1 Preface
China is a populous country, any resources and a huge population base compared to, are insignificant, the original relative per capita freshwater resources are scarce, coupled with the casual waste and irrational use, resulting in China's water shortages of contradictions more and more obvious, so for the rational management of urban wastewater management and utilization of increasingly important. But the big problem of urban environmental protection is the management of urban sewage, it has always been the focus of environmental management work, how to solve this problem is in front of all the counterparts of a difficult problem, the relevant departments to be able to start from the scientific concept of development, the use of new technologies to improve the exploration of the full range of improvements to improve the quality of life in our cities, and at the same time, bring more freshness and green for the city.
2 Urban sewage treatment status quo and problems
2.1 Backward technical means
The key to ensure the normal operation of sewage facilities and the efficiency of urban sewage treatment is the technology of sewage treatment. Although our country has been following the sewage treatment measures and routes in Europe and the United States, digested and absorbed many foreign advanced treatment technology, so that the original penniless sewage treatment has made great progress, but compared with the international advanced level, there is still a small gap: sewage treatment plant also has a low degree of automation of machinery, consumption and inefficiency and other issues, which fundamentally affects the efficiency of the urban sewage treatment. These all fundamentally affect the efficiency of urban wastewater treatment.
2.2 Concentrated distribution of sewage treatment plants, low utilization of recycled water
The recycling of urban recycled water is difficult because of the concentrated distribution of sewage treatment plants. Most of the drainage system in the old city is used in the combined system, in order to effectively manage urban sewage, the need to transform these combined drainage system into a diversion system, or to establish a sewage interception system; but this for the subsequent arrangement of recycled water pipelines caused a great deal of trouble, has been full of a variety of pipelines on the road it is difficult to have a foothold in the reclaimed water pipeline; an important way to improve the utilization rate of water resources Is the reuse of reclaimed water after sewage treatment, improve the utilization rate of reclaimed water in reducing sewage emissions at the same time can alleviate the municipal drainage pipes and the deterioration of the water environment. At present, most of the treatment plants in China are used to treat the water directly discharged from the secondary treatment mode, resulting in a large amount of wasted reclaimed water, how to improve the utilization rate of reclaimed water will be the main topic of our research.
2.3 Shortage of funds for sewage treatment plants, low management level
Government grants support the production and operation of sewage treatment plants and planning and development, but with the continued increase in the amount of urban sewage treatment and government grants continue to decrease, the traditional sewage treatment development model has not been adapted to the development of sewage treatment plants, but also the huge financial risks faced by the government has also made the urban sewage Treatment business is facing a bottleneck; most of the staff of the sewage treatment plant can not adapt to the complexity of urban sewage treatment technology, resulting in most of the urban sewage treatment plant has been established can not carry out normal work, urban sewage treatment work has been seriously affected; at the same time, sewage treatment equipment imported from foreign countries in the operation of a few years, have appeared to varying degrees of wear and tear, aging phenomenon. But because of the lack of funds and the lack of corresponding technical personnel, mechanical equipment maintenance and updating fault, which in turn affects the sewage treatment plant sewage treatment efficiency.
3 Improvement measures for urban wastewater treatment
3.1 Adopt new wastewater treatment process and improve the efficiency of sewage regeneration
Urban wastewater treatment efficiency is directly linked to the wastewater treatment process, wastewater treatment process, the more advanced, the higher the efficiency of wastewater treatment, but the main body of the urban wastewater treatment process is to have a reduction in the organic load as well as the energy consumption, the operation of the lower cost of activated mud pollution method, which is the best way to reduce organic loads and energy consumption. The main urban wastewater treatment process is to reduce organic load and energy consumption, low cost of activated mud pollution method. But we still need to some low resource consumption, less capital consumption, environmental affinity of the treatment process; urban sewage regeneration efficiency can not only save freshwater resources, but also further promote the technological development of the sewage treatment industry.
