A kind of engineering site sewage treatment method

Abstract

The invention discloses a sewage treatment method on an engineering site, which comprises the following steps: 1) area division; 2) centralized introduction of sewage; 3) confluence treatment of sewage. The invention provides a technical scheme of a sewage treatment method on an engineering site. The structural design is reasonable. By dividing and designing the construction area and the sewage treatment area, the separate operation in the two areas is ensured, and the mutual influence in the two areas is avoided. At the same time Through the design of the confluence device, multiple drainage pipes can be connected at the same time, so that it is convenient to introduce the sewage in the construction area into the sewage treatment area, and realize the subsequent centralized treatment of sewage, and the angle of the pipe block in the confluence device can be adjusted. The design can be adjusted according to the actual terrain and the position of the end of the drainage pipe, which is more convenient for the laying of the connecting pipe, and the confluence device can also perform preliminary filtration treatment of the sewage, so that the turbidity of the sewage entering the treatment tank can reach Certain requirements.

Description

technical field [0001] The invention relates to the field of subway engineering, in particular to a sewage treatment method at an engineering site. Background technique [0002] As an advanced tunnel construction method, the shield method has been more and more widely used due to its incomparable advantages in construction safety, quality, precision, etc., and has become the preferred construction method for urban subway tunnel construction. However, the shield tunneling method is also a construction method that consumes a lot of water. During the shield construction process, a large amount of construction wastewater needs to be discharged. In the existing technology, in the shield construction industry and even the entire construction industry, the construction wastewater is basically directly discharged after simple precipitation, and the purification effect is poor. The recycling rate is basically zero. Moreover, in some shield construction fields, generally the sewage ...

AI Technical Summary

Problems solved by technology

During the shield construction process, a large amount of construction wastewater needs to be discharged. In the existing technology, in the shield construction industry and even the entire construction industry, the construction wastewater is basically directly discharged after simple precipitation, and the purification effect is poor. The recycling rate is basically zero

Moreover, in some shield construction fields, generally the sewage treatment area is directly set in the construction area, which may cause infiltration of pipelines in the sewage treatment area during the subsequent construction excavation process, and when the sewage treatment area in the sewage treatment area When the pipeline leaks, it will affect the work in the construction area

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