| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for collecting microalgae which can collect the microalgae having hydrocarbon productivity in the state that the microalgae is suitably available as an additive for feed or a food additive from a cultivation solution containing specific microalgae having hydrocarbon productivity without using a coagulant including aluminum, toxic high polymer, and the like.SOLUTION: Raw water W, which contains the specific microalgae having hydrocarbon productivity, is introduced into a pH adjustment flocculation tank 1, and then, soluble metal salt, which generates insoluble hydroxide, is added to be adjusted to a predetermined pH. Subsequently, an aggregated flock, which is generated in the aggregation process, is separated into the aggregated flock and treatment water by a solid-liquid separation tank 2. |
