Practical Application of Constructed Wetland with Ecological Gravel Bed+Broken Stones in the Treatment of Poor Urban Water Bodies
In order to solve the problem of poor urban river water bodies in the northern regions,an amalgamated methodology involving the"Ecological gravel bed+broken stones wetland system"has been implemented.This process facilitates the purification of surface water within wetlands.The outcomes underscore the pronounced efficacy of this approach in ameliorating Class Ⅴ water bodies within northern urban contexts.Noteworthy attributes encompass a robust resistance to impact and mitigation of the influence of winter temperatures on wetland operations.Under conditions where the influent water exhibits COD ≤ 80 mg/L,NH3-N ≤ 3.0 mg/L,and TP ≤ 0.6 mg/L,the system yields average removal rates of 59.54％,60.62％,and 33.42％for COD,ammonia nitrogen,and total phosphorus(TP),respectively.Effluent quality conforms to the prescribed limits for Class Ⅴ water bodies as stipulated in the"Surface Water Environmental Quality Standards"(GB 3838-2002).Consequently,an annual reduction in COD emissions by 1 204.50 tons,ammonia nitrogen emissions by 40.15 tons,and TP emissions by 8.03 tons is achieved,manifesting a conspicuous enhancement of the ecological milieu of the river.
Class Ⅴ poor water bodiesEcological gravel bedPlants broken-stones bed
万方数据
维普
