Effective measures for sewage treatment of urban environmental engineering?

Urban environmental engineering sewage treatment is the primary project of China's economic construction. Under the background of accelerating urbanization, it is necessary to strengthen the sewage treatment of urban environmental engineering, improve people's quality of life and realize the sustainable development of the city. Based on China's national conditions, this paper starts with the impact of urban sewage problems and the lack of treatment at this stage, from the perspective of optimizing urban construction, focusing on standardizing sewage discharge and optimizing sewage treatment effect, highlighting the value of sewage treatment in environmental engineering construction, and formulating sewage treatment countermeasures for urban environmental engineering, so as to coordinate the relationship between environment and economic development, promote sustained and rapid urbanization, achieve high-quality construction, overcome the shortcomings of urban infrastructure in China, and comprehensively promote urban construction and environmental engineering construction.

1 the importance of urban environmental engineering sewage treatment construction

1. 1 Improve the level of urbanization

At present, the speed of urbanization in China is gradually accelerating, which greatly promotes the development of social economy, culture and education in China and improves people's living standards and quality of life, but it also gradually exposes many contradictions. The scale of urbanization is expanding too fast, the quality of urban construction is difficult to keep up with the development speed, the construction of urban basic security facilities is insufficient, the social security system is not perfect, and so on. Under the rapid urbanization, contradictions within social groups are prominent. Perfecting the sewage treatment planning of urban environmental engineering is an important project to alleviate the contradiction of urban construction. Sewage treatment has two direct functions: (1) turning waste into treasure. After removing pollutants and impurities from sewage, nutrients can be recovered, and economic and social benefits and water resources utilization efficiency can be improved. (2) Improve people's quality of life. Sewage treatment is the basic construction of urban landscape engineering. The goal of urbanization in China is to give priority to the development of "smart" cities, realize the recycling of water resources, sewage and rainwater, and provide sufficient water resources for urban development. The improvement and implementation of various sewage treatment measures in the development of environmental engineering will form high-quality protection of water resources, meet the optimal allocation of resources under the sustainable development of cities, and create an excellent environment for urban construction and development and people's lives.

1.2 Highlighting the value of urban construction

Effective sewage treatment can optimize the utilization effect of water resources. The sewage treatment system is planned from the overall perspective of urban development and construction, dealing with parasites, microorganisms, heavy metals and other substances in sewage, and then recycling the sewage. Sludge can be used as the raw material of organic fertilizer to ensure the efficient utilization of resources in the process of urbanization and realize the dual development of economy and environment. The improvement of sewage treatment facilities and planning can effectively alleviate the current shortage and waste of water resources, improve the level of urbanization and coordinate the relationship between environmental protection and economy. The sewage treatment effect of environmental engineering can reflect the urban development level and urban construction stage. Only by solving the problems of water shortage and sewage treatment in the process of accelerating urbanization can we restore the urban ecological environment, improve the level of urban development and realize the harmonious and sustainable development of the city.

2. Present situation and deficiency of urban environmental engineering sewage treatment

2. 1 Insufficient sewage treatment facilities

China attaches great importance to the lack of urban water resources, so China began to implement various measures to prevent and control water pollution in the 20th century, and set up special sewage treatment plants in many cities, but it is a pity that it still cannot meet people's living needs. Due to the shortage of sewage treatment facilities, it is difficult to give full play to the resource advantages, and urban sewage treatment can not reach the goal of urban environmental engineering for a long time. In the construction of sewage treatment in most cities, too much attention is paid to the setting of sewage collection pipe network, while efficiency is neglected, resulting in the construction scale of drainage pipe network trunk roads and sewage treatment plants can not meet the needs of urban sewage treatment. Although the main road can solve the problem of sewage collection in a large area, it is difficult to plan a scientific and systematic sewage collection pipe network in the whole city, and the sewage collection is not comprehensive, and the sewage treatment and sewage treatment can hardly meet the requirements of urban construction. In addition, many rainwater collection pipe networks and sewage drainage pipes are used together in the old city, which makes rainwater pipes and urban domestic sewage mixed together. The combined branch pipes of sewage pipe network do not match the reformed sewage treatment system, so it is difficult for sewage to enter the main road. In addition, due to the rapid development of industrialization in China, the quantity and difficulty of sewage treatment are increasing. Although China has introduced advanced sewage treatment technology, it still can't compare with developed countries. In particular, the mechanization and automation of sewage treatment in China are low, the management level and technical maintenance level are backward, and the progress of sewage treatment in urban environmental engineering is slow.

