Study On Reusing Waste Water And Potential Of Saving Water In Changchun City Industry

Water resources of the world are very limited. The process of worldwide urbanization and industrialization has made the situation of lacking freshwater which has become a key factor of economy development more serious. To provide appropriate clean water for the develop ing population and industry has become a growing technical, economic even political problem in many countries Wastewater reuse is taken for an available approach to solve water shortage & control water body contamination .While high lighting the shortage of water resources in contemporary times,City wasterwater reuseing is an important way to solve the water resources missing,and make the resources of water can keep on development.Reasonable development and use of the regencration water resources ,on the one hand reflect the principal of "superior quality excellent use ,the low quality is low to use",on the other hand can also exalt the benefit of the city water resource.While high lighting the shortage of water resources in Changchun city. This thesis summarizes the necessity of developing the treatment technology of water reusing and its basic techniques. It also explores the great significance in relieving the shortage of water supply and using water resource economically.The industrial water use is dominant in municipal water use ,so it is very important to increase the efficiency of industrial water use .This thesis through the analyze on the scheme of aminoacid wastwater treatment and reuse of maize biochemistry industry in Changchun Dehui.which elaboareted selection and design on this scheme and the process of nitrogen removal was design accordingly,The main achieve -ment swere as follows:the secondary biological strengthen treatment process and filtering process were used as recycle and reuse process, which was with a lot of advantages such as advanced technology, feasingbility on the economy and better social and economic efficiency. Particu -larly, the process of A/O and filtering process process had provided regular reference value for the wastewater reuse andsupply of the same wastewaterplant. Meanwhile, A high efficient hydrolysis –acidoge -nosis technology treating wastewater is demonstrated in this thesis. Through designing of scientific reactor structure, better condition of water power and biochemical condition can be achieved in the hydrolysis- acidogenosis system. Through improving mass tranfer in the reactor to improve efficacy of wastewate treatment efficiently, and the rate of removal of the organic matter has been improved .Through the spot compative test in the wastewater laboratory of Jilin Institute of architecture,the new technology can remove the organic matters efficiently in the shorter time when handle wastewater .For purpose of enhancing mass transfer in the improved hydrolysis-acidogenosis reactor through increasing reflus equipment.During the experiments,,the author tried to change water power characteristic and to improve the term of mass transfer in the reactor to increase the reaction velocity through regulating reflux ratio and controlling watercurrent speed. In the scheme of aminoacid wastwater treatment and reuse of maize biochemistry industry in Changchun Dehui,we adopted the result of this research the first time . The industrial water use is dominant in municipal water use ,so it is very important to increase the efficiency of industrial water use .Two important standards of saving water: The radio between water consumption 10,000 Yuan - output value (Vwf) and the ratio of industrial water repeat use (Pr) are analyzed and evaluated to study water saving methods in automobile industry in this paper,based on investigations about the quality of industrial water use .It has been proved that saving water is a promising alternative It is a feasible and actual solution to the municipal water shortage.