【正文】
靈活應(yīng)用所學(xué)到的PLC控制知識(shí),來(lái)完成SBR的整個(gè)過(guò)程。完成這個(gè)課題,需要對(duì)全球的污水處理狀況做一個(gè)大體了解,世界各國(guó)的污水處理工廠等是如何來(lái)進(jìn)行日常生活成產(chǎn)的污水處理的,對(duì)于污水處理系統(tǒng)做到心中有數(shù),成熟的污水處理系統(tǒng)有哪些,這些系統(tǒng)中又有哪些缺點(diǎn)和不成熟的地方??删幊绦蚩刂破?簡(jiǎn)稱PLC) 作為一種通用控制裝置,廣泛應(yīng)用于各類工業(yè)領(lǐng)域。(10)工藝流程簡(jiǎn)單、造價(jià)低。(7)反應(yīng)池內(nèi)存在DO、BOD5濃度梯度,有效控制活性污泥膨脹;而污泥膨脹問(wèn)題是其它活性污泥方法中很常見(jiàn)且很難控制的問(wèn)題之一;(2)在通常的條件下,該工藝可以不用添加化學(xué)藥劑而達(dá)到硝化、反硝化的效果;(3)SBR工藝通過(guò)缺氧—好氧過(guò)程交替進(jìn)行共同作用達(dá)到對(duì)污染物的去除,因此與常規(guī)活性污泥法等好氧處理工藝相比,具有電耗低的特點(diǎn);(4)SBR工藝系統(tǒng)的啟動(dòng)及生物馴化容易,并且耗時(shí)短;(5)運(yùn)行效果穩(wěn)定,污水在理想的靜止?fàn)顟B(tài)下沉淀,需要時(shí)間短、效率高,出水水質(zhì)好;可以說(shuō),污水處理行業(yè)迎來(lái)空前的發(fā)展機(jī)遇。2008年四季度新增的千億元中央投資中,投向節(jié)能減排和生態(tài)建設(shè)的資金達(dá)120億元。在這樣的背景下,污水處理行業(yè)成為新興產(chǎn)業(yè),目前與自來(lái)水生產(chǎn)、供水、排水、中水回用行業(yè)處于同等重要地位?! ≈袊?guó)水資源人均占有量少,空間分布不平衡。全球水資源狀況迅速惡化,“水危機(jī)”日趨嚴(yán)重。?。サ拿娣e為水所覆蓋,但淡水資源卻極其有限,人類真正能夠利用的是江河湖泊以及地下水中的一部分,%,而且分布不均。它正隨著計(jì)算機(jī)、通訊、網(wǎng)絡(luò)等技術(shù)的進(jìn)步全面迅速發(fā)展。隨著工業(yè)自動(dòng)化的普及與發(fā)展,要求有人家先進(jìn)、穩(wěn)定、可靠的監(jiān)控設(shè)備加入到控制系統(tǒng)中,以完成數(shù)據(jù)的采集以及設(shè)備的安全運(yùn)行。SBR工藝污水處理計(jì)算機(jī)監(jiān)控系統(tǒng)的核心是可編程序控制器(PLC)。摘 要序批式活性污泥法(Sequencing Batch Reactor),簡(jiǎn)稱SBR。是一種中小型的污水處理方法。采用PLC不僅能夠適應(yīng)水處理系統(tǒng)的工藝特點(diǎn),而且代表了現(xiàn)代工業(yè)的發(fā)展方向。作為當(dāng)今工廠企業(yè)重要的自動(dòng)化控制設(shè)備之一,可編程邏輯控制器(PLC)已經(jīng)被廣泛的用于現(xiàn)代工業(yè)控制系統(tǒng)中,尤其適用于邏輯、順序過(guò)程控制。關(guān)鍵詞 污水處理,序批式活性污泥法,SBR,可編程序控制器 ABSTRACTSequencing Batch Reactor, which is called the SBR law , is a kind of center and small sewage treatment method .The core of SBR craft sewage treatment puter supervisory system is the programmable foreword controller(PLC).Using PLC not only could adapt to the craft characteristic of the water disposal system, but also represents the modern industry developed direction. Along with the popularization and the development of industrial automation , in order to plete the data gathering and the safety running of the equipment, more advanced, stable and reliable monitoring equipments are required to join the control system. As one of the important automation control devices in nowadays factories, the programmable logical controller(PLC) has already been used widely in the modernindustry control system, especially for the logical, order process control, It is developing rapidly along withthe progress of the puter,munication , network and so on. Keywords Polluted water,processing,SBR,Programmable Controller 32 / 40目 錄前言 ......................................................................