3.2 Rational layout of sewage treatment plants and increase investment
For urban sewage treatment should be integrated planning and rational layout, while rational planning of urban sewage treatment plant construction address and program, in order to promote the smooth progress of urban sewage treatment work; at present, the important factors restricting the treatment of urban sewage in our country is the backwardness of the technology and lack of funds. In order to manage the urban sewage more effectively, on the basis of the results and experience of urban sewage treatment in foreign developed countries, according to the actual situation of China's cities, increase the investment of funds, talents, science and technology, set up a professional research institutions, improve the technical level of urban sewage treatment, and at the same time, accelerate the popularization of urban sewage treatment technology, and actively research, develop technologies and treatment equipment that meet the requirements of China's urban sewage treatment in order to improve the quality of sewage treatment. Treatment technology and treatment equipment, in order to improve the efficiency of sewage treatment and water recycling capacity of the purpose.
3.3 Improve the management and equipment maintenance level
The professional quality training for sewage operators, improve the quality of sewage treatment staff, and then improve the level of sewage treatment management, which is conducive to improving the use of urban sewage treatment equipment; most of China's sewage treatment equipment is imported from foreign countries, due to the prolonged operation of the wear and tear of varying degrees, and management and maintenance personnel must pay attention to the equipment. Maintenance personnel must pay attention to the maintenance of equipment, regular cleaning and maintenance, but also to continue to enrich and improve their technical knowledge, so that when the equipment has a small problem in a timely manner to find the maintenance to avoid its expansion. Focus on the renewal of equipment such as the use of Chongqing Chutian Environmental Protection Engineering Co., Ltd. developed photocatalyst; wave catalyst; double catalyst sewage purification equipment. And through the use of new equipment can make the water pollution treatment more perfect and the effect of treatment is better than the national standard, to achieve water reuse.
4 Environmental protection and urban development in coordination
City development planning should take into account all aspects of factors, including the geographical location of the city, customs and culture, the characteristics of the city itself, etc., for a rational layout. Urban environment as the basis for all the preparatory work, the urban environment not only includes the natural and geographical environment, humanities and customs, meteorology and hydrology, etc., but also should take into account the city's economic level and other data; realm of the planning and surveying include data such as the atmosphere, hydrology, noise and other detection data as well as the number of pollutants in the city's history of the number of sources, etc., which constitute the basis of the planning of the city's environment. The planning and development of the city, is the overall and local coordination and unity of the relationship, is an important embodiment of scientific development. To regionalize the node, from a macro perspective to grasp the whole city, with dialectical thinking to think about the future of urban development. To do the development of the city and the harmonization of the environment.
From a broad architectural perspective of the constituent factors of the urban environment, the environment is the basic factor of human life. However, in the rapid advance of urbanization today, the important factor that restricts the development of urban economy and society is the environmental problem, environmental protection has become the focus of the current research, environmental science has also become the society's obvious science. The most acute environmental conflicts are the most concentrated cities among human beings, so as the urban development guide of urban planning must consider the protection of the environment, the study of environmental protection in urban planning is a new research direction based on the two interdisciplinary disciplines of urban planning and environmental studies, and it is a new way to seek for the sustainable development of the city as well as to build a harmonious environment. The over-consumption of resources by the development of urbanization has triggered a series of urban problems: such as traffic congestion in cities, air pollution, and the treatment of urban sewage. In the process of contemporary urbanization, planning workers in all countries of the world have generally realized that the important factor to consider environmental protection is the urban planning with the form of the environment as the basic object, and only by considering the environmental problems in urban planning can we prevent further deterioration of the environment fundamentally and help to improve the environment step by step. The city's sewage treatment, urban environmental planning, urban environmental protection, these issues are summarized in the harmony between man and nature **** place, the protection of the environment is a long-term important issue.
5 Conclusion
In short, the urban environmental engineering sewage management work is not only related to the people's life and work, but also related to the city's healthy and sustainable development, its importance can not be ignored. Only by seriously analyzing the problems in urban environmental sewage management, doing a good job in the use of advanced sewage treatment processes, scientific planning of sewage treatment facilities and improve the level of management and equipment maintenance and other three aspects of the work, balancing the relationship between environmental protection and urban development, in order to truly realize the improvement of the urban outlook, and to promote the development of the city's purpose.
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