發(fā)布時(shí)間：2018-06-11 23:35

  本文選題：印染廢水 + 三維熒光光譜�。� 參考：《西南科技大學(xué)》2015年碩士論文

【摘要】：隨著我國經(jīng)濟(jì)的快速發(fā)展,印染行業(yè)的企業(yè)規(guī)模也越來越大,而印染行業(yè)是典型的高耗水、高耗能和高污染行業(yè)。印染廢水是我國水量最大的工業(yè)廢水之一,色度大、有機(jī)物含量高、成分復(fù)雜,尤其所含的致畸、致癌物較多,屬于難生物降解的有毒廢水。我國印染企業(yè)偷排時(shí)常造成嚴(yán)重的水體污染,對(duì)水環(huán)境安全造成了嚴(yán)重的威脅。三維熒光光譜法因?yàn)榫哂徐`敏度高,檢測速度快,可以清晰展現(xiàn)水中有機(jī)物的組成,二次污染少等諸多優(yōu)點(diǎn)而被越來越多的應(yīng)用于水體及污水水質(zhì)監(jiān)測。本文選取我國南方某城市印染企業(yè)較多的區(qū)域的三家規(guī)模不同,處理不同印染廢水的污水處理廠的進(jìn)水水樣作為研究對(duì)象,來研究印染廢水的三維熒光特征。結(jié)果表明,所有的印染廢水的三維熒光特征存在明顯的相似性,都含有280/310nm和230/340nm的熒光峰,但是不同污水處理廠水樣的熒光強(qiáng)度值有所差異,A廠熒光強(qiáng)度最大,B、C兩廠較為接近。不同污水處理廠兩熒光峰熒光強(qiáng)度的比值差異也較大,A廠為0.62~0.73,B廠為0.58~0.66,C廠為0.41~0.47,不同的熒光峰強(qiáng)度比值也說明三廠廢水中有機(jī)物含量的差異。運(yùn)用圖譜比對(duì)的方法,對(duì)印染廢水中主要的熒光污染物進(jìn)行排查,發(fā)現(xiàn)熒光物質(zhì)主要來自于印染工藝中大量使用的染料。本文還對(duì)三廠印染廢水三維熒光特征與水質(zhì)常規(guī)監(jiān)測參數(shù)COD、TN和氨氮的聯(lián)系進(jìn)行了研究。結(jié)果表明,A、C兩廠的熒光峰強(qiáng)度與常規(guī)水質(zhì)參數(shù)之間的相關(guān)系數(shù)較小,介于0.0034~0.1903之間,關(guān)聯(lián)性小;而B廠的熒光峰強(qiáng)度與COD、TN和氨氮具有明顯的正相關(guān)性,相關(guān)系數(shù)介于0.8002~0.9287之間。說明不同生產(chǎn)原料、生產(chǎn)工藝所產(chǎn)生的印染廢水中,單個(gè)常規(guī)的水質(zhì)監(jiān)測參數(shù)與熒光峰的熒光強(qiáng)度關(guān)聯(lián)性不具有明顯統(tǒng)一特征,相關(guān)系數(shù)的大小與生產(chǎn)工藝有關(guān)。采用數(shù)學(xué)方法將印染廢水的水質(zhì)常規(guī)參數(shù)COD、TN和氨氮與熒光強(qiáng)度在同一坐標(biāo)圖中做線性擬合時(shí),不同采樣點(diǎn)的水樣分別具有向某一點(diǎn)集中的趨勢,在坐標(biāo)空間中分隔明顯,從而為判斷印染廢水來源提供數(shù)據(jù)依據(jù)。本研究表明印染廢水具有明顯的獨(dú)特的三維熒光特征,且信號(hào)穩(wěn)定,可以作為印染廢水預(yù)警偷排溯源的依據(jù)。
[Abstract]:With the rapid development of economy in our country, the scale of printing and dyeing industry is becoming larger and larger, and the printing and dyeing industry is typical of high water consumption, high energy consumption and high pollution. Printing and dyeing wastewater is one of the industrial wastewater with the largest amount of water in our country. It has a high chroma, a high content of organic matter and complex composition. Especially, it contains teratogenicity and many carcinogens, so it belongs to the toxic wastewater which is difficult to biodegrade. Printing and dyeing enterprises in our country often cause serious water pollution and serious threat to water environment safety. Because of its high sensitivity, high detection speed, can clearly show the composition of organic matter in water, less secondary pollution and many other advantages, it has been more and more used in monitoring water and sewage water quality. In this paper, three different sizes of printing and dyeing plants in southern China were selected to study the three dimensional fluorescence characteristics of printing and dyeing wastewater from wastewater treatment plants with different printing and dyeing wastewater. The results showed that there was obvious similarity in the three dimensional fluorescence characteristics of all printing and dyeing wastewater, all of which contained the fluorescence peaks of 280/310nm and 230/340nm. However, the fluorescence intensity values of water samples from different wastewater treatment plants were different. The maximum fluorescence intensity of plant A was similar to that of the two plants. The ratio of fluorescence intensity of two fluorescence peaks in different wastewater treatment plants is different. The ratio of fluorescence intensity of two fluorescence peaks in plant A is 0.62t0. 73nb, and it is 0.580.666C, which is 0.41 / 0.47.The difference of fluorescence peak intensity ratio also indicates the difference of organic matter content in wastewater of the third plant. The main fluorescent pollutants in printing and dyeing wastewater were investigated by using the method of chromatogram comparison. It was found that the fluorescent substances mainly come from the dyes used in the printing and dyeing process. The relationship between the three dimensional fluorescence characteristics of printing and dyeing wastewater and the parameters of routine monitoring of water quality, CODN and ammonia nitrogen, was also studied in this paper. The results showed that the correlation coefficient between fluorescence peak intensity and conventional water quality parameters was small, ranging from 0.0034 to 0.1903, and there was a significant positive correlation between fluorescence peak intensity and CODN TN and ammonia nitrogen in plant B. the correlation coefficient was between 0.800 2 and 0.9287. It shows that in the printing and dyeing wastewater produced by different raw materials and production processes, the correlation between the fluorescence intensity of the fluorescence peak and a single conventional water quality monitoring parameter is not obvious uniform, and the magnitude of the correlation coefficient is related to the production process. When the conventional parameters CODN, NH3-N and fluorescence intensity of printing and dyeing wastewater are fitted linearly in the same coordinate map by mathematical method, the water samples of different sampling points have the tendency of concentrating to a certain point, and are separated obviously in the coordinate space. So as to judge the source of printing and dyeing wastewater data basis. This study shows that the printing and dyeing wastewater has a unique three-dimensional fluorescence characteristics and the signal is stable. It can be used as a basis for the early warning and tracing of printing and dyeing wastewater.
【學(xué)位授予單位】：西南科技大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：X791

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本文編號(hào)：2007172