【正文】 1 摘 要 本設(shè)計項目所處理的污水主要是由天然氣凈化廠廠區(qū)工業(yè)廢水和公共建筑用水以及廠區(qū)生活用水組成。其混合污水最大日設(shè)計流量為 Q=8000m3/d，總變化系數(shù)為 K= , 該廠現(xiàn)有人口 8000，隨著廠區(qū)發(fā)展速度的加快，廠區(qū)污水的排放嚴重威脅著該河水質(zhì)，為了避免該河水質(zhì)惡化，該廠擬建一座廠區(qū)污水處理廠，以解決生活污水和工業(yè)廢水的污染問題。設(shè)計水質(zhì)經(jīng)環(huán)保部門監(jiān)測，污水主要污染物 COD、 SS、 BOD TP、 TN 以及重 金 屬 和 有 毒 物 質(zhì) 少 量 ， 其 污 水 水 質(zhì) 如 下 ： COD=360mg/l , SS=200mg/l ， BOD5=160mg/l， PH=69，歷年最高氣溫 ℃ 歷年最低氣溫 ℃，年平均氣溫℃，最高月平均氣溫 ℃，最低月平均氣溫 ℃ 。 處理廠處理水質(zhì)為： BOD5≤10mg/l， CODcr≤ 50mg/l， SS≤ 10mg/l， NH3N≤ 5mg/l， TP≤ ，出水水質(zhì)符合國家的一級排放標準。 本設(shè)計中，采用 SBR 工藝處理該廠區(qū)污水。 SBR 工藝處理污水已有很長的時間，是一種較成熟的工藝，在國內(nèi)已有很多成功的工程實例。 處理構(gòu)筑物主要有曝氣沉砂池、SBR 反應池、污泥濃縮 池等，其主要構(gòu)筑物 SBR 反應池屬于間歇式反應器，本設(shè)計的SBR 反應池建成長方形，有利于減少建設(shè)費用。 SBR 工藝占地少，污泥產(chǎn)生量少，抗沖擊負荷能力強。通過調(diào)節(jié)污泥齡能達到同時脫氮除磷的目的，出水水質(zhì)好。 關(guān)鍵詞 ：總變化系數(shù) 。 SBR。 設(shè)計流量 。 脫氮除磷 . 2 Abstract The handled wastewater is formed mianly by industrial waste gas purification plant area and public building sewage, water and plant water position. The biggest day rated discharge of wastewater is 8000m3/d. Total changes coefficiet K = is 8000 persons in the factory. As plantfying process accelerates, in order to avoid The river water quality deterioration, a factory plant proposed sewage treatment plant to address sewage and industrial wastewater pollution problems , Design wastewater quality is monitored by the department of environmental protection. Major contanmints are CODcr,SS,BOD5,TP,TN,heavy metal and few poisonous material in the wastewater,. The wastewater quality is as follow: COD=360mg/l ,SS=200mg/l， BOD5=160mg/l， PH=69. The highest temperature is ℃ and the minimum temperature is ℃ over the years, year in average temperature is ℃ . The highest mean monthly temperature is ℃ ,and the minimum mean monthly temperature ℃ . Sewage treatment plant handling water quality is: BOD5≤ 10mg/l， CODcr≤ 50mg/l， SS≤ 10mg/l， NH3N≤5mg/l， TP≤ In the design, the plant sewage is handled with SBR technology. Used SBR technology to handle sewage have had very long time. It is a kind of mature are the project example of many successes in our country. Mainly handling buildings are aeration setting pot, SBR reactor and mud concentrated pool etc. The SBR reactor belongs to intermittence type responser, The SBR reactor of this design is established into rectangle, helpful to reduce construction cost. It coveres less land, produces less mud,and it is strong to fight impact load ability. Through regulating mud age can be nitrogen and phosphorus removal at the same time,and effluent water quality is good. Keywords: Total changes coefficient。 Sequencing Batch Reactor。 Rated discharge。 Nitrogen and phosphorus removal. 第 I 頁 共 III 頁 目 錄 任 務(wù) 書 錯誤 !未定義書簽。 畢業(yè)設(shè)計開題報告 錯誤 !未定義書簽。 摘 要 1 Abstract 2 目 錄 I 第 1章 概 述 1 ..........................................................................................1 設(shè)計題目 ................................................................................................1 設(shè)計依據(jù) ................................................................................................1 設(shè)計任務(wù)與內(nèi)容 .....................................................................................2 設(shè)計水量 ...........................................................................................................3 污水來源及狀況 .....................................................................................3 污水量計算 ............................................................................................3 處理程度 ...........................................................................................................3 進出水水質(zhì) ............................................................................................3 去除率 ...................................................................................................3 PH值 .....................................................................................................4 重金屬及有毒物質(zhì) .................................................................................4 第 2章 城市污水處理方案的確定 5 確定污水處理方案的原則 ...................................................................................5 污水處理廠建設(shè)規(guī)模及廠址選擇原則 .................................................................5 污水處理廠建設(shè)規(guī)模及廠址選擇原則 ......................................................5 ....................................................................7 ................................................................................................7 ................................................................................................7 污水處理方案的確定 ..........................................................................................7 處理標準的確定 .....................................................................................8 污水處理路線的選擇 ..............................................................................8 污水處理工藝流程方案介紹 ............................................................................. 10 的因素 ........................................................... 10 工藝方案分析 ......................................................................................... 11 A2/O法 ................................................................................................. 12 SBR法 .................................................................................................. 15 ................................................................................................... 18 A2/O工藝流程 ...................................................................................... 18 SBR 工藝流程 ...................................................................................... 19 主要構(gòu)筑物的選擇 ..............................................................