Drinking water disinfection treatment device

The utility model relates to a drinking water disinfection treatment device, which comprises a filter tank, a disinfection tank and a chemical dosing device, the filter tank is provided with a first water inlet and a first water outlet, the disinfection tank is provided with a second water inlet and a second water outlet, the first water inlet is externally connected with coagulative precipitation to discharge water, and the first water outlet is communicated with the second water inlet. The device is characterized by further comprising a tail gas treatment tank, an ozone generator, a detector and a controller, the disinfection tank is also provided with an ozone inlet and an ozone outlet, and the ozone inlet is communicated with a gas transmission port of the ozone generator; the tail gas treatment tank is provided with an ozone collection port, the ozone exhaust port is communicated with the ozone collection port, and the control input ends of the detector, the chemical dosing device and the ozone generator