Low-concentration VOCs treatment system

The utility model belongs to the technical field of volatile organic compound treatment, and relates to a low-concentration VOCs (volatile organic compounds) treatment system which sequentially comprises a filter, a primary condenser and a cryogenic device from front to back, an inlet of the filter is communicated with the outside through an inlet pipe, and an outlet of the filter is communicated with a gas inlet of the primary condenser through a pipeline; a gas outlet of the primary condenser is communicated with an inlet of a cryogenic device through a cryogenic pipeline, an outlet of the cryogenic device is communicated with an induced draft fan through a pipeline, and the induced draft fan is communicated with the external environment; a liquid outlet of the primary condenser is communicated with the oil-water separation mechanism through a liquid pipeline. According to the system, organized or unorganized low-concentration VOCs can be well treated, incineration is not needed, the treatment cost is low,