▎ 摘　　要

NOVELTY - The water-treatment apparatus has a first filtration portion (10) that filters the raw water flowed in and ejects the first processing water and the first enriched water. A second filtration portion (30) filters the first processing water flowed in and ejects the second processing water and the second enriched water. A oxide graphene contact unit (50) filters the first enriched water and the second enriched water flowed in with the filtering element and produces the third processing water. USE - Water-treatment apparatus. ADVANTAGE - The enriched water is collected and enriched water treatment level is improved. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for water treatment method. DESCRIPTION OF DRAWING(S) - The drawing shows a structural view of the water-treatment apparatus. (Drawing includes non-English language text) First filtration portion (10) Second filtration portion (30) Oxide graphene contact unit (50) First pipe (L1) Second pipe (L2)