The type and scale of the operation have a large effect on what kind of equipment is used in harvesting algae. For microalgae, centrifuges are commonly used to rapidly separate algae cells from water, especially in larger systems. Filtration systems, including membrane filters or screen filters, are also used to capture algae from suspension. In some cases, flocculation tanks are used where agents are added to make the algae clump together for easier collection.
For macroalgae, harvesting is more straightforward and often involves simple cutting tools, nets, or specialized mechanical harvesters designed to gather seaweed growing on ropes or submerged structures. Pumps may also be used to transfer algae-rich water into harvesting tanks or processing units. Once collected, drying racks, dewatering presses, or conveyor systems may be used to remove excess water before further processing..
