Standard for municipal industrial sewage pipe
There was no specific information about the standards for urban industrial sewage pipes. Therefore, he could not provide an accurate answer.
Municipal sewage interception pipe
The municipal sewage interception pipe was a water pollution treatment project. By constructing and transforming the sewage pipeline inside the sewage generating unit and connecting it to the sewage pipeline system under the town road, the sewage was finally transported to the sewage treatment plant for central treatment. This project played an important role in urban sewage treatment. The goal of the sewage interception project was to intercept and concentrate sewage to reduce pollution to rivers and water bodies. In order to achieve this goal, it was necessary to dismantle the original sewage treatment facilities, renovate and build sewage pipes, and strengthen the sewage collection and treatment capacity. In addition, the sewage needed to be pre-treated to ensure that the sewage reached a certain treatment standard before entering the municipal sewage pipe network. The implementation of the sewage interception project required the investment and support of the government. At the same time, it was necessary to establish a corresponding work system and assessment mechanism to ensure the smooth progress of the project. At present, some cities have begun to implement sewage interception projects and have achieved certain results. However, there were still some problems in the implementation process, such as old and damaged pipe network, sewage overflow, etc., which needed to be further solved. In general, the municipal sewage interception pipe was an important water pollution control project, which had positive significance for improving the quality of the urban water environment.
Municipal pipe network construction
The construction of a municipal pipe network project is a complicated process that covers many aspects. The following is a detailed introduction: ##I. Pre-construction preparation 1. ** Engineering geological and geological survey ** - For areas with heavy rainfall, engineering geological and geological data are of utmost importance. The soil layer infiltration coefficient used must be reliable. If necessary, it needs to be determined by field pumping test. - In complex soil layers, supplementary survey shall be conducted according to the requirements of rainfall, and the corresponding aquifer and impervious layer, the recharge relationship of underground water, the main aquifer and the substratum shall be identified. 2. ** Construction Equipment and Materials ** - Confirm the structure, length and quantity of the well point pipes, the model and quantity of the pumping machinery (including the spare capacity of the pump and the motor), and set up dual power sources if necessary. - Prepare all kinds of pipeline materials required for construction, such as water supply pipeline, drainage pipeline, gas pipeline, heat pipeline, etc., and ensure that their quality meets the requirements of the project. 3. ** Construction drawings and plans ** - Draw the plan and profile layout and installation drawings of the well point drainage system, specify the sinking method of the well point pipe, the burial of the drainage ditch management and the selection of drainage location, etc. - Formulate measures to prevent surface water and rainwater from entering the trench, as well as protective measures at the intersection of the well point pipeline and the construction road. ##2. Construction process ###(I) Earthwork 1. ** Trench and foundation pit excavation ** - The excavation must be carried out according to the calculation rules of the trench earth and stone. Where the width of the bottom of the trench shown in the diagram (excluding the widened working face) is less than 5m, and the length of the bottom of the trench is more than three times the width of the bottom, the trench project shall be implemented; where the area of the bottom of the trench shown in the diagram (excluding the widened working face) is less than 50m2, and the long side is less than three times the short side, the foundation pit project shall be implemented; in addition to the above provisions, the leveling project shall be implemented. - The slope of trench and foundation pit shall be calculated according to the slope coefficient required by the design or construction organization design. If there is no regulation, it can be calculated according to the relevant standard table. During the calculation of the earth slope, the repetitive work volume at the junction shall not be deducted. The original trench foundation cushion layer shall be calculated from the upper surface of the cushion layer. - The width of the foundation, pipeline and pipe network trench shall be calculated according to the design regulations. If there are no design regulations, the bottom width of the pipeline trench without foundation (cushion) shall be calculated according to the width of the working faces on the other two sides of the pipeline outer diameter; the bottom width of the pipeline trench with foundation (cushion) shall be calculated according to the width of the foundation (cushion) plus the width of the working faces on both sides; the bottom width of the trench supporting the retaining board shall be calculated according to the above regulations, and 0.1m shall be added to each side. 2. ** Earthwork Transportation and Backfilling ** - Backfilling volume of trenches and pits = excavation volume-volume of buried components; Backfilling volume of trenches = excavation volume-volume of pipes with a diameter of more than 500mm and volume of buried components. - The volume of the backfilled soil and rock dregs shall be calculated in cubic meters according to the volume of the filled area after being compressed; the volume of the remaining transportation = the volume of excavation-the volume of the backfilled area. ###(II) Pipeling Project 1. ** Pipeling installation ** - Different types of pipes had different installation requirements. For example, the water supply pipeline had to ensure the supply of domestic water, production water, fire water, and municipal green and spraying water for the city, including the installation of water transmission pipeline and water distribution network. - The installation of the drainage pipeline should realize the purpose of timely collection of urban domestic sewage, industrial waste water and rainwater, and transport the domestic sewage and industrial waste water to the sewage treatment plant for treatment and discharge, and discharge the rainwater nearby. - The gas pipeline was responsible for distributing the gas from the gas distribution station to various users for their use; the thermal pipeline was used for heating, and there were hot water pipes and steam pipes; the power cable was used to transmit electricity to the city. It was classified according to its function and voltage, and the installation had to follow the corresponding specifications. 