Are drum, disc and belt filters effective for algae harvesting? 

"Belt-press seems to be comparatively cheaper than other harvesting methods. The costs of the belt-filters range from between between $150,000 to $180,000 each. Capital costs for belt filter presses vary with the size of the equipment. Vendor estimates vary from $47,500 (0.5 m belt, approximate capacity of 500 dry pounds per hour (~0.22679618499999998 tons)) to $115,000 (1.5 meter belt with approx capacity of 1,625 dry pounds per hour)" 

Read more at -