Clean water and sewage separate two-stage drainage system of bridge

Abstract

The invention relates to a clean water and sewage separate two-stage drainage system of a bridge. An upper release pipe and a lower release pipe are connected in a sleeved mode, and the lower release pipe is communicated with a longitudinal drainage pipe. A longitudinal slope is arranged on the longitudinal drainage pipe, and the bottom of the longitudinal slope is connected with a sewage treatment system. A tee joint with a water outlet upwards inclined is arranged on the longitudinal drainage pipe, the bottom of the water outlet in the tee joint is higher than the bottom of the longitudinal drainage pipe at the corresponding position, and the height difference is namely a water level limit value. The end of the water outlet in the tee joint, with the water outlet upwards inclined, arranged on the longitudinal drainage pipe is connected with a vertical drainage pipe through a hose. By the adoption of the clean water and sewage separate two-stage drainage system, at the early stage of a heavy rain and when a moderate rain and a light rain occurs or other bridge deck sewage occurs, the water level is lower than the bottom of the water outlet in the tee joint, and accumulated water flows into the sewage treatment system only through the longitudinal drainage pipe. When the water level is higher than the bottom of the water outlet in the tee joint, a part of the accumulated water flows into the sewage treatment system through the longitudinal drainage pipe, and the other part of the accumulated water flows into the vertical drainage pipe through the tee joint to be drained. The clean water and sewage separate two-stage drainage system can drain kinds of bridge deck accumulated water in time and reduce loads of the drainage system, the sewage treatment system and the bridge.

Description

technical field [0001] The invention relates to a bridge clean water and sewage diversion discharge system, in particular to a two-stage drainage system for bridge clean and sewage diversion. Background technique [0002] The drainage system of existing bridges is generally divided into direct drainage and centralized drainage. Direct drainage is to discharge the bridge surface water directly to the bridge, also known as scattered drainage; centralized drainage is to discharge the bridge surface water to a fixed location for centralized treatment. The structure of the direct drainage is simple and the construction is convenient, but the sewage on the bridge deck is likely to have an impact on the surrounding environment. Centralized drainage collects the water on the bridge to avoid pollution of the surrounding environment of the bridge. However, in the case of extra-large bridges under heavy rain, a large amount of water on the bridge increases the load on the drainage, se...

AI Technical Summary

Problems solved by technology

The structure of direct drainage is simple, and the construction is convenient, but the sewage on the bridge deck is easy to affect the surrounding environment

Concentrated drainage collects the water on the bridge to avoid pollution of the surrounding environment of the bridge. However, in large bridges under heavy rain, a large amount of water on the bridge increases the load on drainage, sewage treatment systems and bridges.

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