Patent ID: 8920810

Claim:
An algal harvesting system comprising: a floway having a first end and a second end; a first roller at the first end and a second roller at the second end; a belt within the floway, the belt extending from the first end to the second end; a return belt within the floway and beneath the belt, the return belt extending from the first end to the second end and passing around the first and second rollers to connect to the belt at the first and second ends; a drawing cable within the floway, the drawing cable extending from the first end to the second end, passing around a pulley and returning to the first end, the drawing cable being coupled to the return belt; a return cable coupled to the return belt, the return cable having sufficient length to extend at least from the first end to the second end; an algal growth medium on a first surface of the belt; a vacuum at the first end of the floway arranged adjacent to the belt, the vacuum able to remove algal growth on the algal growth medium; and a cable winder at the first end of the floway, the cable winder coupled to the drawing cable and the return cable, wherein, in operation, the cable winder draws the drawing cable thereby drawing the algal growth medium past the vacuum to allow algal growth on the entire algal growth medium to be removed.