1.1.2 Principle of preparationRely on science and technology, strengthen management, optimize network and perform construction operation in a balanced way.
1.1.3 編制指導思想嚴格按照IS09001標準要求，與國際慣例接軌，參照了菲迪克條款對承建商的有關要求，力爭使該施工組織設計能全面、系統、科學、有效地指導該工程的安裝及調試直至試運行符合施工驗收規範和業主要求，從而實現設計意圖。
1.1.3 Guideline of preparationThe document has been prepared in strict accordance with the requirement of ISO9001 and in conformity with the international practice. The requirements for contractors in FIDIC terms have been referred to enable the construction organization design to guide the installation and commissioning operations of the work in a complete, systematic, scientific and efficient way until its trial operation meets the construction work acceptance specification and the owner’s requirements and realize the design intent.
1.1.4編制目的確保某汙水處理廠安裝工程的施工進度、施工質量、施工安全、確保文明施工、環境保護、員工健康、實現業主願望，確保用戶滿意。
1.1.4 Purpose of preparationEnsure the work progress of the project, quality of construction operation, safety, orderliness in operation, environment protection, workers’ physical health to fulfill the owner’s will and make the user satisfied.
1.2工程概況重慶市某汙水處理廠二期工程是重慶市利用日本政府貸款建設的主城排水工程之壹。本工程的實施將為重慶主城區的可持續發展創造安全的環境。二期工程是在原壹期工程的基礎上，完成壹級處理、二級生物處理、消毒及汙泥處理工程，使汙水處理達到國家壹級排放標準後，排入長江。重慶市某汙水處理廠用來處理雨汙合流的城市汙水，二期工程設計旱季處理汙水量為60萬m3/d，雨季處理汙水量為135萬m3/d，二級生物處理過程。遠期汙水廠規模為處理汙水量80萬m3/d，雨季處理汙水量165萬m3/d，二級生物處理過程。重慶市某汙水處理廠二期工程由上海某設計研究院設計。工期要求：合同生效後360天內（包括安裝和完成預調試）。
1.2 Project informationThe second-phase work of Chongqing Jiguanshi Sewage Treatment Plant is one of the drainage works to be built in the metropolitan area using the loan provided by the Japanese government. The building of the work will help create a safe environment for the sustainable development of the metropolitan area of Chongqing.The second-phase work is based on the first-phase work by completing the works for primary-level treatment and secondary biological treatment, sterilization and sludge disposal so that the treated sewage will reach the state-designated discharge level I before being let into the Yangtze River.Chongqing Jiguanshi Sewage Treatment Plant is used to purify urban sewage made up of rainwater and wastewater. The second-phase work is designed with an output capacity of 600,000 m3/d in dry seasons and 1,350,000 m3/d in rainy seasons. For the second-level biological treatment process, the far-future output capacity of the plant is 800,000 m3/d and the rainy season capacity of the plant is 1,650,000 m3/d.The second-phase work of the sewage treatment plant is designed by Shanghai Public utility works Design and Research Institute.Required construction period: within 360 days after the contact takes effect (including installation and preliminary commissioning).
1.3 工程特點
1.3 Features of the work
1.3.1該工程采取設備供貨、安裝及調試總承包方式招商，對投標人要求嚴，承建商負責按設計要求提供設備及各個單項設備的性能保證的供貨，安裝及試運行。同時負責汙水處理廠出水水質達到國家壹級排放標準，如果達不到所保證的性能，無論是在測試期還是在20個月的運行監理期間，承建商應對設備作必要的改進或更換以達到所保證的性能。
1.3.1 The work is to be put to bid in the form of general contraction of equipment supply, installation and commissioning. It therefore has stringent requirement for the bidder. The constructor is responsible for providing equipment as well as the supply, installation and trial operation of the individual equipment according to the design requirement. He is also responsible for ensuring the outlet water of the plan reaches the state level I standard. If the constructor fails to reach the promised level of performance, he shall make necessary improvement of the equipment or replace it either in the testing period or the 20-month supervised operation.
