究生, 研究方向?yàn)槲鬯摰准夹g(shù)及其過程控制。Email:caoxuemei19820428@ yahoo. . 責(zé)任作者:彭永臻收稿日期:20061013
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