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The Research On The Reaction Course And Application Of Three Forms Micro-interface Including Solid, Gas And Biology

Posted on:2005-10-03Degree:MasterType:Thesis
Country:ChinaCandidate:J Y WuFull Text:PDF
GTID:2121360122493803Subject:Physical chemistry
Abstract/Summary:PDF Full Text Request
Along with the advance of science and technology, especially chemistry, the development of industry promotes the social progress and raises people's living standard. At the same time, with unreasonable development and the drain of chemical material, environment, especially water resource has been polluted unprecedentedly. So the improvement of water quality becomes a problem that modern society has to value. Chemistry can cause disaster, at the same time, chemistry can bring happiness, chemistry can control environment and improve environment too. The technology of water treatment involves a lot of interface course and interface chemistry, which are necessary in the course of water treatment. However, the research and the knowledge on interface science are still not perfect. This paper is to study the problem of water treatment on the basis of the interface course of solid-gas-liquid.The Report of Investigation on the Development Stratagem of Natural Science released by nation nature science fund committee points out: The research of pollution control chemisty depends on and promotes interface chemistry (adsorption, catalysis etc.), colloid chemistry (flocculation, sediment theory etc.), chemistry separation engineering and chemical reaction engineering (low concentration system) etc, and it also promotes the development of the pollution control technology, resource reasonable exploitation and utilization, clean production technology and other aspects.lt is evident that colloid & interface science and technology have an important effect on environment and pollutes control course.This paper has studied and discussed the reducing of nitrobenzene in the microelectrolysis reaction course, which is a solid-liquid interface course. And it has discussed the dynamics of microelectrolysis reaction of nitrobenzene's reducing as well. In the experiment, it has been discovered that in the mild acid or neutral condition nitrobenzene can be changed in large quantities, so that entire sewage system becomes easy to convert by biochemical method. Through dynamics simulation research, it has been discovered that, the efficiency of reducing andchanging nitrobenzene can be increased by controlling the stopover time of entire reaction course.Flotation technology, but usually by using the tiny hole puffing air, have been gradually applied to dispose sewage domestically and internationally , in which the bubbles produced are larger, and the efficiency of the use of bubble is lower. In this experiment, equipment is assembled independently to produce microbubbles, then the nature of microbubble and how to use microbubbles produced to dispose polluted river water and sewage were discussed. At the same time, an instrument of double-drive dynamic membrane pressure designed by Professor Chen Banglin ( the JM99C model) in this laboratory was applied to measure membrane pressure and area of hystersis loop of the disposed sewage. It is discovered in the experiment that there's an identical decrease trend of the COD and BOD of the sewage disposed by microbubble technology. And the membrane presses and area of hystersis loop show that after being disposed by microbubbles, biochemical conversion ability of sewage can be raised. This kind of research method has not been reported in the literature.Biological film is a kind of efficient method of water treatment. Comparing with the tradition water biological method, biological film has a lot of advantages, such as: it produced less mud, will not arouse mud expansion, is adapt to the change of the quality and quantity of the sewage, and is easy and convenient to manage, etc. The key of this technology is to form biological film with good function. The growth and formation of biological film are the prerequisite to effective sewage disposing. The selection of the carrier of biological film is also a key. This paper mainly studued new inorganic suspended material used in the fixed biological film handling technology. Because of the electrical nature of inorganic material surface, microorganism i...
Keywords/Search Tags:Microelectrolysis, Microbubble, Biological film, Nitrobenzene, Gas chromatography, Instrument of double-drive dynamic membrane pressure, Interface
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