2.2 Lack of preparation work

In the early stage of urban construction, environmental engineering sewage treatment system was not paid attention to, so there was a lack of correct feasibility report and insufficient feasibility study in the construction of water and sewage treatment projects, and there was no demonstration on the operability, project investment and construction steps of the project construction, which not only affected the development of environmental engineering sewage treatment projects, but also reduced the use efficiency after completion. Many projects started before the review, and the feasibility report was false. There are problems in the implementation of most sewage treatment feasibility reports, and the role of feasibility reports is difficult to highlight. The preliminary preparation of urban construction sewage treatment in China is in the blank supervision stage. Urban construction projects are not evaluated and treated according to the standards of urban sewage discharge and treatment, and there is no corresponding maintenance, maintenance and construction management mechanism for the design and construction of drainage pipe network. Therefore, in the preparation of urban sewage treatment, the urban pipe network system is not designed according to the urban construction situation, and the pipe network is easy to be damaged during the construction process, so it is difficult to maintain it in time.

2.3 improper sewage treatment methods

Due to the rapid expansion of urban scale in China, the contradiction between sewage treatment planning and urban construction is prominent, the coordination between long-term development planning and recent urban construction goals is insufficient, and there are problems in infrastructure construction and implementation in the near future, which also brings challenges to sewage treatment. There are obvious contradictions in the choice of centralized sewage treatment and decentralized sewage treatment, as well as system management and planning. Centralized sewage treatment can save money and facilitate planning and management, but it will increase the difficulty of coordinating operation and construction period; Decentralized treatment is the use of small sewage treatment plants to realize nearby sewage treatment, which can improve the flexibility of sewage treatment and facilitate management and control, but it lacks large-scale financial and technical support, so decentralized sewage treatment can not meet the national environmental protection requirements and the sewage treatment standards are not suitable. Therefore, how to choose sewage treatment methods affects the reuse level of urban water resources.

3 effective measures for sewage treatment of urban environmental engineering

3. 1 Improve the sewage treatment infrastructure of urban environmental engineering.

The improvement of urban environmental engineering sewage treatment facilities can lay a foundation for urban environmental engineering sewage treatment. At present, under the background of urbanization, to improve the sewage treatment infrastructure of urban environmental engineering, we should do the following three things well: (1) It is of course good to repair and transform the existing sewage treatment facilities, improve the sewage treatment level to the maximum according to the sewage treatment technology and methods, and build sewage treatment facilities according to the corresponding technical requirements, but based on the concept of reducing sewage treatment costs, it is the best choice to repair and transform the old equipment and facilities. (2) According to the requirements of advanced sewage treatment technology for sewage treatment equipment, the existing sewage treatment facilities will be transformed, and the construction of urban sewage treatment equipment and facilities will be gradually improved with emphasis on new construction and original transformation. On the basis of strictly following the norms and procedures of sewage treatment, we can complete the construction goals of different sewage treatment stages according to the current situation of urban development and planning requirements, and meet the needs of urban development for sewage treatment facilities alone; (3) From the point of view of improving the sewage treatment effect, after the completion of sewage treatment facilities, the reserved interface at the sewage delivery pipeline can be improved in the project according to the recent sewage treatment construction situation, effectively isolating the sewage pipeline and rainwater pipeline in the main pipeline, realizing the connection between the main pipeline and the sewage collection and treatment pipeline, reducing the waste of resources and improving the economic benefits of sewage treatment.

