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摘要:水資源短缺是21世紀(jì)人類(lèi)面臨的最為嚴(yán)峻的資源問(wèn)題之一，污水回用經(jīng)常被作為首選方案，很重要的原因在于水源就近可得，水量穩(wěn)定，不會(huì)發(fā)生與鄰相爭(zhēng)。污水回用既可以有效地節(jié)約和利用有限的和寶貴的淡水資源，又可以減少污水或廢水的排放量，減輕水環(huán)境的污染，還可以緩解城市排水管道的超負(fù)荷現(xiàn)象，具有明顯的社會(huì)效益、環(huán)境效益和經(jīng)濟(jì)效益。 本課題是根據(jù)“連云港市建設(shè)規(guī)劃”要求而建的排水工程設(shè)計(jì)，城區(qū)內(nèi)有4家企業(yè)，其排放廢水水質(zhì)達(dá)到了《污水排入城市下水道水質(zhì)標(biāo)準(zhǔn)》；以及學(xué)校1所。城區(qū)內(nèi)無(wú)排水系統(tǒng)、無(wú)污水處理廠(chǎng)。要求新建污水處理廠(chǎng)出水水質(zhì)應(yīng)滿(mǎn)足《城鎮(zhèn)污水處理廠(chǎng)污染物排放標(biāo)準(zhǔn)》（GB18918-2002）中的一級(jí)A標(biāo)準(zhǔn)。城市污水經(jīng)處理后，60%就近排入水體，40%作為城市景觀(guān)環(huán)境用水。 根據(jù)本區(qū)的地形，本設(shè)計(jì)采用正交式污水排水系統(tǒng)，雨水就近排入水體。完全分流制排水系統(tǒng)。 根據(jù)城市所處的地理位置和污水廠(chǎng)的規(guī)模，并結(jié)合考慮需脫氮除磷的要求，城市污水處理廠(chǎng)設(shè)計(jì)采用卡魯塞爾氧化溝工藝。該工藝污水處理流程為：從粗格柵到泵房，進(jìn)入細(xì)格柵，平流沉砂池，氧化溝，輻流式二沉池，消毒池，中水處理，出水排放。污泥處理流程為：從二沉池和初沉池排除的剩進(jìn)余污泥首先入污泥提升泵房，進(jìn)入污泥濃縮池，貯泥池，污泥消化池，污泥脫水間，泥餅外運(yùn)。深度處理在投加混凝劑后采用普通快濾池過(guò)濾加氯消毒后用于中水回用。 關(guān)鍵詞：污水回用 污泥濃縮 中水處理 深度處理 快濾池
Abstract:The shortage of water resources is one of the most serious problems of resources for the twenty-first Century human faces, sewage reuse is often as preferred, very important reason lies in the water is available on site, water stability, and strive not o. With both can effectively save and use the limited and precious fresh water resource recycling sewage, and can reduce emissions of sewage or waste water, reduce water pollution, overload can also ease the city drainage pipeline, and has obvious social benefit, environmental benefit and economic benefit. This topic is the drainage projects according to the requirements of "Lianyungang City construction planning" design, city of 4 enterprises, the discharge of wastewater quality reached "sewage discharged into the city sewer water quality standards"; and the 1 schools. City without drainage system, no sewage treatment plant. New sewage treatment plant effluent quality should meet the "urban sewage treatment plant pollutant discharge standard" (GB18918-2002) in an A standard. City sewage after treatment, 60% into the nearby water, 40% as the city landscape water. According to the topography, the design of orthogonal type sewage drainage system, rain water into the nearby water. Completely separate drainage system. According to the city's geographical location and scale of sewage treatment plant, combining with the demand for nitrogen and phosphorus removal requirements, city sewage treatment plant design uses the Carrousel oxidation ditch process. The technology of wastewater treatment process for: from the coarse grid to the pump house, into the fine grid, advection sedimentation tank, oxidation ditch, radial flow two sedimentation tank, disinfection pool, water treatment, water discharge. The sludge treatment process for: from two sedimentation tank and the primary settling tank to exclude left into excess sludge first into the sludge pumping station, into the sludge thickening tank, sludge storage tank, sludge digestion tank, sludge dewatering room, sludge cake sinotrans. Deep treatment using conventional rapid filter filtration chlorination in after adding coagulant for water reuse. Keywords:Wastewater Resue Sludge Thicking Water Treatment Advanced Treatmeng Rapid Filter |
