Discussion on runoff purification technology of highway bridge deck based on water quality safety

Sheng-Guang Tan,Guo-Ping Zou,Shuang-Cheng Tao,Xin-Zhu Xiong,Xue-Xin Liu,M Mostafa

doi:10.1051/e3sconf/20183803043

Abstract

Aiming at the actual problems existing, including a poor purification effect of highway bridge runoff collection and treatment system across sensitive water and necessary manual emergency operation, three kinds of technology, three pools system of bridge runoff purification, the integral pool of bridge runoff purification and ecological planting tank, are put forward by optimizing the structure of purification unit and system setting. At the same time, we come up with an emergency strategy for hazardous material leakage basing on automatic identification and remote control of traffic accidents. On the basis of combining these with the optimized pool structure, sensitive water safety can be guaranteed and water pollution, from directly discharging of bridge runoff, can be decreased. For making up for the shortages of green highway construction technology, the technique has important reference value.

Highlights

With the rapid development of highway construction, frequent traffic activities have raised more attention to the problem of road surface runoff pollution
The pollutants in road surface runoff mainly comes from the wear particles of vehicle tires and road materials, the leakage of hazardous goods in delivery, the particulate matter of snowmelt agent generated from auto parts, the pollutants in rainwater and the atmospheric dust-fall, and the erosion of road surface sediment by rainwater. [1]-[4]
The greatest potential danger to the water body lies in the serious pollution caused by the leakage from carriage of dangerous goods (CDG) due to accidents or some inner factors [5]-[6]

Summary

Introduction

With the rapid development of highway construction, frequent traffic activities have raised more attention to the problem of road surface runoff pollution. There was a long-term presence of sedimentation tank in the full state, resulting that tanks failed to play a role in the hazardous good leakage accident In response to this kind of problem, researchers began to try to introduce some self-control measures into the bridge runoff emergency management system. Based on the considerations above, the bridge runoff purification emergency three-tank system was developed It consists of a storage regulation tank, an oil separation sedimentation tank, an emergency storage tank and a monitoring control system. When there is no leakage of hazardous chemicals, the runoff of bridge deck flows into the oil separation sedimentation tank through the electric butterfly valve which is normally opened. This kind of technology has been applied to Heda Expressway in Jilin Province

Bridge runoff purification emergency ecological planting groove Based on LID

Conclusions