3.2 Improve the sewage treatment system as a whole.

To improve the sewage treatment system, we must proceed from the perspective of the overall development of the city, from the current urban environmental engineering sewage treatment strategy system to the long-term demand of urban environmental engineering sewage treatment, coordinate and handle the contradiction between short-term construction and long-term development, truly establish the urban environmental engineering sewage treatment system, give play to the role of sewage collection pipe network, and maximize the resource optimization and ecological environment construction of urban construction. Therefore, in the construction of urban sewage treatment system, the following work links should be well controlled: (1) Scientific construction of sewage collection pipe network. In the implementation of environmental engineering sewage treatment project, sewage treatment equipment should be operated from the perspective of all-round urban development, effective sewage treatment measures should be formulated in combination with the local sewage treatment status, the original sewage pipe network construction should be upgraded, and sewage collection pipe network construction should be carried out in areas where sewage collection pipe network has not yet been built. (2) Scientifically design the operation process of sewage treatment system and improve the sewage treatment measures. First, review the feasibility report of the project construction, analyze the source and prominent reasons of sewage, and divide the pipe network area and the sewage concentration area by using the sewage treatment method of regional division. Design a scientific and comprehensive operation flow of sewage system, and complete pipeline reconstruction and sewage discharge in strict accordance with the operation flow. (3) According to the feasibility report of sewage treatment mode and the results of regional division feasibility study, design a complete sewage treatment pipe network construction and a scientific and comprehensive system operation process.

3.3 expand the funding channels for sewage treatment projects

In the past, the construction of sewage treatment facilities in urban environmental engineering was paid by the government construction department, which not only increased the financial burden of the government, but also made it difficult to operate well after the implementation of sewage treatment construction projects. In order to scientifically apply the sewage treatment scheme and construct the sewage treatment management system, it is necessary to ensure that the funds for sewage treatment projects are in place, expand the funds channels for sewage treatment projects, and create high-quality conditions for sewage treatment of urban environmental projects. It is an effective channel to introduce social funds and realize urban infrastructure construction by adopting ppp mode to raise funds and carry out urban project planning and construction. According to the new market space of urban sludge disposal in the "Thirteenth Five-Year Plan", the sewage treatment market has a good development space under the background of urbanization in China. Therefore, it is necessary to make urban sewage construction develop scientifically and systematically and make effective use of resources. Bidding can be used to bid for the divided sewage treatment areas. According to the sewage construction and sewage treatment effect of major manufacturers, the best is: first, it can effectively expand the source of funds and improve the sewage treatment effect, which is conducive to the supervision of various sewage treatment links and improve the treatment quality and sewage treatment effect of urban environmental projects in China.

3.4 Improve the technical level of sewage treatment personnel.

To further promote the construction of urban sewage treatment in China, we must ensure the demand for human resources and improve the professional skills and professionalism of employees, so as to effectively solve the problems existing in sewage treatment and fully display the sewage treatment effect. Professional and technical personnel can effectively improve the management level, reach the expected standard of sewage treatment facilities and improve the treatment efficiency of sewage treatment. Therefore, it is necessary to improve the recruitment threshold of sewage treatment practitioners and select talents from a professional perspective. Strengthen the overall level of employees with the improvement of professional quality and sense of responsibility. Provide opportunities for enterprise sewage treatment personnel to learn and communicate, improve the basic management and application level of urban sewage treatment equipment, and bring the quality level of personnel into the sewage treatment supervision system to cultivate innovative technical talents and high-quality management talents.

4 conclusion

The development and perfection of environmental engineering is closely related to the development of economy and urbanization. Due to the chaotic urban planning and construction system in the early stage, the mixed flow of rain and sewage in the urban pipe network has greatly damaged the urban appearance and reduced the level of urban development. In recent years, the development of sewage treatment has attracted much attention, but it still fails to control the deterioration of water pollution and the shortage of water resources. The use function of water bodies in China is gradually declining, which increases the burden of urban development. Improving the sewage treatment effect of urban environmental engineering is the guarantee of standardizing urban construction. Under the implementation of the sustainable development strategy, it is an inevitable trend to realize the efficient utilization of resources. Therefore, doing a good job in sewage treatment of environmental projects can effectively implement environmental protection projects, stabilize urban development and standardize urban construction.

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