本文選題：對硝基苯乙酮 + Fenton催化氧化�。� 參考：《揚州大學》2017年碩士論文

【摘要】：硝基苯類化合物是重要的化工原料之一,常用在染料、醫(yī)藥等行業(yè)。隨著化工工業(yè)的發(fā)展,硝基苯類化合物不斷的進入到人們的生活環(huán)境中。對硝基苯乙酮廢水含有大量的硝基苯類化合物,高毒性、化學性質穩(wěn)定、難生物降解、進入水體污染持續(xù)時間長等特點。由于該產(chǎn)品生產(chǎn)化工廠很少,導致當前對該種廢水處理仍缺乏相對成熟的工藝。本文旨在研究物化法和生物法組合工藝對硝基苯乙酮生產(chǎn)廢水的處理效果和適宜工藝條件。Fenton催化氧化技術在處理難降解有機污染物時具有獨特的優(yōu)勢,由于試劑成本的較高,一般用于廢水處理的預處理階段,故選擇Fenton催化氧化進行對硝基苯乙酮生產(chǎn)廢水的化學預處理。通過一系列的試驗研究,初步探究Fenton催化氧化體系中各因素對主要污染物降解效果的影響,以及最佳的Fenton試劑投加量。然而廢水經(jīng)過Fenton催化氧化處理后,對硝基苯乙酮生產(chǎn)廢水可生化性得到明顯的提高,但出水各項指標仍未達到《綜合污水排放標準》。采用水解酸化/好氧對預處理后的對硝基苯乙酮生產(chǎn)廢水進一步的生物處理,達到了對硝基苯乙酮廢水的最終處理目標。同時采用探索的適宜工藝條件進行實際工程的技術指導,進一步的探究該組合工藝對該種廢水的降解效果。研究表明:1.Fenton催化氧化體系處理對硝基苯乙酮生產(chǎn)廢水的工藝最佳條件探索試驗可得出:a)Fenton催化氧化體中FeS04 · 7H20的投加量對其影響最大,pH值和雙氧水投加量的影響次之;b)在室溫條件下,當FeS04·7H20的投加量為2.5g/L,pH值為3.0,雙氧水的體積分數(shù)為0.9%,反應時間為120min時,Fenton處理效果最佳;c)最優(yōu)條件下硝基苯類去除率為94.87%,CODcr的去除率達到57.58%。2.采用水解酸化/好氧組合處理工藝對經(jīng)過Fenton催化氧化對硝基苯乙酮生產(chǎn)廢水進行進一步的生化實驗,達到了對硝基苯乙酮生產(chǎn)廢水最終處理目標。試驗發(fā)現(xiàn),水解酸化能承受的最大進水濃度為CODcr=1200mg/L,此時CODcr去除率達到55.25%,硝基苯類的去除率為95.61%;水解酸化后出水好氧處理,CODcr總去除率上升至79.18%,滿足出水指標國家污水綜合排放三級標準(GB8978-1996)相關規(guī)定(CODcr500mg/L,硝基苯類含量5mg/L)。3.現(xiàn)場對硝基苯乙酮生產(chǎn)廢水采用混合酸析-Fenton催化氧化-水解酸化-A/O-臭氧氧化-接觸氧化工藝處理,參照實驗室得出結果進行相關調試,出水CODcr為220mg/L(500mg/L)、硝基苯類含量為1.5mg/L(5mg/L)、色度為75倍(80倍)、總氮為35mg/L(75mg/L),各項指標達到園區(qū)管網(wǎng)接收的標準,且滿足國家污水綜合排放三級標準(GB8978-1996),且穩(wěn)定運行達到半年以上。同時處理廢水成本為3.91元/噸,適合工程化應用。
[Abstract]:Nitrobenzene compounds are one of the important chemical raw materials, commonly used in dye, medicine and other industries. With the development of chemical industry, nitrobenzene compounds come into people's living environment. P-nitroacetophenone wastewater contains a large number of nitrobenzene compounds, which is highly toxic, stable in chemical properties, difficult to biodegrade, and has long duration of entering water pollution. Due to the few chemical plants, there is still a lack of mature process for the treatment of this kind of wastewater. The purpose of this paper is to study the treatment effect of p-nitroacetophenone wastewater by physicochemical and biological processes and its suitable conditions. Fenton catalytic oxidation technology has unique advantages in the treatment of refractory organic pollutants, due to the high cost of reagent. It is generally used in the pretreatment stage of wastewater treatment, so Fenton catalytic oxidation is chosen for chemical pretreatment of p-nitroacetophenone production wastewater. Through a series of experimental studies, the effects of various factors on the degradation of main pollutants in Fenton catalytic oxidation system and the optimum dosage of Fenton reagent were studied. However, after Fenton catalytic oxidation, the biodegradability of p-nitroacetophenone wastewater was improved obviously, but the effluent indexes were still not up to the Comprehensive sewage discharge Standard. Further biological treatment of p-nitroacetophenone wastewater was carried out by hydrolytic acidification / aerobic treatment, and the final treatment goal of p-nitroacetophenone wastewater was achieved. At the same time, the technical guidance of practical engineering was carried out under the suitable technological conditions, and the effect of the combined process on the degradation of this kind of wastewater was further explored. The results show that: 1. Fenton catalytic oxidation system for the treatment of p-nitroacetophenone wastewater can be found that the addition of FeS04 7H20 in Fenton catalytic oxidation system has the greatest influence on the pH value and the amount of hydrogen peroxide. At room temperature, When the dosage of FeS04 7H20 is 2.5 g / L ~ (-1) pH = 3.0, the volume fraction of hydrogen peroxide is 0.9, and the reaction time is 120min, the removal rate of nitrobenzene is 94.87% and the removal rate of COD _ (cr) is 57.58 路2. Further biochemical experiments were carried out on the wastewater from p-nitroacetophenone production by Fenton catalytic oxidation with hydrolytic acidification / aerobic treatment process. The final treatment goal of p-nitroacetophenone wastewater was achieved. The experiment found that, The maximum influent concentration of hydrolytic acidification is 1 200 mg / L, the CODcr removal rate is 55.25 and the removal rate of nitrobenzene is 95.61%. Standard GB 8978-1996) related regulations CODCR 500 mg / L, nitrobenzene content 5 mg / L ~ (3). The wastewater from the production of p-nitroacetophenone was treated by mixed acid-eluter-Fenton catalytic oxidation-hydrolytic acidification-A / O -ozone oxidation-contact oxidation process, and the relevant debugging was carried out according to the results obtained from the laboratory. The effluent CODcr is 220 mg / L = 500 mg / L, the content of nitrobenzene is 1.5 mg / L / L ~ (5) mg / L, the chroma is 75 times ~ 80 times, the total nitrogen is 35 mg / L ~ (75) mg / L ~ (-1), all the indexes meet the standard of receiving the park pipe network, and meet the national comprehensive wastewater discharge standard (GB8978-1996), and run steadily for more than half a year. At the same time, the cost of wastewater treatment is 3.91 yuan / ton, which is suitable for engineering application.
【學位授予單位】：揚州大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：X783

