Patent ID: 8574439

Claim:
A valuable resource recovery system comprising: a first engineered powder supply unit that supplies a first engineered powder into drainage water, the first engineered powder being capable of adsorbing a first valuable resource and the first valuable resource being capable of being desorbed from the first engineered powder; an agitation unit that agitates the drainage water supplied with the first engineered powder; a first engineered powder separation unit that separates the first engineered powder from the drainage water agitated by the agitation unit; a first engineered powder collection unit that collects the first engineered powder separated by the first engineered powder separation unit; a desorption-recycle unit that desorbs the first valuable resource from the first engineered powder collected by the first engineered powder collection unit to recycle the first engineered powder and the first valuable resource; a precise capture device that is provided on a drainage side of treated water downstream of the first engineered powder separation unit and captures the first engineered powder that has not been separated from the drainage water and remains in the treated water, the drainage water having been separated into the first engineered powder and the treated water by the first engineered powder separation unit; a pipe for directing drainage water from an outlet of the agitation unit to an outlet of the precise capture device to backwash captured first engineering powder from the precise capture device; and a backwashing collection cartridge separate from the first engineering powder collection unit that collects the first engineered powder backwashed from the precise capture device.