Chemical phosphorus removal system for sewage

The utility model provides a sewage chemical dephosphorization system which comprises a water distribution well, adsorption filter tanks, a regeneration system, a reactor and a recycled alkali liquor collector, the adsorption filter tanks comprise two adsorption filter tanks, the water distribution well is arranged in front of the two adsorption filter tanks, the two adsorption filter tanks are filled with adsorption dephosphorization materials, each adsorption filter tank is provided with two water outlets, and the regeneration system is arranged in the water distribution well. One water outlet is connected with the effluent collecting tank, the other water outlet of the adsorption filter tank is connected with the water inlet of the reactor, and the water outlet of the reactor is communicated with the recycled alkali liquor collector; the regeneration system comprises air blowers, a backwash pump and a regeneration liquid tank, the two air blowers are respectively communicated with air inlets at the bottoms