Device for treating low-concentration low-calorific-value exhaust gas containing VOCs (Volatile Organic Compounds)

The utility model provides a treatment device for low-concentration low-calorific-value exhaust gas containing VOCs (volatile organic compounds), and belongs to the technical field of waste gas treatment. Specifically, a collecting device is connected with a plenum chamber, a gas outlet of the plenum chamber is sequentially connected with an acid washing tower, an alkaline washing tower and a water washing tower, a gas outlet in the top of the water washing tower is connected with a UV photolysis box through a first pipeline and connected with a biological filter bed through a second pipeline, a first valve is arranged on the first pipeline, and a second valve is arranged on the second pipeline. A second valve is arranged on the second pipeline; the device disclosed by the utility model has multiple functions of exhaust gas collection, safety protection and odor deodorization, so that the treatment process of low-concentration and low-calorific-value odor exhaust gas containing VOCs (Volatile Organic Compound