I摘要本設(shè)計(jì)的主要目的是設(shè)計(jì)一處理能力達(dá)到 6 萬 m3/d,而且出水水質(zhì)能夠達(dá)到污水綜合排放二級(jí)標(biāo)準(zhǔn)的工藝流程。在認(rèn)真分析國內(nèi)外多種污水處理的理論技術(shù)和工程實(shí)踐的基礎(chǔ)上，針對(duì)葫蘆島市新城區(qū)生活污水現(xiàn)狀和該地區(qū)的水文、氣候等條件，仔細(xì)比較了普通活性污泥法、氧化溝、AB 法等處理工藝的優(yōu)缺點(diǎn)，最終確定了 A2/O 污水處理工藝。本設(shè)計(jì)工藝注重除磷脫氮工藝流程，其中詳細(xì)的闡述了該流程中各個(gè)環(huán)節(jié)的設(shè)計(jì)以及處理效果。A2/O 污水處理工藝的計(jì)算過程中，充分考慮了厭氧池、缺氧池、好氧池三個(gè)池子的合理性，在設(shè)備選型上即考慮實(shí)用性又要考慮經(jīng)濟(jì)性，以盡量節(jié)約資金。A 2/O 工藝處理后的污水出水基本上達(dá)到了預(yù)計(jì)標(biāo)準(zhǔn)，而且完成具有能夠處理葫蘆島市新城區(qū)生活污水的能力。通過本城市污水處理廠的設(shè)計(jì)，對(duì)本地區(qū)的環(huán)境、社會(huì)、經(jīng)濟(jì)方面都帶來了效益。關(guān)鍵詞：脫氮；除磷；A 2/O 工藝；污水IIAbstractThe main aim of this design is designing one handle capability attaining 6 thousand m3/d but also appears above water that the water quality attain the sewage synthesis and place in proper order two steps of criterion technological processes . In earnestly analyzes the domestic and foreign many kinds of sewage treatment the theory technology and in the project practice foundation, in view of Huludao city new city sanitary sewage condition and so on present situation and this local hydrology, climate, has carefully compared ordinary active processing craft the and so on sludge law, oxidation ditch, AB law good and bad points, finally has determined the A2/O sewage treatment craft. This design craft attention except phosphorus technical process, in detailed elaboration this flow each link design as well as processing effect. In the A2/O sewage treatment craft computation process, had fully considered tires of the oxygen pond, the oxygen deficit pond, the good oxygen pond three pools rationalities, is the consideration usability must consider the efficiency on the equipment shaping, to saves the fund as far as possible. After the A2/O craft processing sewage water leakage basically reached higher authorities the estimate standard, moreover completed has can process the Huludao city new city sanitary sewage the ability. Through this city sewage treatment plant design, to this local environment, the society, the economical aspect has all brought the benefit.Keywords：Nitrogen ；Except for Phosphorus ；A 2/O 's technology ；Sewage III