Municipal sewage adsorption device

The utility model discloses a municipal sewage adsorption device which comprises a horizontal water tank, a water inlet and a water outlet are formed in the front end and the rear end of the horizontal water tank respectively, an upper guide wall and a lower guide wall are arranged in the horizontal water tank at intervals in the length direction, a guide cavity is formed by the adjacent upper guide wall and lower guide wall, and a mounting hole is formed in the upper end of the horizontal water tank. Each mounting hole corresponds to one flow guide cavity, and an adsorption barrel is detachably mounted on each mounting hole and used for being filled with target filler. The beneficial effects of the utility model are that the detachable adsorption cylinder is arranged, so that the adsorption cylinder can be installed in the idle adsorption water tank, bacteria attached in the adsorption cylinder are domesticated in advance, and after domestication is finished, the adsorption cylinder is transferred to the ins