本文選題：印染綜合廢水 + 深度處理��； 參考：《華北水利水電大學(xué)》2017年碩士論文

【摘要】：紡織印染企業(yè)屬于高耗水、高污染企業(yè),企業(yè)多沿江(河)分布,對(duì)流域水污染物排放貢獻(xiàn)率大。自《紡織染整工業(yè)水污染物排放標(biāo)準(zhǔn)》(GB4287-2012)頒布實(shí)施以來(lái),為響應(yīng)國(guó)家完成“十二五”污染減排任務(wù)、減輕重點(diǎn)流域的污染負(fù)荷,必須對(duì)紡織染整綜合廢水進(jìn)行深度處理,以進(jìn)一步的去除廢水中的污染物質(zhì)來(lái)滿(mǎn)足排放標(biāo)準(zhǔn)和削減重點(diǎn)流域的污染負(fù)荷的要求。本課題的中試研究在浙江省某城市的紡織印染工業(yè)園區(qū)內(nèi)的大型污水處理廠進(jìn)行,以高效澄清池出水作為中試的研究對(duì)象。在全面地綜述了印染廢水的深度處理方法、臭氧催化氧化影響因素、催化臭氧氧化的催化劑類(lèi)型、臭氧系統(tǒng)以及臭氧催化氧化反應(yīng)裝置的結(jié)構(gòu)基礎(chǔ)上,提出了采用金屬離子負(fù)載型催化劑催化臭氧氧化的工藝作為紡織染整綜合廢水的深度處理工藝。通過(guò)污水處理廠實(shí)驗(yàn)室小試研究了影響臭氧催化氧化處理印染廢水的因素,比如:臭氧投加量、反應(yīng)時(shí)間(HRT)、pH等因素;通過(guò)設(shè)計(jì)正交實(shí)驗(yàn)并對(duì)正交實(shí)驗(yàn)結(jié)果進(jìn)行直觀分析,確定出影響臭氧催化氧化因素的主次順序以及最優(yōu)的實(shí)驗(yàn)室臭氧催化氧化條件;在經(jīng)過(guò)最優(yōu)條件下的小試實(shí)驗(yàn)驗(yàn)證之后,得出了臭氧催化氧化最佳反應(yīng)條件;實(shí)驗(yàn)室小試表明催化臭氧氧化的最佳反應(yīng)條件是:臭氧投加量為145mg/L、反應(yīng)時(shí)間為100min、pH為6.0。在最佳反應(yīng)條件下,臭氧催化氧化工藝對(duì)COD的去除率為67%,出水COD50mg/L。在中試實(shí)驗(yàn)期間,研究了臭氧催化氧化中試裝置處理紡織染整綜合廢水使廢水COD降至50mg/L以下的可行性和穩(wěn)定性以及最佳工況;除此之外,還研究了臭氧催化氧化對(duì)色度、氨氮等指標(biāo)的去除情況以及廢水的可生化性改善情況。最后還對(duì)臭氧催化氧化處理印染廢水的運(yùn)行成本進(jìn)行了計(jì)算。在中試實(shí)驗(yàn)過(guò)程中,結(jié)合小試實(shí)驗(yàn)的最佳反應(yīng)條件以及高效澄清池出水的實(shí)際水質(zhì)特點(diǎn),在不調(diào)節(jié)進(jìn)入中試裝置的廢水pH、溫度的情況下,通過(guò)不斷調(diào)試確定臭氧催化氧化中試的最佳反應(yīng)條件為:臭氧投加量為150mg/L、水力停留時(shí)間為100min;臭氧催化氧化中試裝置在最佳反應(yīng)條件下,可以長(zhǎng)時(shí)間并且穩(wěn)定地實(shí)現(xiàn)出水COD"f50m g/L,色度"f30倍,滿(mǎn)足《城鎮(zhèn)污水處理廠污染物排放標(biāo)準(zhǔn)》(GB18918-2002)中的一級(jí)A標(biāo)準(zhǔn);COD去除率為65%左右,色度去除率為70%左右,處理成本為每噸水2.6元。除此之外,高效澄清池出水經(jīng)過(guò)臭氧催化氧化中試裝置處理之后的出水可生化性改善程度小,仍然小于0.1;出水氨氮濃度基本都在4.2mg/L以下,去除率為10%左右。臭氧催化氧化中試研究成果為紡織染整綜合廢水深度處理提供了可供選用的技術(shù)以及設(shè)計(jì)參數(shù)。
[Abstract]:Textile printing and dyeing enterprises belong to high water consumption and high pollution enterprises. Since the promulgation and implementation of GB4287-2012, in response to the national task of reducing pollution in the 12th Five-Year Plan, it is necessary to carry out advanced treatment of textile dyeing and finishing wastewater in order to reduce the pollution load in key watersheds. To further remove pollutants from wastewater to meet the discharge standards and reduce the pollution load in key watersheds. The pilot study was carried out in a large wastewater treatment plant in a textile printing and dyeing industrial park in a city of Zhejiang Province. The effluent from an efficient clarifier was taken as the pilot study object. The advanced treatment methods of printing and dyeing wastewater, the influencing factors of ozone catalytic oxidation, the type of catalyst for catalytic ozone oxidation, the ozone system and the structure of ozone catalytic oxidation reactor are summarized. An advanced treatment process of textile dyeing and finishing wastewater by using metal ion supported catalyst to