【正文】 成都電子機(jī)械高等?？茖W(xué)校 畢 業(yè) 設(shè) 計 設(shè)計題目 ： 某汽車公司涂裝廢水處理 專 業(yè) ： 環(huán)境監(jiān)測與治理技術(shù) 班 級 ： 07472 班 學(xué) 號： 13號 姓 名 ： 柳元超 指導(dǎo)教師 ： 吳菊珍 時 間： 第 2 頁 共 57 頁 目錄 摘 要 ........................................................................................................................ 3 一、緒論 ........................................................................................................................ 5 汽車總述 .................................................................................................................. 5 汽車涂裝工藝簡述 .................................................................................................. 5 汽車涂裝廢水的處理簡述 ...................................................................................... 6 二、汽車涂裝工藝 ....................................................................................................... 7 １、漆前表面處理工藝 ................................................................................................ 7 ２、電泳涂裝工藝 ........................................................................................................ 8 ３．密封、車底涂料涂裝工藝（ PVC 涂裝線） ..................................................... 10 ４．中涂涂裝工藝 ...................................................................................................... 11 ５．面漆涂裝工藝 ...................................................................................................... 12 三 汽車防 腐 ............................................................................................................. 15 １ .影響車輛腐蝕的主要因素 ..................................................................................... 15 ２ .汽車防腐技術(shù) ......................................................................................................... 15 四 汽車涂裝廢水處理 ............................................................................................. 21 １、某汽車公司涂裝廢水來源和特點(diǎn) ...................................................................... 21 ２、廢水處理的方法和工藝選擇 .............................................................................. 22 ３ .汽車涂裝廢水處理工藝流程 ................................................................................ 31 汽車涂裝廢水的工藝的工藝流程 .............................................................................. 31 ４．廢水處理設(shè)計計算 .............................................................................................. 32 五 污水處理廠總體布置 ....................................................................................... 50 ....................................................................................... 50 ............................................................................................... 51 致謝 .............................................................................................................................. 52 第 3 頁 共 57 頁 摘 要 汽車工業(yè)是國民經(jīng)濟(jì)的 重要支柱產(chǎn)業(yè)，關(guān)系到國計民生和對外貿(mào)易，汽車工業(yè)中的汽車涂裝廢水涉及到的表面處理、磷化處理、電泳涂裝、噴漆等工藝其生產(chǎn)過程中產(chǎn)生大量的工業(yè)廢水中含有各類污染物，包括酸、堿、礦物油、防腐劑、涂料、漆料和各種的重金屬。這種工業(yè)廢水的污染程度和毒性危害是不容忽視的。為了防治對環(huán)境的污染，對汽車涂裝廢水進(jìn)行了處理設(shè)計。該設(shè)計將脫脂磷化廢水經(jīng)過破乳后去除一部分 COD 和油，再通過化學(xué)沉淀法使廢水中的磷成為不溶性的固體物沉淀下來，電泳噴漆廢水采用混凝沉淀法對懸浮物和一些膠體物進(jìn)行預(yù)處理，然后將污水進(jìn)行混合調(diào)節(jié)，經(jīng)過氣浮池 ，然后進(jìn)入 CASS 反應(yīng)池，除去大部分的有機(jī)物，經(jīng)過活性炭過濾達(dá)標(biāo)排放。在其中的污泥經(jīng)過脫泥間脫水呈泥餅外運(yùn)。利用物理，化學(xué)，生化處理法對廢水進(jìn)行處理，達(dá)到要求，減少起對環(huán)境的影響。此設(shè)計的廢水處理量達(dá)到了 200 hm/3 ， 出水水質(zhì)達(dá)《污水排放綜合標(biāo)準(zhǔn)》 GB189182021 一級 A 標(biāo)準(zhǔn)。 當(dāng)今世界都非常重視環(huán)境保護(hù)，為了能讓我們周圍的環(huán)境能夠變得美好，堅持可持續(xù)發(fā)展觀，我們必須對那些對環(huán)境造成危害的東西加以處理，盡量把污染控制到環(huán)境的所能承受的范圍內(nèi)，低于環(huán)境容量。 關(guān)鍵 詞 ： 汽車涂裝廢水；破乳； 化學(xué)沉淀； 混凝沉淀；氣?。? CASS 反應(yīng)池；過濾 第 4 頁 共 57 頁 Abstract The automobile industry is an important pillar of the national economy, industry, related to the people39。s livelihood and foreign trade, automobile industry, the car involved in the surface coating wastewater treatment, phosphate treatment, electrophoretic coating, painting and other craft of its production processes produce large amounts of industrial wastewater containing various pollutants, including acid, alkali, mineral oils, preservatives, coatings, paints and various heavy metals. This industrial wastewater pollution and toxic hazards can not be ignored. In order to bat environmental pollution, the automobile paint wastewater treatment design. The design will be skimmed after the removal of phosphate waste water through the emulsionbreaking part of the COD and oil,Remake by chemical precipitation of phosphorus in waste water to bee insoluble solids settle down, electrophoresis paint wastewater using coagulationsedimentation method, and some colloidal suspensions preprocessing, and then adjust the mix of sewage, after flotation tank, and then enter the CASS reactor, to remove most of the anic matter, through the activated carbon filter discharge standards. In which the removal of sludge through the mud cake between the dehydration was Sinotrans. The use of physical, chemical, biological and chemical treatment methods for wastewater treatment, meet the requirements to reduce the effect on the environment. The design of wastewater treatment capacity has reached 200, the effluent water quality, Comprehensive discharge standard GB189182021 Grade A standards. The world attach great importance to environmental protection, in order to make the environment around us can bee better, adhere to the sustainable development concept, we have those things that cause harm to the environment to be addressed, as far as possible pollution control to the environment can bear within less than the capacity of the environment. Key words: automobile paint wastewater。 demulsification。 chemical precipitation。 coagulation and sedimentation。 floatati