The present invention relates to the use of an acidic mine drainage containing anions such as iron, aluminum cations and sulfates contained in mineral wastewater or calcium and magnesium cations to remove biomass The present invention relates to a method for efficiently recovering a wastewater, which can reduce the cost of harvesting microalgae by utilizing waste resources, can purify water quality by removing phosphorus, can reuse wastewater for cultivation, Can be used as a raw material for bio-energy and a soil remediation agent, the recovery method according to the present invention is an environmentally friendly flocculation and culture method capable of simultaneously bringing about various effects.
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