需要金幣： 1000 個金幣 |
資料包括：完整論文 |  |
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| 轉換比率：金額 X 10=金幣數(shù)量， 例100元=1000金幣 | 論文字數(shù)：32074 |  | |
| 折扣與優(yōu)惠：團購最低可5折優(yōu)惠 - 了解詳情 | 論文格式：Word格式(*.doc) |  |
摘要:本設計是關于D市B區(qū)的排水工程設計，其包括兩個設計內容：排水系統(tǒng)設計與污水處理廠設計。根據(jù)畢業(yè)設計的原始資料及設計要求，排水系統(tǒng)需按照完全分流制進行設計，污水處理廠出水則需脫氮除磷，出水水質達到一級A標準，并且污水經處理后30%作為市政雜用水。 排水系統(tǒng)中的雨、污管渠分別進行布置。污水管道采用平行式布置方式，將該排水區(qū)域分為三塊，并對排水干管進行了設計流量計算與水力計算。雨水管道進行匯水面積的劃分后，按照雨水就近排放入河的原則布置雨水管道，對管道進行設計流量計算和水力計算。由于該區(qū)域有兩條河流貫通城市，故當有排水管道穿過時，管道需采取倒虹管方式過河。 污水管網收集的水量全部送至污水處理廠，一級處理中，污水直接進入間隙為20mm的機械細格柵進行處理，以免對后續(xù)處理單元或工藝管線造成損害。格柵后為兩座四格平流式沉砂池，用以去除密度較大的無機顆粒，提高污泥有機組分的含率。沉砂池出來后污水進入長寬均為56.3m的調節(jié)池進行流量調節(jié)。污水生物處理階段采用的是SBR工藝，該工藝綜合了活性污泥法連續(xù)推流式曝氣池工藝的優(yōu)點，采用多點進水方式，進水時間1.5h，曝氣時間2.6h，沉淀時間1.4h工藝流程簡單，運行靈活性強，具有穩(wěn)定除磷脫氮的效果，且不需設初沉池和二沉池，大大減少了占地面積，反應池體積78746m3。SBR反應池的出水直接進入臭氧消毒階段，出水達標排放，其中30%出水進入普通快濾池過濾后作為市政回用水。SBR反應池的剩余污泥經污泥提升泵站提升至污泥濃縮池，然后經帶式壓濾機后進行污泥肥化處理。 在完成污水和污泥構筑物的設計計算后，綜合考慮各方面因素對污水處理廠進行平面布置，對連接各構筑物的管渠進行選徑、確定流速及水利坡降，然后進行水力損失計算，根據(jù)水力損失計算對污水和污泥高程進行了計算和布置。 關鍵詞 污水管網；雨水管網；SBR；深度處理；污泥堆肥
Abstract:This design is about D municipal drainage engineering design B area, the two design content includes: the drainage system design and the design of sewage treatment plant. According to the original data and the design requirements of graduation design, the drainage system should be carried out in accordance with the completely separate system design, sewage treatment plant effluent, denitrification and phosphorus removal, effluent water quality reach the standard level A, and 30% water after being treated as A municipal miscellaneous water. Drainage system in the rain, sewage pipe drainage arrangement, respectively. Sewage pipes adopts parallel arrangement, the drainage area can be divided into three pieces, and probes into the main drain design flow calculation and hydraulic calculation. Rainwater catchment area after the division of pipeline, according to the principle of rainwater discharge into the river to the nearest rainwater pipeline, pipeline for the design discharge calculation and hydraulic calculation. Because there are two rivers in the region through the city, so when have drainage pipe through the pipeline needs to take the way across the river inverted siphon pipe. Sewage pipe network to collect all sent to the sewage treatment plant, water in the primary treatment of sewage directly into the gap of 20 mm machine fine grille for processing, in order to avoid damage to subsequent processing unit or process line. Grid after two to four flat flow grit chamber, used to remove larger inorganic particle density, increase the rate of sludge organic components. Grit chamber out sewage into the width are 56.3 m after adjusting pool for flow control. Is SBR technology on wastewater biological treatment stage, the process combines continuous push flow aeration tank by activated sludge process, the advantages of using more water, feed time of 1.5 h, aeration time 2.6 h, precipitation time 1.4 h technological process is simple, operation flexibility is strong, has the stable phosphorus removal effect of nitrogen, and don't need to be at the beginning of a pond, and the second pond, greatly reduces the area of reaction tank volume of 78746 m3. SBR reaction pool ozone disinfection water directly into the stage of the effluent discharging standard, 30% of them enter the ordinary fast filtration process as a municipal water back into the water. The sludge SBR reaction pool of surplus sludge pumping station up to the sludge concentration pool, then after the belt filter press sludge fertilizer treatment. After finished the design of the sewage and sludge structure calculation, considering the factors of sewage treatment plant layout, various structures of the connection of tube drainage to choose size, determine the flow velocity and hydraulic gradient, and hydraulic loss calculation, according to the hydraulic loss calculation of sewage and sludge elevation calculation and layout. Keywords sewage pipe network Rain water pipe network SBR Deep treatment Sewage sludge composting |
