電化學氧化降解酚類有機污染物實驗研究.pdf

1、沈陽建筑大學碩士學位論文電化學氧化降解酚類有機污染物實驗研究姓名：郝苓汀申請學位級別：碩士專業(yè)：環(huán)境工程指導教師：胡俊生2011-01碩士研究生學位論文 Abstract IIIAbstractWith the development of modern industry and economy, water pollution has alreadybecome an austere issue whic

2、h baffles society of continuable development. At present, it hasbeen the difficutlty and focus of the waste treatment for disposal of toxic and biorefractoryorganics which can’ t be treated ef

3、fectively by the current ordinary waste water treatmenttechnology. In this article, based on the research and development of treatment method ofphenolic organic waste water, the studies on wast

4、e water select 4- chlorophenol as simulatingorganic is selected and the corresponding electro- oxidation degradation behaviors andcharacteristics are investigated. And we will develop the fundamental study

5、 on the electro-oxidation technology for the organics waste water treatment .This paper selects stainless steel as a matrix, first electroplates a- PbO2 as diamond made byelectro- dip process, t

6、hen electroplates ß - PbO2 doping NaF as suface layer. In electroplatingsystem suface layer, using orthogonal experiment investigation temperature, current density andthe quality of the NaF c

7、oncentration affect on PbO2 electrode oxidation degradation 4- CP’ selectricity catalytic activity. Finally arrive at the best conditions of electroplating PbO2 electrode:the temperature is 70℃, cu

8、rrent density is 15mA/cm - 2, the quality of the NaF concentration is1.26g/L - 1. And the factor analysis obtains the current density’ s effection is the biggest, the NaFconcentration is subordi

9、nate, and the influence of the temperature is the smallest. And further,which is prepared for additional experiment with higher electricity catalytic activity of stainlesssteel base PbO2 electro

10、de.By using the primitive PbO2 electrode as anode, and regardes the stainless steel as cathodeto degrade stimulant 4- chlorophenol waste water in a no dissepimental electrochemical reactorwhich

11、is cylindrical and self- made by plexiglass. The factors such as applied voltage, pH,support electrolytes concentration, aeration rate, and initial pollutants concentration are thesystematic and c

12、omprehensive research in the process of degrading the pollutants. The results ofexperimental show that when the initial pollutants concentration is 100 mg/L, the removal ratewill be increased a

13、s the increasing of applied voltage; the suitable condition is 10 V. The optimalconditions of electrolyte concentration and aeration rate are 0.04mol/L and 0.2m 3· h- 1 respectively,the remo

14、val rate of 4- CP is the best. The degrading of pollutions is more effected by wastewaterinitial pH. In acidic condition, the removal rate of 4- CP enhanced obviously, but not little isbette

15、r, when the pH is 3, the removal rate of 4- CP is the highest. Pollution wiping off ratio isdecreased as increasing the initial pollution concentration, but the absolute wiping off value is

16、increased wholly.The kinetcs study of pollutions electro- oxidaiton indicates that the electrolytic oxidationaccords with the apparent first- order kinetics law. Simultaneously studies the oxidation

17、 rateconstant impacted by the factors such as applied voltage, pH and initial pollutants concentration.The results indicate that the oxidation rate constant is firstly increased and then decreas