本文關(guān)鍵詞：紡織印染廢水深度脫色處理工藝研究　出處：《西安建筑科技大學(xué)》2015年碩士論文　論文類型：學(xué)位論文

  更多相關(guān)文章： 印染廢水 深度脫色處理 混凝 臭氧氧化

【摘要】：我國是紡織印染業(yè)大國,作為我國主要的經(jīng)濟(jì)支柱,印染行業(yè)在推動我國經(jīng)濟(jì)發(fā)展的同時給我國的生態(tài)環(huán)境也帶來了嚴(yán)重的污染。隨著我國環(huán)保要求的日益嚴(yán)格和“水十條”的推進(jìn),原有的紡織印染廢水排放標(biāo)準(zhǔn)已無法滿足新的環(huán)保需求。其中印染廢水的深度脫色處理是該行業(yè)面臨的主要難題之一�；诖艘蕴岣呱热コ蕿槟康牡挠∪緩U水深度脫色處理工藝研究具有非常重要的現(xiàn)實(shí)意義。本課題就廣州佛山鑫龍污水處理廠二級出水的深度脫色處理開展系統(tǒng)研究,在對我國印染廢水處理現(xiàn)狀廣泛調(diào)查與分析的基礎(chǔ)上,分析了鑫龍污水處理廠進(jìn)出水水質(zhì);評價了該污水處理廠二級處理工藝的處理效果以及處理出水中有機(jī)物的理化特性,為研究路線的確定提供理論依據(jù);通過多種印染廢水深度脫色處理工藝的小型試驗(yàn),篩選出最佳深度脫色處理工藝;對最佳深度脫色處理工藝進(jìn)行了方案設(shè)計研究并分析其運(yùn)行費(fèi)用。研究結(jié)果表明,鑫龍污水處理廠二級出水的COD、BOD、SS等指標(biāo)基本達(dá)標(biāo),但色度遠(yuǎn)遠(yuǎn)超標(biāo),出水色度在80倍左右。通過對出水中有機(jī)物理化特性的分析可得,廢水生物處理中由微生物代謝產(chǎn)生的蛋白類、腐殖酸類大分子有機(jī)物為主要組成部分,其中COD和色度物質(zhì)在分子量大于100k區(qū)間的分別占到46%、44%�；诙壣锾幚沓鏊杏袡C(jī)物的理化特性分析,提出了以混凝為核心的深度脫色處理工藝,并優(yōu)化篩選了絮凝劑、助凝劑。分析評價了混凝工藝的處理功效,結(jié)果表明以PAC為絮凝劑(投加量為150mg/L),PAM為助凝劑(投加量為10mg/L)時,出水色度可由80降低至50。為了進(jìn)一步提高脫色效率,研究了6種以混凝為核心的二級或三級化學(xué)-物化組合處理工藝。結(jié)果表明臭氧預(yù)氧化與混凝組合工藝不僅具有顯著的脫色效果(色度可降低至20),還可減少混凝劑的投加量,大大降低了運(yùn)行成本。對臭氧預(yù)氧化-混凝工藝進(jìn)行了方案設(shè)計研究,對各處理單元進(jìn)行了初步設(shè)計、設(shè)備選型以及平面和高程布置,并分析計算了該深度脫色處理工藝的運(yùn)行成本,為鑫龍污水處理廠深度脫色處理工程的設(shè)計和建設(shè)提供了參考和依據(jù)。
[Abstract]:China is a large country in textile printing and dyeing industry, as the main economic pillar of our country. Printing and dyeing industry not only promotes the economic development of our country, but also brings serious pollution to the ecological environment of our country. The original discharge standard of textile printing and dyeing wastewater can no longer meet the new environmental protection requirements. The advanced decolorization of printing and dyeing wastewater is one of the main problems faced by the industry. Based on this, the printing and dyeing waste with the aim of increasing the removal rate of colority can not be satisfied. It is of great practical significance to study the process of deep decolorization of water. This paper has carried out a systematic study on the advanced decolorization of secondary effluent from Xinlong sewage treatment plant in Foshan, Guangzhou. Based on the extensive investigation and analysis of the present situation of printing and dyeing wastewater treatment in China, the water quality in and out of Xinlong sewage treatment Plant is analyzed. The treatment effect of the secondary treatment process and the physical and chemical properties of the organic matter in the wastewater treatment plant were evaluated, which provided the theoretical basis for the determination of the research route. The best advanced decolorization process was selected through a small scale experiment of various advanced decolorization processes for printing and dyeing wastewater. The optimal advanced decolorization process was designed and its operating cost was analyzed. The results showed that the COD- BODSS of the secondary effluent of Xinlong sewage treatment plant basically reached the standard. But the chroma is far beyond the standard, the chroma of effluent is about 80 times. Through the analysis of the physical and chemical properties of organic matter in the effluent, the protein produced by microbial metabolism in wastewater biological treatment can be obtained. Humic acid macromolecular organic matter is the main component of which COD and chromaticity substances account for 46% in the range of molecular weight > 100k respectively. Based on the analysis of physical and chemical properties of organic matter in secondary biological treatment, the advanced decolorization process with coagulation as the core was put forward, and the flocculant was optimized and screened. Coagulant aid. The treatment effect of coagulation process is analyzed and evaluated. The results show that when PAC is used as flocculant (dosage is 150 mg / L) as coagulant aid (dosage is 10 mg / L). The chroma of effluent can be reduced from 80 to 50. In order to further improve the decolorization efficiency. Six secondary or tertiary chemical-physicochemical processes with coagulation as the core were studied. The results showed that the combined process of ozone pre-oxidation and coagulation not only had significant decolorization effect (chroma can be reduced to 20). It can also reduce the dosage of coagulant and greatly reduce the running cost. The project design of ozone pre-oxidation-coagulation process has been carried out and the preliminary design of each treatment unit has been carried out. The operation cost of the advanced decolorization process is analyzed and calculated, which provides a reference and basis for the design and construction of the advanced decolorization project of Xinlong sewage treatment Plant.
【學(xué)位授予單位】：西安建筑科技大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：X791

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 溫貝貝;劉志剛;馬魯銘;;偶氮染料的厭氧-好氧生物降解過程和影響因素[J];四川環(huán)境;2013年02期

2 薛永杰;趙銳柏;袁偉光;;微電解—Fenton組合預(yù)處理難降解印染廢水[J];廣東化工;2013年06期

3 李昊;周律;李濤;邢麗貞;;臭氧氧化法深度處理印染廢水生化處理出水[J];化工環(huán)保;2012年01期

4 代莎莎;王西云;;臭氧高級氧化技術(shù)預(yù)處理染料廢水的試驗(yàn)研究[J];能源環(huán)境保護(hù);2011年02期

5 王成軍;;印染廢水回用綜述[J];廣東化工;2010年06期

6 任松潔;叢緯;張國亮;馬青蘭;呂伯f;;印染工業(yè)廢水處理與回用技術(shù)的研究[J];水處理技術(shù);2009年08期

7 辛玉琴;張宏新;;印染行業(yè)廢水處理存在問題及對策[J];河南化工;2009年03期

8 余欣;吳贊敏;;國內(nèi)外印染廢水處理情況對比研究[J];天津紡織科技;2008年04期

9 許華誠;;印染廢水處理技術(shù)難點(diǎn)淺析[J];中國環(huán)保產(chǎn)業(yè);2008年09期

10 陳曉維;汪瑛;;印染廢水處理工藝研究及實(shí)例[J];江西化工;2008年02期

，

本文編號：1355761