Research On Biological Purification Of Road Surface Runoff Pollution

With the fast growing of highway construction scale,the gradual improvement of highway network and the constant increase of the total mileage of highway in China,the environmental problem brought by the process of road construction and later operation becomes vigilant.including the novel and well treatment effect road surface treatment.The article has researched and analyzed the biochemical pool treatment effect of road surface runoff in highway pavement comprehensive treatment system.In this article,we have observed the effect of purification effect of yellow flag and foxtail to water quality purification function and the two plants’ cold hardiness,pollution resistibility through the test,combined the two plants and study the treatment effect of plant to sewage after combination and the influence of combination of plant density differences to the treatment effect and compared the influence of study concentration and detention time to plant water purification effect through adding different concentrations of sewage and the sewage’s detention time.Through the test,we have observed the purification effect of yellow flag and foxtail,and the two plants’ cold hardiness and pollution resistibility.Then we combined the two plants and studied the treatment effect of plants to sewage after combination and the influence of combination of plant density differences to the treatment effect.By adding different concentrations of sewage and the sewage’sdetention time,we compared the influence of concentration and detention time to plant water purification effect.We have comprehensively evaluated the biochemical pool in the aspect of planting density,composite effect and treatment effect etc.to supplement the overall treatment of the road surface treatment system and provided a more comprehensive treatment plan about road’ surface runoff treatment measures,resulting in a more effective solution about the road surface runoff pollution problem.