1.3.2安裝技術要求高工藝設備安裝技術要求高。該工程將大量采用國內外先進設備及儀器儀表，安裝精度的控制對調試致關重要，整個汙水處理廠安裝調試合格後將實現計算機管理。
1.3.2 Stringent requirements for installationThe requirement is fairly stringent for the technical level of installation. A great number of domestically or internationally advanced equipment and instrumentation will be used and the control of installation accuracy is of vital importance to the commissioning operation. The management of the whole treatment plant will be computerized after installation and commissioning.
1.3.3自動化程度高本工程采用PLC集中與分散相接合的控制方式。對液位/界面、溫度、壓力、溶解氧、汙泥濃度、酸堿度、流量、調節閥開啟度、有害氣體濃度、電壓、電流、功率等實施測量控制，工藝設置CRT投影儀銀幕進行顯示。
1.3.3 High degree of automationThe work utilizes the PLC integration and disintegration combination control to measure and control the level/interface, temperature, pressure, dissolved oxygen, concentration of sludge, alkalinity and acidity, flow rate, opening of control valves, concentration of poisonous gasses, voltage, current, power, etc. All process parameters will be displayed on CRT projector screens.
1.3.4交叉作業多地下管網、閥井、工藝設備預留孔與土建必須配合進行，存在大量交叉作業。
1.3.4 Many cross-operationsConstruction of provided holes for underground pipeline networks, valve shafts and operating equipment must be done in conjunction with the public utility works. Therefore a large amount of cross-operations will be involved.
1.3.5露天作業多露天作業受氣候影響大，在施工中條件成熟的要抓緊時間實施，雨天作業要有相應的技術措施。
1.3.5 Many open-air operationsSince open-air operation will be greatly affected by weather. Operation should be carried out as quickly as possible if the weather condition permits and technical measures should be taken during performing construction in rainy weather.
1.4工藝簡介采用A/A/O處理工藝重慶市某汙水處理廠二期處理程度為壹級處理、二級生物處理、消毒及汙泥處理，執行中華人民***和國國家標準GB8978—1996《汙水綜合排放標準》中的壹級標準，即：BOD5≤20mg/1，SS≤20mg/1，CODcr≤60mg/1，NH3-N≤15mg/1，TP≤0.5mg/1。該汙水處理廠采用A/A/O生化處理工藝。它是在A/O工藝基礎上增加了壹個缺氧區，具有同步脫氮除磷的功能。A/A/O工藝處理汙水首先進入厭氧區，兼性厭氧發酵細菌將汙水中可生物降解的有機物轉化為VFA（揮發性脂肪酸類）這類低分子發酵中間產物。而聚磷菌可將其體內存儲的聚磷酸鹽分解，所釋放的能量可供好氧的聚磷菌在厭氧環境下維持生存，另壹部分能量還可供聚磷菌主動吸收環境中的VFA類低分子有機物，並以PHB（聚羥β丁酸）的形式在其體內儲存起來。隨後汙水進入缺氧區，反硝化菌就利用好氧區回流混合液帶來的硝酸鹽，以及汙水中可生物降解有機物作碳源進行反硝化，達到同時降低BOD5與脫氮的目的。接著汙水進入曝氣的好氧區，聚磷菌在吸收、利用汙水中殘剩的可生物降解有機物的同時，主要是通過分解體內儲存的PHB釋放能量來維持其生長繁殖。同時過量的攝取周圍環境中的溶解磷，並以聚磷的形式在體內儲積起來，使出水中溶解磷濃度達到最低。而有機物經厭氧區、缺氧區分別被聚磷和反硝化細菌利用後，到達好氧區時濃度已相當低，這有利於自養型硝化菌的生長繁殖，並通過硝化作用將氨氮轉化為硝酸鹽。非除磷的好氧性異養菌雖然也能存在，但他在厭氧區中受到嚴重的壓抑，在好氧區又得不到充足的營養，因此在與其他生理類群的微生物競爭中處於相對劣勢。排放的剩余汙泥中，由於含有大量能超量儲積聚磷的聚磷菌，汙泥含磷量可以達到6%（幹重）以上。從以上分析可以看出A/A/O工藝具有同步脫氮除磷的功能。A/A/O工藝的優點是厭氧、缺氧、好氧交替運行，可以達到同時去除有機物、脫氮、除磷的目的，而且這種運行狀況絲狀菌不宜生長繁殖，基本不存在汙泥膨脹問題。A/A/O工藝流程簡單，總水力停留時間少於其他同類工藝，並且不需外加碳源，缺氧、缺氧段只進行緩速攪拌，運行費用低。雨、汙水經過上述處理合格，符合國家排放標準的汙水直接排入長江。
1.4 Brief information on processes usedA/AO biological treatment processThe secondary-phase of Chongqing Jiguanshi Treatment Plant utilizes the processes of secondary-level treatment, secondary-level biological treatment, sterilization and sludge disposal. The level I criteria of the Chinese National Standard GB8978-1996: Comprehensive Sewage Discharge Standard, i.e. BOD5≤20mg/1, SS≤20mg/1, CODcr≤60mg/1, NH3-N≤15mg/1, TP≤0.5mg/1.The treatment plant uses the A/AO biological treatment process, which is based on the A/O process with an anaerobic area added to it. It has the simultaneous dehydrogening and desulphoring function.In