Fly ash harmless treatment resource recycling device and treatment method

The invention relates to a fly ash harmless treatment resource recycling device and treatment method, which includes a solid-phase catalytic dechlorination and detoxification and dioxin removal system connected in sequence, a three-stage water elution and desalination system for waste incineration fly ash, and a heavy metal removal system , membrane distillation concentration system and salt crystallization system; solid-phase catalytic dechlorination and detoxification removal system to remove dioxins from fly ash; waste incineration fly ash three-stage water elution salt system will remove dioxins from fly ash A large amount of salt is removed, and there are still some heavy metal residues in the three-stage water washing filtrate after washing; the heavy metal removal system removes a large amount of calcium and magnesium ions and a small amount of heavy metal ions contained in the three-stage water washing filtrate, and obtains the supernatant after removing heavy metals; The membrane distillation concentration system distills the supernatant to produce water for reuse, and generates a concentrate; the salt crystallization system evaporates and crystallizes the concentrate to obtain 7% crystalline salt and condensed water. The invention can harmlessly treat the fly ash and realize resource utilization.