外文文献及翻译---在由臭氧搅拌反应器中有机污染物的破坏模型(编辑修改稿)

外文文献及翻译---在由臭氧搅拌反应器中有机污染物的破坏模型(编辑修改稿)内容摘要：

When two or more contaminants are present initially in the liquid , the absorption of ozone is acpanied by parallel ozonation reactions. If the petition between these reactions is considered to be dependent only on the reaction constants ,the depletion rate of organic ponent Bj in the liquid phase can be derived as The mass balance for ozone A in the gas phase is the same as Eq. (1) . For the enhancement factor in ozone absorption with parallel ozonation reactions , an approximate expression can also be deduced relating to the surface renewal model as (Cheng , 2020) where Ej represents the supposed enhancement factor in ozone absorption acpanied by a first order ozone self2 deposition reaction and a second order ozonation reaction of a single reactant Bj . 2 Simulating and experimental results 2 ,42DCP and 2 ,62DCP isomers were chosen as the model pounds for simulatingwhich are the least and most reactive species with ozone in the DCP isomers respectively. Dichlorophenols have been widely used in the production of pesticides , dyes and other industrial chemicals. They are listed among the 65 priority pollutants by the EPA in the Clean Water Act of 1977. The water quality criteria remended by the EPA for DCP is 0. 04 to 0. 5μgL 1 . For ozone absorption in a single DCP solution , the enhancement factor E , the concentrations of DCP in the liquid bulk and ozone in the gas phase , cB ,L , cA , G , can be predicted theoretically as shown in Fig. 1 and Fig. 2. by bining Eqs. (1) , (2) and (3) and applying the numeric method of MATLAB ODE program. Some experimental results by Qiu (Qiu ,1999) are also presented in Fig. 1a and Fig. 2a. The stirred2tank reactor used in the experiment , as sketched in Fig. 3 , is posed of a glass cylinder with inner diameter of 15 cm held between the top and bottom circular stainless steel plates by eight screw rods. A fourbladed baffle of stainless steel is inserted into the reactor to increase the turbulence of the gas and liquid phases. The stirrer is a turbine impeller with 6 blades. The gas sparger , a fritted disc with a porosity of 40 to 60μm ,is connected to a glass tube through which the ozone gas is bubbled into the tank. The initial volume of the solution is 3 liters in each experiment. Under the experimental condition the stirring Reynolds number of the solution is evaluated greater than 10000 , indicating perfect mixing has been achieved. Fig. 1 Prediction of enhancement factor and concentration of ozone absorption in 2 ,42DCP solution (Stir speed : 200 r/min , cA , G,0 = 0. 0002 mol/L , cB ,L ,0 = 0. 0005 mol/L , a = 2 , Sr = 0. 24) Curve No. Key * pH q , L/min k1,L/(mols) 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. 5 108 0. 01134 3. 8 0. 01 4 ▲ 7 1. 1 108 0. 013。