外文文獻及翻譯---在由臭氧攪拌反應(yīng)器中有機污染物的破壞模型(存儲版)
【正文】 ting the enhancement factor of mass transfer by ozone self2deposition and ozonation reactions. Because the derived enhancement factor is an implicit expression , it is inconvenient in application to simulating the degradation rates of organic pollutants in an ozonation reactor. In this paper a simple explicit expression of the enhancement factor (Cheng , 2020) relating to the Danckwerts surface renewal model in ozone absorption with a first order ozone self2deposition and a second order ozonation or a series of parallel ozonation reactions ( ajA + Bj →pj Pj , j = 1 ,2 ?n) has been applied to predict the DCP destruction rate by ozonation in a semi2batch stirred tank reactor. 1 Mathematical model 1. 1 Destruction of one single organic pollutant in aqueous solution by ozonation When ozone is bubbled into a semibatch stirred tank containing one organic pollutant solution , both gas and liquid phases can be assumed well mixed. The mass balance for ozone in the gas phase can be expressed as (Qiu , 1999) : where cA , G , cA , G,0 , cA , i and cA ,L represent the concentration of ozone in the gas bulk , in the influent stream of the reactor ,at the gas2liquid interface and in the liquid bulk respectively. H , uG , εG are the liquid height in the reactor , the velocity of gas phase and the gas holdup fraction , respectively , and t is the absorption time. kL as is the overall volumetric ozone physical mass transfer coefficient ( kL is the physical mass transfer coefficient , as is the specific interfacial area ) , E is the enhancement factor , and their product , kL as E , denotes the chemical mass transfer coefficient as discussed above. Because no dissolved ozone was detected in most experiments ( Kuo , 1982 。 enhancement factor Introduction Because of the high oxidation potential of ozone (O3 ) , ozonation has been regarded as a promising method for drinking and waste water treatment. A wide range of organic pollutants in water can be degraded by O3 , O3 bined with H2O2 or UV light , which are known as Advanced Chemical Oxidation Processes (AOPs) . Compared to the traditional treatment technologies , such as activated carbon adsorption or biodegradation , chemical oxidation with ozone offers the advantages of greater rate and extent of contaminant destruction. Although there are numerous reports (Hoigne , 1983 。 2,42 二氯苯酚（ 2,42DCP）和2,62DCP 或者 是他們的混合物被選擇作為模擬的模型化合物，而且預(yù)計 DCP 聚合物是和一些可測量的數(shù)據(jù)區(qū)別開的。這種影響程度用增強因數(shù) E來描述， E被定義為傳質(zhì)的化學(xué)吸收系數(shù)與其物理吸收系數(shù)的比值。吉隆坡的整體容積臭氧物質(zhì)傳熱傳質(zhì)系數(shù) (這個是物理質(zhì)系數(shù)、具體的面積 ),是增強因子 ,以及他們的產(chǎn)品 ,如 E表示 ,這個化學(xué)質(zhì)系數(shù)如上所述。 只有當(dāng)以下情況舉行， (2)是合法的 M = Md + M1 [1 ( E 1) /Q] 4. 通過臭氧氧化破壞水中有機污染物的混合溶液 最初在液體中有兩個或更多的污染 ,吸收臭氧是伴隨著平行臭氧氧化反應(yīng)。邱（邱， 1999）的一些實驗結(jié)果也列在圖 1a和圖 2a中。s) kd , s 1 kL a , s 1 kL 104mPs εG 1 ■ 5 1 106 0. 01134 3. 8 0. 01 2 ● 7 1 1. 1 108 0. 01134 3. 8 0. 01 3 + 9 1 7. 5 0. 01134 3. 8 0.
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