Resource-circulation-type and eco-friendly livestock manure treatment method using algal biomass, and system for producing algal biomass used therein

A resource-circulation-type and eco-friendly livestock manure treatment method using algal biomass, the method comprising:

• (a) an algae selection step of preparing algae capable of being cultured and proliferating as inoculum;
• (b) a clean culture step of culturing the selected algae in a culture medium in which a livestock liquid fertilizer is mixed with water to produce algal biomass, in an algal biomass production system;
• (c) a feed material production step of harvesting the algal biomass, followed by drying and pulverizing to obtain algal biomass powder;
• and
• (d) a post-treatment step of subjecting the culture medium remaining after harvesting the algal biomass in the clean culture step with water treatment, followed by spraying or discharging,
• wherein in step (b), the algae culture is performed by culturing microalgae, followed by culturing marine algae.