發(fā)布時間：2018-06-10 09:19

  本文選題：污水處理 + 脫氮　； 參考：《農(nóng)業(yè)工程學報》2016年10期

【摘要】：為了調(diào)查反硝化同步脫氮除磷-側(cè)流磷回收新工藝的工藝效能,該試驗在該工藝穩(wěn)定運行條件下評價其污染物(化學需氧量、總氮、NH+4-N和PO3-4-P)去除能力和磷回收能力。結(jié)果表明:當進水中化學需氧量、總氮、NH+4-N和PO3-4-P的質(zhì)量濃度為239.2~259.5、39.6~43.8、38.2~41.8和8.72~11.40 mg/L,出水中相應的質(zhì)量濃度分別為15.2~21.6、8.5~9.6、3.6~4.7和0.31~0.49 mg/L,滿足國家《城鎮(zhèn)污水處理廠污染物排放標準》(GB18918-2002)一級A排放標準;COD主要在厭氧池被去除,NH+4-N主要在好氧硝化池中去除;污水中磷的去除主要由誘導結(jié)晶磷回收和生物除磷兩部分組成;整個工藝中,磷去除效率為95.9%,其中誘導結(jié)晶磷去除率占總?cè)コ实?1.5%,表明該工藝具有較大磷回收潛力。此外,后置曝氣池可對出水中COD、NH+4-N和PO3-4-P濃度起著把關(guān)作用,有助于提高出水水質(zhì)。
[Abstract]:In order to investigate the efficiency of the new process of simultaneous denitrification and phosphorus removal and side flow phosphorus recovery, the removal capacity and phosphorus recovery capacity of pollutants (chemical oxygen demand, total nitrogen NH _ 4-N and PO _ 3-4-P) were evaluated under the condition of stable operation of the process. The results show that: when the chemical oxygen demand in the influent, The mass concentrations of NH _ 4-N and PO _ 3-4-P were 239.2n 259.5N 39.6N 43.8N 38.2N 41.8 and 8.72n 11.40 mg / L respectively, and the corresponding mass concentrations in the effluent were 15.21021.6U 8.69.63.64.7 and 0.310.49 mg / L respectively, which met the National Standard for discharge of pollutants in Municipal Wastewater treatment plants GB18918-2002) and COD was mainly removed in anaerobic ponds. NH _ 4-N was mainly removed in aerobic nitrification tank. The phosphorus removal in wastewater is mainly composed of induced crystalline phosphorus recovery and biological phosphorus removal, and the phosphorus removal efficiency is 95.9in the whole process, among which the induced crystalline phosphorus removal efficiency accounts for 71.5 percent of the total removal efficiency, which indicates that the process has a large phosphorus recovery potential. In addition, the post-aeration tank can act as a gatekeeper for the concentration of CODN NH _ 4-N and PO _ 3-4-P in the effluent, which is helpful to improve the effluent quality.
【作者單位】： 安徽科技學院資源與環(huán)境學院;東南大學能源與環(huán)境學院;
【基金】：安徽省自然科學基金面上項目(1508085ME90) 安徽省教育廳自然科學重點研究項目(KJ2015A173)
【分類號】：X703.1

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本文編號：2002720