Environment-friendly collection purification system for sewage/wastewater on bridge surface of river-crossing bridge

Abstract

The invention discloses an environment-friendly collection purification system for sewage / wastewater on the bridge surface of a river-crossing bridge. The system includes a collection subsystem and apurification subsystem, and the collection subsystem includes an obliquely intersected open-type flow guiding groove, a U-shaped drainage groove and a water discharge pipe; the obliquely intersected open-type flow guiding groove is formed in the bridge surface of the bridge, the arrangement direction of the flow guiding groove is obliquely intersected with the longitudinal direction of the bridge,the U-shaped drainage groove is formed below a water outlet of the obliquely intersected open-type flow guiding groove, and the upper end of the water discharge pipe is communicated with the end of the U-shaped drainage groove. The purification subsystem includes an adjustment settling pond, an aeration grit chamber, a medicament storage pond, a dangerous medicine temporary storage pond, a settling silt temporary storage pond and an ecological water reservoir; the adjustment settling pond is connected with the lower end of the water discharge pipe, a water inlet control valve is arranged between the adjustment settling pond and the aeration grit chamber, the adjustment settling pond is connected with a municipal sewage disposal system through a pipeline, and the aeration grit chamber is connected to the ecological water reservoir through a pipeline. By means of the system, purification and emergency treatment can be conducted on rainwater, wastewater and liquid dangerous goods on thebridge surface; the guarantee degree is high, the efficiency is high, and the effect is great.

Description

Technical field [0001] The present invention relates to the technical field of bridge engineering, in particular to an environmental protection collection and purification system for sewage / waste water from bridge decks across rivers. Background technique [0002] Under normal circumstances, rainwater from bridges across rivers can be directly discharged into the river through openings on the bridge deck or fence structure on both sides of the bridge. However, for bridges across rivers within the scope of the water source protection area, the rainwater on the bridge cannot be directly discharged into the river. It enters the sedimentation tanks on both sides through the collection system and is discharged after precipitation. [0003] The three rainwater collection methods commonly used in engineering have shortcomings. One is to open a hole through the fence structure on the outside of the bridge as a rainwater outlet, connect the connecting pipes to the hanging pipes on both sid...

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Problems solved by technology

One is to use the openings in the outer fence structure of the bridge as rainwater outlets, connect the connecting pipes to the hanging pipes on both sides of the bridge, and finally transfer them to the onshore rainwater system. This system uses hanging pipes for collection and transfer. The diameter of the hanging pipes varies with As the amount of collected rainwater increases, the pipeline is difficult to install and fix, and affects the overall aesthetic effect of the bridge; one way is to use the cross-sectional space under the sidewalk slab on the bridge deck as a channel for collecting and transferring rainwater on the bridge deck, but this method has a section Problems such as low flow capacity, occupation of power, telecommunications and other professional pipeline laying space, and difficulty in dredging and maintenance; another way is that for the short distance across the river, the project does not consider setting up rainwater collection facilities, and the rainwater is along the longitudinal direction of the bridge deck. Directly flow to both sides of the bank, collect and enter the ground drainage system on the shore through the rainwater outlet near the foot of the bridge or at the end of the approach road. This method is likely to cause water accumulation near the foot of the bridge or the end of the approach road

[0004] At present, the sedimentation tanks on both sides of the bridge are usually set up only with small-scale storage tanks

Due to the high concentration of rainwater pollutants on the bridge deck, the precipitation effect of the general pool is not good, resulting in poor water quality after direct precipitation of rainwater, and direct discharge into the water source will bring certain pollution; for dangerous goods transport vehicles that are accidentally dumped on the bridge , leakage of waste water or toxic and harmful liquids, there is usually no corresponding supporting treatment facilities, or the supporting facilities are not easy to manage and operate, so that the actual use of the bridge deck has the possibility of liquid dangerous goods leaking into, polluting local water sources and polluting water sources and vegetation Larger hidden danger

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