| In recent years, the rapid development of nano-technology, has a great influence on the economic development of society, the progress of science and technology, and the human life greatly.From the large device development to small devices which are paid more attention to, nano science and technology has made great contribution to its unique mechanics, magnetism, and quanptum effect, size effect and efficient catalytic properties, provide a great convenience for the research.Nanometer zinc oxide and titanium dioxide, occupy the important status among the inorganic functional materials, and the research and modification of one dimensional nano zinc oxide and titanium dioxide nanotube array has brought an unprecedented response to the field of nanotechnology.This paper research focuses mainly on the nano zinc oxide compound and the doping modification of nanometer titanium dioxide,the purpose is researching growth rate and morphology of nanometer microstructure and the optical properties and catalytic performance by controlling the reaction temperature, raw material ratio and pH value.This thesis also has carried on the brief overview about maleic anhydride wastewater treatment project, according to the requirements of original inlet and outlet water quality indicators, for maleic anhydride wastewater anaerobic treatment, guarantee of residual organic matter and ammonia nitrogen in the wastewater discharging standard.The concrete research content is as follows:1、ZnO-AgCl composite nanomaterials by hydrothermal precipitation two-steps.By adjusting the different raw material composition, reaction temperature, reaction time and pH value, adjust and control the morphology structure of nano ZnO-AgCl composite material, preparate tight and regular nano cluster structure.By studying the influence of reaction conditions on the nanocomposites, and carring on the mechanism analysis, we preliminarily determine optimum reaction conditions of preparating nanometer ZnO-AgCl composite, namely the pH=10, reaction temperature of 30 ℃ condition, in a ratio of 1:1 to 0.1 mol/L C(NH4Cl) and AgCl (content of 20 wt%) in the dark under the condition of reaction 2 h, in which ZnO-AgCl nano clusters were the best.2、Doping Mo nano titanium dioxide by anodic oxidatingThis chapter focuses on impact on the titanium dioxide nanotubes array after doping Mo, however, doping amount, applied voltage, pH and oxidation time become the main research influence factors, through the study of the control of the above factors,which can be prepared morphology, regular and orderly nanotube arrays.On this basis, the design of orthogonal test, the optimum reaction conditions were determined, namely the best molybdenum content was 1.0 wt%, going into the applied voltage to 40v dc power supply, setting the pH value of 6 and 4h in alcohol solvent water oxidation, quickly morphology properties best nano titanium dioxide modified materials.3、The anaerobic treatment process in reconciling anhydride wastewaterThis project has some features,such as sewage variety, high concentrations of pollutants, complicated composition, inlet COD acuities were 20000 mg/L.For such wastewater, firstly using "adjusting pool-dissolved air flotation process carries on the raw water pretreatment, reduces the oil content and the fluctuations in water quantity and water quality impact on biochemical part, raw water to make pool budget by using hydrolysis acidification, the macro-molecule refractory organic matter is decomposed into small molecule easily degradable organic matter, and then using " LIC "binary anaerobic reactor to remove most of the organic material in the waste water, avoiding adverse effects on the subsequent biochemical system, using the high concentration wastewater " A/O process and the second pond " deal sewage further processing, after the removal of residual organic matter and ammonia nitrogen in the wastewater discharging standard. |
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