catalyze ozone oxidation was put forward. The factors affecting the treatment of printing and dyeing wastewater by ozone catalytic oxidation, such as ozone dosage, reaction time, HRT pH and so on, were studied in the laboratory of sewage treatment plant, the orthogonal experiment was designed and the results of orthogonal experiment were analyzed intuitively. The primary and secondary order of the factors affecting the catalytic oxidation of ozone and the optimal conditions for the catalytic oxidation of ozone in the laboratory were determined, and the optimum reaction conditions of catalytic oxidation of ozone were obtained after the experimental verification under the optimal conditions. The experimental results show that the optimum reaction conditions for catalytic ozonation are as follows: the dosage of ozone is 145 mg / L, the reaction time is 100 min and pH is 6.0. Under the optimum reaction conditions, the removal rate of COD by ozone catalytic oxidation process was 67%, and the effluent COD _ (50 mg / L) 路L ~ (-1). During the pilot experiment, the feasibility, stability and optimum conditions of treating textile dyeing and finishing wastewater by ozone catalytic oxidation pilot plant were studied. In addition, the effects of ozone catalytic oxidation on chroma were also studied. The removal of ammonia nitrogen and the improvement of the biodegradability of wastewater. Finally, the operating cost of ozone catalytic oxidation for printing and dyeing wastewater treatment was calculated. In the pilot-scale experiment process, combined with the optimum reaction conditions and the actual water quality characteristics of the high-efficiency clarifier, the pH and temperature of the wastewater entering the pilot plant were not adjusted. The optimum reaction conditions for the pilot-scale ozone catalytic oxidation were determined by continuous debugging: the dosage of ozone was 150 mg / L, the hydraulic retention time was 100 min, and the pilot plant of ozone catalytic oxidation was under the best reaction conditions. The effluent COD "f 50 mg / L, chroma" f 30 times can be achieved for a long time and can meet the first class A standard COD removal rate of about 65%, chromaticity removal rate about 70% and treatment cost 2.6 yuan per ton of water. In addition, the effluent biodegradability of high efficiency clarifier treated by ozonation catalytic oxidation pilot plant is less than 0.1, and the ammonia nitrogen concentration of effluent is below 4.2mg/L, the removal rate is about 10%. The results of the pilot study on ozonation and oxidation provide an alternative technology and design parameters for the advanced treatment of textile dyeing and finishing wastewater.
【學(xué)位授予單位】：華北水利水電大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類(lèi)號(hào)】：X791

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