Environmental monitoring waste gas filtering and purifying tower

The utility model provides a waste gas filtering and purifying tower for environmental monitoring. Comprising a barrel, one side of the barrel is fixedly connected with an air inlet pipe, one side of the barrel is provided with a filter box, a liquid storage tank is arranged in the barrel, a stirring plate is arranged in the liquid storage tank, the upper portion of the liquid storage tank is fixedly connected with a purification pipe, and the upper portion of the purification pipe is fixedly connected with a collection hopper. An annular pipe is arranged on the upper portion of the collection hopper, a purification box is arranged on the other side of the barrel, a liquid return pipe is arranged on the upper portion of the purification box, a liquid pump is arranged on the upper portion of the liquid return pipe, a detection mechanism is arranged on the top of the barrel, an exhaust pipe is arranged on the top of a pump body, and an air return pipe is fixedly connected to the side face of the exhaust pipe. T