本文選題：鉆井廢水 + 混凝�。� 參考：《西南石油大學(xué)》2015年碩士論文

【摘要】：石油和天然氣工業(yè)的開發(fā)過程中會產(chǎn)生大量的鉆井廢水,其中含有大量油類、重金屬離子、難降解有機物、氯化物等有毒有害物質(zhì),如果不經(jīng)處理直接排放到環(huán)境中,將會對人類的生活、生產(chǎn)造成嚴重危害。本文以取自磨溪的某鉆井廢水為處理對象,通過混凝+三維電極法進行處理,為了進一步強化處理效果,在三維電極系統(tǒng)中加入Fenton試劑,探索最佳混凝劑種類及其混凝條件；同時探索將活性碳纖維(ACF)用于三維電極系統(tǒng)中第三極材料的處理效果；分析ACF-三維電極法處理該鉆井廢水的最佳工藝條件及加入Fenton試劑后的條件優(yōu)化及其處理效果。 通過混凝實驗確定出最佳混凝劑為硫酸鋁,最佳助凝劑為非離子型聚丙烯酰胺。最佳混凝條件為：pH值為9,硫酸鋁加量9g/L,非離子型聚丙烯酰胺加量為10mg/L,在此條件下CODcr去除率為65.4%,脫色率為90%。將活性碳纖維和顆�；钚蕴�(GAC)分別作吸附劑和三維電極系統(tǒng)的第三極材料用于處理鉆井廢水,對比其處理效果。結(jié)果表明：ACF比GAC更適合作第三極材料。通過正交實驗得到ACF-三維電極法處理鉆井廢水的最佳條件為：初始CODcr為1000mg/L, pH值為5,電流密度為31.8mA/cm2,曝氣量為0.8L/min,電解時間為60min,該最優(yōu)條件下的CODcr去除率達40.3%,ACF-三維電極法去除鉆井廢水的CODcr的反應(yīng)過程遵從一級反應(yīng)動力學(xué),其宏觀動力學(xué)方程為：CODcr=Co*e-(0.00834+0.00585)。加入Fenton試劑的三維電極系統(tǒng)最佳c(H2O2)/c(Fe2+)為13.6,最佳Fenton試劑加量(c(H2O2)+c(Fe2+))為70.1mmol/L,在此條件下,鉆井廢水的CODcr去除率可達72.5%、TOC去除率為45.4%。三維電極-Fenton試劑法去除鉆井廢水的CODcr的反應(yīng)過程遵從一級反應(yīng)動力學(xué),其宏觀動力學(xué)方程為：CODCr=Co*e-(0.01984t+0-01468)。
[Abstract]:During the development of the petroleum and natural gas industry, a large amount of drilling wastewater will be produced, which contains a large amount of oil, heavy metal ions, refractory organic compounds, chlorides and other toxic and harmful substances, which are discharged directly into the environment without treatment. Will cause serious harm to human life and production. In this paper, a drilling wastewater from Moxi was treated by coagulation three-dimensional electrode method. In order to further strengthen the treatment effect, Fenton reagent was added to the three-dimensional electrode system to explore the best coagulant types and coagulation conditions. At the same time, the application of activated carbon fiber (ACFC) to the treatment of the third electrode material in the three-dimensional electrode system was explored, and the optimum process conditions of the treatment of the drilling wastewater by the ACF-3D electrode method and the optimization of the conditions after the addition of Fenton reagent and the treatment effect were analyzed. The best coagulant is aluminum sulfate and the best coagulant is non-ionic polyacrylamide. The optimum coagulation conditions were as follows: pH 9, aluminum sulfate 9 g / L, Nonionic polyacrylamide 10 mg / L, CODcr removal rate 65.4% and decolorization rate 90%. Activated carbon fiber (ACF) and granular activated carbon (GAC) were used as the adsorbent and the third electrode material in the three dimensional electrode system respectively to treat drilling wastewater. The results show that: ACF is more suitable for the third pole than GAC. The optimum conditions for treatment of drilling wastewater by ACF-3D electrode method are as follows: initial CODcr is 1000mg / L, pH is 5, current density is 31.8 Ma / cm ~ 2, aeration rate is 0.8L / min, electrolysis time is 60min. Under the optimal condition, the removal rate of CODcr is 40.3% ACF-3D electrode. The reaction process of CODcr removal from drilling wastewater follows the first-order reaction kinetics. The macroscopic kinetic equation is: 1: CODCRE CODCRE CODCRE (0.00834 0.00585). The optimum c(H2O2)/c(Fe2 of three-dimension electrode system with Fenton reagent is 13.6, and the optimum Fenton reagent dosage is 70.1 mmol / L). Under these conditions, the CODcr removal rate of drilling wastewater can reach 72.5% and 45.4%. The removal of CODcr from drilling wastewater by three-dimensional electrode Fenton reagent method followed the first-order reaction kinetics. The macroscopic kinetic equation of the reaction was: 1 / CODCr-Coe-Nine 0.01984t 0-01468.
【學(xué)位授予單位】：西南石油大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：X741

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本文編號：1806020