Buried combined drainage channel activated carbon adsorption system

The utility model discloses an underground combined drainage channel activated carbon adsorption system which comprises an adsorption shell and an activated carbon adsorption column, the adsorption shell is a matrix of the activated carbon adsorption column, is buried in the drainage channel, is placed in front of the water inlet channel and consists of an adjusting water wall and an adsorption unit; the adjusting water wall is composed of a gate frame, a gate plate and a manual hoist, and the activated carbon adsorption column is of a cuboid structure and is composed of a cover net, a column body, a bottom plate and activated carbon. According to the utility model, each part adopts a modular structure, so that not only can the water volume of the drainage channel be adjusted, but also the amount of adsorbed carbon can be increased or decreased as required, the operations of carbon replacement, backwashing, maintenance and the like are convenient, the purification of pollutants in wastewater and the recovery