本文選題：污水處理廠 + 改良A~2/O��； 參考：《青島理工大學(xué)》2015年碩士論文

【摘要】：赤壁市位于陸水河兩岸,美麗陸水湖的北側(cè)。赤壁市的發(fā)展離不開陸水河和陸水湖。而陸水湖是國家級重點(diǎn)旅游風(fēng)景名勝區(qū),水域面積58平方公里,蓄水量7.5億立方米,因此保護(hù)好它們,是赤壁市政府的責(zé)任,也是赤壁人民的愿望。赤壁市城東污水處理廠的建設(shè)將消減因?yàn)槌啾谑猩鐣?jīng)濟(jì)發(fā)展所帶來的污染物,大大改善陸水河和其他相關(guān)水體的水環(huán)境,對保持和維護(hù)其生態(tài)功能具有重要意義。本文以赤壁市城東污水處理廠工程為例展開研究,研究內(nèi)容包括污水處理廠水量水質(zhì)的分析與確定、工藝方案選擇與分析及設(shè)計參數(shù)優(yōu)化等。根據(jù)赤壁市河?xùn)|新區(qū)及光谷產(chǎn)業(yè)園的發(fā)展規(guī)劃,采用城市單位人口綜合用水量指標(biāo)法、分項(xiàng)用水量定額法、分項(xiàng)用地指標(biāo)法單三種方法對該區(qū)域內(nèi)給水量進(jìn)行了合理化預(yù)測,確定赤壁城東污水處理廠一期設(shè)計規(guī)模為3萬m3/d。參考類似的城市污水水質(zhì)指標(biāo)并結(jié)合企業(yè)水質(zhì)的調(diào)查情況和實(shí)測情況,確定設(shè)計進(jìn)水水質(zhì)為COD=300mg/L,BOD5=150mg/L,SS=180mg/L,TN=30mg/L,NH3-N=25mg/L,TP=3mg/L。出水水質(zhì)達(dá)到《城鎮(zhèn)污水處理廠污染物排放標(biāo)準(zhǔn)》(GB18918-2002)中的一級A標(biāo)準(zhǔn),出水排入赤馬港。結(jié)合赤壁市城東污水處理廠的實(shí)際情況及設(shè)計要求,經(jīng)過方案對比,污水處理工藝采用以改良A2/O+高密度沉淀池為主體的工藝。該工藝充分考慮赤壁市城東污水處理廠以生活污水為主的特點(diǎn),具有很好的針對性。污泥處理采用“污泥濃縮+化學(xué)調(diào)理+高壓隔膜壓濾機(jī)”工藝,確保污泥含水率不高于60%,為污泥深度脫水提供了有益的借鑒。
[Abstract]:Chibi City is located on both sides of the Lushui River, the north side of the beautiful water lake. The development of Chibi City can not be separated from land rivers and lakes. The Lushui Lake is a national key tourist scenic spot with an area of 58 square kilometers and a storage capacity of 750 million cubic meters. Therefore, it is the responsibility of the Chibi Municipal Government and the wish of the people of Chibi to protect them well. The construction of Chengdong sewage treatment Plant in Chibi City will reduce the pollutants brought by the social and economic development of Chibi City and greatly improve the water environment of land rivers and other related water bodies. It is of great significance to maintain and maintain its ecological function. This paper takes Chengdong sewage treatment plant in Chibi as an example to study, including the analysis and determination of water and quality of sewage treatment plant, the selection and analysis of process scheme and the optimization of design parameters, etc. According to the development plan of Hedong New District and Guanggu Industrial Park in Chibi City, the comprehensive water consumption index method, itemized water consumption quota method and itemized land use index method are adopted to rationally forecast the water supply in this area. It is determined that the first phase design scale of Chbi Chengdong sewage treatment Plant is 30,000 m3 / d. Referring to similar indexes of municipal wastewater quality and combining with the investigation and actual measurement of water quality in enterprises, it is determined that the designed influent water quality is 300 mg / L BOD5 / 150 mg / L SSN = 180 mg / L TNN 30 mg / L NH _ 3-N = 25 mg / L / TP3 mg 路L ~ (-1). The effluent quality is up to the first class A standard of the pollutant discharge standard of the Municipal sewage treatment Plant GB18918-2002, and the effluent is discharged into the Chema Port. Combined with the actual situation and design requirements of Chengdong sewage treatment Plant in Chibi City, through the comparison of schemes, the process of sewage treatment adopted the improved A _ 2 / O high-density sedimentation tank as the main process. This process fully takes into account the characteristics of Chengdong sewage treatment Plant in Chibi City, which is based on domestic sewage and has good pertinence. The sludge treatment adopts the process of "sludge concentration chemical conditioning high pressure membrane filter press" to ensure that the sludge moisture content is not higher than 60%, which provides a useful reference for the deep dewatering of sludge.
【學(xué)位授予單位】：青島理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：X703

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本文編號：1781590