【參考文獻】

相關期刊論文 前10條

1 曹飛;張波;吳春篤;蔣霞;陳閃閃;;新型鐵碳微電解填料對2,4-二硝基苯酚的降解實驗[J];水處理技術;2016年04期

2 付冬梅;章飛芳;王聯(lián)芝;楊帆;梁鑫淼;;催化濕式共氧化法同時去除硝基苯和苯酚（英文）[J];催化學報;2015年07期

3 朱樂輝;孟祥超;蔣旭華;江Pr;;醫(yī)藥中間體生產(chǎn)廢水處理工程實例[J];工業(yè)水處理;2014年06期

4 冀巍;;大孔網(wǎng)狀聚氨酯載體MBBR工藝處理低濃度硝基苯廢水實驗研究[J];環(huán)境科學與管理;2014年06期

5 馬喜君;侯文高;蔡云;賈銀梅;;納米鐵/凹土/PVA復合材料在硝基苯廢水處理中的應用[J];淮陰工學院學報;2013年03期

6 康雅凝;李華楠;徐冰冰;齊飛;趙倫;;酸活化赤泥催化臭氧氧化降解水中硝基苯的效能研究[J];環(huán)境科學;2013年05期

7 石飛;劉紅;李楊薇;黃青;宋衛(wèi)坤;;Ba/TiO_2/MCM-41光催化降解對硝基苯甲酸[J];環(huán)境工程學報;2012年08期

8 徐加慶;董曉毅;;基于HPLC的厭氧-好氧生物降解工藝處理模擬苯胺廢水的研究[J];環(huán)境工程學報;2011年09期

9 盧桂蘭;郭觀林;王世杰;谷慶寶;李發(fā)生;;水體中硝基苯厭氧降解微生物的篩選及其降解特性研究[J];農(nóng)業(yè)環(huán)境科學學報;2010年03期

10 吳曉亮;江霜英;;水解酸化工藝的改進[J];環(huán)境工程;2009年05期

相關博士學位論文 前2條

1 李宏;Fenton高級氧化技術氧化降解多環(huán)芳烴類染料廢水的研究[D];重慶大學;2007年

2 付冬梅;高級氧化技術處理難降解有機廢水的研究[D];中國科學院研究生院（大連化學物理研究所）;2005年

相關碩士學位論文 前3條

1 孫青亮;水解酸化—缺氧—好氧工藝處理石化廢水的試驗研究[D];北京化工大學;2013年

2 石楠;FENTON和類FENTON技術處理水中有機污染物的研究[D];蘭州交通大學;2013年

3 張華;臭氧及催化臭氧化降解苯乙酮[D];浙江工業(yè)大學;2010年

，

本文編號：2032472