The first all underground sewage treatment plant i
2022-10-20- Detail
The first all underground sewage treatment plant in Shaanxi Province was officially put into operation recently, Xi'an No. 3 sewage treatment plant, the first all underground sewage treatment plant in Shaanxi province contracted by CSCEC, was officially put into operation. This ingeniously constructed "underground city" located 18 meters underground will thoroughly "clear the source" of the city. In order to improve the sewage treatment capacity of 100000 cubic meters per day to the original sewage treatment plant with 50 product labels, which was annotated as early as November 2016, the long-term treatment scale will reach 300000 cubic meters per day
the project is all underground construction, and the foundation pit is 17.4 meters deep. During the construction process, the project team combined the construction plan to optimize the underground space in multiple dimensions to form a three-dimensional layout; By optimizing the process flow, reorganizing the unit clusters, and modifying the layout of structures, the space utilization efficiency was improved, and the land occupied by the project was reduced by two thirds; In order to reduce the concentration of odor in the process of sewage treatment, the spatial layout is becoming more and more reasonable. The project team set up independent mechanical exhaust and mechanical air supply or fire shutter air inlet systems in the box to ensure that the space in the process treatment workshop and pipe gallery area is in a micro negative pressure state to prevent odor overflow
after the completion of the project, the effluent quality can reach the national class IV standard for surface environmental quality. The treated water can be treated nearby and reused on site. One part is directly used for the landscaping of aboveground parks, and the other part is introduced into the tank by the Babbitt metering tank. At this time, the oil cylinder slowly falls back to the washing tank, the return tank and the fire water tank for washing fine grids and membrane grids, It not only reduces the pipe input and operation cost, but also beautifies the plant environment and realizes green and recyclable development
original title: the first all underground sewage treatment plant in Shaanxi Province was officially put into operation
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