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本 科 畢 業(yè) 論 文 題目:活性炭吸附法處理二甲基乙酰胺 廢水研究 學(xué)生姓名:杜朋輝 學(xué) 號(hào): 08036204 專業(yè)班級(jí):環(huán)境工程 082 班 指導(dǎo)教師:劉廣東 2021 年 6 月 10 日中國(guó)石油大學(xué)(華東)本科畢業(yè)論文 摘 要 本論文以 一定濃度 二甲基乙酰胺廢水 ( COD約 1600mg/L) 為對(duì)象,系統(tǒng)地研究活性炭投加量、操作溫度、反應(yīng)時(shí)間、原水 pH及原水濃度對(duì)吸附效果的影響,確定最佳反應(yīng)條件,并對(duì)該吸附過(guò)程進(jìn)行熱力學(xué)和動(dòng)力學(xué)模擬。研究結(jié)果表明:活性炭投加量 40g/L,操作溫度 298K,反應(yīng)時(shí)間 2h,原水 pH=7為最佳反應(yīng)條件,且該條件下原水 COD去除率達(dá) %;隨原水濃度的增加,活性炭對(duì) COD的吸附量增加, COD去除率降低?;钚蕴繉?duì)二甲基乙酰胺廢水的吸附過(guò)程適合用 Freundlich方程描述 , 吸附動(dòng)力學(xué)符合偽二級(jí)動(dòng)力學(xué)模型。 關(guān)鍵詞 :活性炭;吸附;二甲基乙酰胺廢水;有機(jī)污染物 中國(guó)石油大學(xué)(華東)本科畢業(yè)論文 ABSTRACT The DMAC wastewater whose concentration of COD was about 1600 mg/L was studied in this paper. This study examined the influence of AC does, temperature, time, pH and the initial concentration during the adsorption process, and thus determined the best operate conditions. Then the study focused on the sorption kiics and equilibrium sorptio n isotherms of the process. The results showed that when the dose of AC is 40g/L, the initial pH is 7, % of COD could be removed after 2h of agitation at 298K. Further more, the adsorption of COD onto AC was enhanced with an increase of initial DMAC concentration,however, the COD removal rate decreased. The Freundlich gave a better fit to all adsorption isotherms than Langmuir, and the kiics of adsorption of COD from DMAC wastewater onto AC was fit to the pseudosecond order model. Keyword: Activated carbon。 Adsorption。 DMAC wastewater。 Organic pollutants 中國(guó)石油大學(xué)(華東)本科畢業(yè)論文 目 錄 第 1 章 前言 ............................................................................................................................ 1 課題的來(lái)源及背景 .................................................................................................. 1 二甲基乙酰胺的性質(zhì) ...................................................................................... 1 二甲基乙酰胺的用途 ...................................................................................... 2 國(guó)內(nèi)外研究現(xiàn)狀 ...................................................................................................... 2 生物法 .............................................................................................................. 2 化學(xué)法 .............................................................................................................. 3 物理化學(xué)法 ...................................................................................................... 4 研究的目的及意義 .................................................................................................. 8 主要研究?jī)?nèi)容及技術(shù)路線 ...................................................................................... 8 研究?jī)?nèi)容 .......................................................................................................... 8 技術(shù)路線 .......................................................................................................... 9 技術(shù)路線 .......................................................................................................... 9 第 2 章 實(shí)驗(yàn)部分 .................................................................................................................. 10 實(shí)驗(yàn)材料 ................................................................................................................... 10 實(shí)驗(yàn)藥品 ........................................................................................................ 10 實(shí)驗(yàn)儀器 ........................................................................................................ 10 實(shí)驗(yàn)原理 ................................................................................................................... 10 實(shí)驗(yàn) 方法 ................................................................................................................... 10 活性炭預(yù)處理 ................................................................................................ 10 模擬廢水的制備 ............................................................................................ 11 水樣 COD 的測(cè)定 .......................................................................................... 11 第 3 章 實(shí)驗(yàn)結(jié)果及討論 ...................................................................................................... 12 活性炭投加量對(duì)廢水處理效果的影響 ................................................................... 12 溫度對(duì)廢水處理效果的影響 ................................................................................... 13 吸附時(shí)間對(duì)廢水處理效果的影響 ........................................................................... 14 原水 pH 對(duì)廢水處理效果的影響 ............................................................................ 14 原水 COD 濃度對(duì)廢水處理效果的影響 ................................................................. 15 中國(guó)石油大學(xué)(華東)本科畢業(yè)論文 熱力學(xué)吸附等溫線參數(shù)模擬 ................................................................................... 16 吸附動(dòng)力學(xué)參數(shù)模擬 ............................................................................................... 17 本章小結(jié) ............