2. ** Production and installation of pipe fitting and steel support, and connection of new and old pipes ** - The installation of the pipe fitting must ensure that the connection is tight and meets the pressure and flow requirements of the piping system. The steel support must be strong and stable enough to support the weight of the pipeline and the stress during operation. - When connecting the old and new pipes, pay attention to the connection process to ensure the safety and reliability of the overall operation of the connected pipeline system. ###(3) Anciliary facilities project 1. ** Construction of inspection wells and water wells ** - The construction of inspection wells and water wells must be carried out according to the design requirements, including their size, structure, materials, and so on. They play a role in inspecting, maintaining, and regulating the water flow in the pipe network system. 2. ** Gutter Project ** - The direction and slope of the drainage ditch project should be reasonably planned to ensure smooth drainage and prevent water accumulation from affecting the operation of the pipe network. ##3. Special Requirements During Construction 1. ** Well Point Rainfall Requirements ** - During transportation, loading, unloading, and stacking of the well point filter tubes, the filter screens shall be prevented from being damaged. Before running into the well point holes, the filter tubes must be checked one by one to ensure that the filter screens are in good condition. - It is required to start the drainage 2 - 3 weeks before the excavation of the foundation pit, so that the soil has a certain degree of drainage and consolidation during excavation. After the start of the drainage, the water level of the water level observation pit buried inside and outside the foundation pit shall be regularly measured to ensure that the drainage depth meets the requirements. The depth of the water level drop of the underground water observation well outside the foundation pit shall not be greater than the environmental protection requirements. - In order to reduce the impact of well point drainage on the surrounding environment, recharge well points, recharge sand wells and sand ditches can be set between the drainage pipe and the protected object. 2. ** Other considerations ** - During construction, take soil samples to check the range of the aquifer and the composition of soil particles. During the process of forming holes, check the straightness of the holes in time and measure the depth of the holes after they are formed. - The well point pipe must be cleaned before it is put down. The position of the well pipe should be within the range of the stratum where water needs to be pumped, and the sand filter material should be filled around the well pipe. The sand filter material can also be placed on the specified length of the well pipe in advance before the well pipe is put down. When in use, the upper part of the well hole is sealed with a soil layer, and water is pumped immediately after the well pipe is buried to extract the powder and clay particles in the filter material, so as to ensure that the filter layer has good water penetration and the pumping effect of the well point. - Before filling the sand, the mud in the hole should be diluted appropriately, the well pipe should be in the middle, and the filling height should not be less than 95% of the calculated value. - The water quality of the pumping water is turbid, and the reason should be analyzed in time to prevent the ground from sinking due to the loss of mud and sand. The maintenance and inspection of the well point system should be strengthened to ensure that the well point can pump water normally and continuously. The pumping records should be made in detail. ##4. Post-construction Recovery 1. ** Road and sidewalk restored ** - After the completion of the pipe network construction, the road surface and sidewalk damaged during the construction process should be restored to the function and appearance before the construction.
Intercepting sewage pipe technology
The sewage interception technology was a water pollution treatment project. By constructing and transforming the sewage pipeline inside the sewage generating unit and connecting it to the sewage pipeline system under the city road, the sewage was transported to the sewage treatment plant for treatment. This technology was the most direct and effective engineering measure in the treatment of black and smelly water bodies, and it was also the premise of other technical measures. The sewage interception pipe could control the discharge of sewage within the city, including sewage outlets, rainwater pipe outlets, etc. It laid sewage interception pipeline along the river and lake, and reasonably set up pumping stations to intercept the sewage and incorporate it into the urban sewage collection and treatment system. The implementation of the sewage interception pipe project needed to consider the elevation of the overflow device's discharge outlet and the water level of the water body, and set up a non-return device to prevent reverse flow during heavy rain. However, the implementation of the sewage interception and management project faced some limiting factors, such as the large amount of work and one-time investment, the difficulty of project implementation, and the long period. In addition, the sewage entering the sewage treatment plant after intercepting the sewage pipe may cause greater operating pressure on the existing urban sewage system and sewage treatment plant, so bypass treatment may be needed.