the A/A/O process, the sewage water is first let into the anaerobic area where the faculiative anaerobic fermenting bacteria convert the biologically reducible organic substances in the sewage water into low-molecule intermediate products such as VPA (volatile fatty acid). The phosphor-gathering bacteria on the other hand is able to discompose the polyphosphates stored in their bodies. The energy thus released may keep the aerobic polyphosphor bacteria alive in the anaerobic environment. The other part of the energy is then used by the polyphosphor bacteria for actively absorbing the VPA type low-molecule organic substances in the environment and store then in their body in the form of PRB. Then the sewage water is let into the anaerobic area and the denitrificating bacteria make use of the nitrate brought by the back-flowing mixture liquid in the aerobic area and the biologically reducible organic substances in the sewage water as the source of carbon for denitrification so as to serve the purpose of reducing BOD1 ad denitrogening. Then the sewage water enters the aerating aerobic area and the polyphosphor bacteria, while making use of the remaining biologically reducible organic substances in the sewage water, keep growing and reproducing by mainly decomposing the PRB stored in their bodies to release energy and at the same time get dissolved phosphor from the surrounding environment and store them in their bodies in the form of polyphosphor so that the concentration of dissolved phosphor in the outlet water is reduced to the minimum. The organic substances, after being used by the polyphosphoring and denitriding bacteria in the aerobic and anaerobic areas, are fairly low in content, which is good for the reproduction of the self-supporting nitrifying bacteria and the ammonia and nitrogen are converted into nitrate through the nitrifying effect. Though the non-dephosphoring aerobic heterotrophic bacteria may exist, they are in a disadvantaged position in their competition with other microbes because they are severely suppressed in the amoebic area and unable to get sufficient nutrients in the aerobic area. In the remaining sludge drained, the content of phosphor may be more than 6% (dry weight) due to the presence of a great number of polyphosphor bacteria. The above analysis shows that the A/A/O process has the synchronous denitrgening and dephosphoring function.The A/A/O process has the advantage of alternating actions of anaerobic, oxygen deficiency and aerobic. This may serve the purpose of simultaneously removing organic substances, denitrogening and dephosphoring. Furthermore, this operating condition makes it difficult for the filamentous bacteria to grow and reproduce, eliminating the problem of sludge expansion. The A/A/O process is simple and the total dwelling time of hydro-force is shorter than that of other processes of similar type. No additional carbon source will be needed and only slow agitation is required during the hydrogen deficiency period, thus resulting in a low operating cost.Rainwater and sewage water through the above treatment conforms to the relevant national standard in quality and may be directly let into the Yangtze River.
希望對妳有幫助