A kind of tunnel construction drainage treatment method and its treatment device

Abstract

The invention discloses a tunnel construction drainage treatment method and a treatment device thereof. The treatment device comprises a vacuum diverting device, a lifting pump, a pipe type mixer and a drainage treatment unit; the treatment method comprises the following steps: (a) constructing a regulating basin, a sludge discharge and drainage collecting basin and a monitoring basin in a construction site, starting the vacuum diverting device and the lifting pump, pumping sewage to the pipe type mixer, then flowing into the drainage treatment unit; (b) respectively adding a coagulant and a flocculant into a medicinal liquor dissolving tank, weighing the medicinal liquor through a metering pump and then mixing together with sewage in the pipe type mixture; (c) draining the sewage through the drainage treatment unit, and then flowing in the monitoring basin, detecting the effluent water of the monitoring basin, and draining if the effluent water is qualified and reflowing in the regulating basin if the effluent water is unqualified; and (d) settling and flowing in the sludge discharge and drainage collection basin, standing and layering, enabling a supernatant liquid to flow in the regulating basin, and rinsing and backfilling the settled sludge. The tunnel construction drainage treatment method and the treatment device thereof are high in automation degree, simple and convenient to operate, and stable in the quality of the effluent water.

Description

technical field [0001] The invention relates to the field of industrial sewage discharge, in particular to a tunnel construction drainage treatment method and a treatment device thereof. Background technique [0002] With the development of economy and the needs of daily traffic, the construction of tunnels has increased dramatically. Most of the tunnel projects are located in mountainous and hilly areas, and some are even in drinking water sources or water conservation areas. During the construction process, a large amount of construction drainage will be generated. If the construction drainage is not treated and discharged, it will cause water pollution in mountainous areas. Drainage sources during tunnel construction mainly include the following: water gushing generated when the tunnel passes through unfavorable geological units; sewage generated by construction equipment, such as drilling rigs; sewage used for dust reduction after tunnel blasting and slag removal; shotcr...

AI Technical Summary

Problems solved by technology

If the tunnel construction drainage is discharged directly without treatment, it will not only pollute the surrounding environment, but also cause physical, chemical, ecological, and landscape hazards to the receiving water body

[0003] At present, the drainage generated by tunnel construction is generally settled in a mud sedimentation tank, the supernatant is discharged, and the sludge is dried. This treatment technology is too simple, and its process parameters are unreasonably designed. Second, due to the large fluctuations in the amount of water discharged from the tunnel, the sedimentation tank occupies a large area, the reaction speed is slow, and the quality of the effluent is unstable, so it is impossible to guarantee the standard discharge

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