The significance of the domestic sewage pipe project
The significance of the domestic sewage pipe project was to improve the water environment in urban and rural areas, improve the sewage treatment capacity, protect water resources, and promote sustainable development. This project could improve drainage efficiency, reduce urban waterlogging problems, and improve the urban living environment. At the same time, it could also purify the water environment and reduce the pollution caused by the direct discharge of urban and rural domestic sewage into the water body. In addition, the domestic sewage pipe project could also eliminate black and smelly water bodies, improve the aquatic ecological environment, and reduce the entry of nutrients into the water. For society, a complete sewage pipe network was not only conducive to improving the city's functions and upgrading the city's quality, but also to improving the living environment of residents, improving the happiness index of the people, and meeting the growing needs of the people for a healthy and beautiful ecological environment. Therefore, the domestic sewage pipe project was considered an important livelihood project, which had positive significance for social stability and urban development.
Integrated sewage discharge standard level 3 standard
The Level 3 standard of the comprehensive sewage discharge standard referred to the sewage discharged into the urban drainage system of the secondary sewage treatment plant. The Level 3 standard was implemented.
Standard grade of sewage treatment
The sewage treatment standards were divided into Level 1, Level 2, and Level 3. According to the Integrated Waste Water Discharging Standard, the first-class standard was applicable to the discharge of sewage into Class III water areas (except for designated protected areas and swimming areas) and Class II sea areas in Class B. The Level 2 standard is applicable to the discharge of sewage into Class IV and V waters in the standard of the national standard 3838 and Class III sea areas in the standard of the national standard 3097. The Level 3 standard was applicable to the situation where the sewage was discharged into the urban drainage system with a secondary sewage treatment plant. The specific standard values and requirements may vary by region and industry.
Integrated sewage discharge standard class I standard
There were two different descriptions of the first-class standard of the integrated sewage discharge standard. According to documents [4] and [9], the Level 1 standard refers to the water quality of the discharged sewage after treatment reaching Level A of the Level 1 standard. The water quality is required to be clear, transparent, colorless, odorless, free of suspended substances, odor, and impurities, and meet the hygiene standards for drinking water. According to document [2] and document [3], the first-level standard refers to the sewage discharged into the Class III water area of the national standard 3838 (except for the designated protected areas and swimming areas) and the sewage discharged into the Class II sea area of the national standard 3097. Due to the inconsistent descriptions in the search results provided, it was impossible to determine which description was the specific first-level standard.
Municipal sewage treatment plant operation management e-book
The following are some e-books related to the operation and management of urban sewage treatment plants: - Operation and Management of Small Town Waste Water Treatment Plants, co-written by Li Yafeng, Ma Xuewen, and Liu Qiang, published by the Chemistry Industry Press on June 1, 2011. - "Waste Water Treatment Plant Operation Management Training Course," published by the chemical industry press in 2005. The authors were Cao Yu and Wang Enrang. - "Operation and Management of Municipal Waste Water Treatment Plants (3rd edition)", published by Li Yafeng in the chemical industry. The content mainly involved the basic knowledge of municipal waste water treatment and the operation and management of the treatment structures of municipal waste water treatment plants. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Causing the sewage to flow
There were many reasons for the overflow of sewage. The following were some of the possible reasons: 1. Failure of the sewage treatment facilities of the enterprise: The failure of the sewage treatment facilities of a paper factory caused the sewage to not be treated, and the sewage flowed into the nearby water body. 2. [Sewer blockage: The sewers of a certain residential area are blocked by oil, causing the sewage to not be discharged normally and flow into the residential area.] 3. [Blocked sewage pipe: The sewage pipe of a certain residential area is blocked, causing sewage to leak from the floor to other floors or corridors.] 4. Septic tank and drainage pipe facilities are old: The facilities of the manure tank and drainage pipe in the old community are old, and it is easy to cause blockage and sewage crossflow. 5. Waste water overflow in car wash shops: When some car wash shops wash cars outdoors, the sewage will flow onto the sidewalk, affecting pedestrians. It should be noted that the above are only some possible reasons. The specific situation may vary according to the region and environment.
rural domestic sewage
The rural domestic sewage referred to the polluted water produced by rural residents in their daily lives, mainly including toilet sewage, kitchen sewage, bathing sewage, and livestock sewage. The main characteristics of rural domestic sewage are high dispersion and difficult to collect uniformly; small amount of water, but large fluctuation of water, with obvious seasonal changes; high concentration of organic matter, but no harmful substances; water quality and water volume vary greatly in different regions. The problems of rural domestic sewage treatment included imperfect governance mechanism, lack of focus on governance, unreasonable evaluation of governance effectiveness, and unscientific governance model. In recent years, China has taken a series of measures to promote rural domestic sewage treatment, but it still faces challenges in terms of standards, technology, funding, and mechanisms.