Recovery system and recovery method for aerial fog spraying chromium-free passivation solution

The invention relates to a recovery system of an aerosol spraying chromium-free passivation solution, which comprises a passivation solution preparation tank, a passivation solution collection tank, a passivation solution separation tank, a passivation solution aerosol nozzle, a passivation solution interception mechanism, a redundant passivation solution collection mechanism, a passivation solution collection box, a spraying pressure pump and a filter, the passivation solution preparation tank is connected with the passivation solution aerial fog nozzle through the filter and the jet pressure pump, the passivation solution interception mechanism is arranged between the passivation solution aerial fog nozzle and the tinned plate, the redundant passivation solution collection mechanism is arranged opposite to the passivation solution interception mechanism and the tinned plate, the redundant passivation solution collection mechanism is connected with the passivation solution collection box, and the redundant p