▎ 摘　　要

NOVELTY - A water treatment device comprises a container tank, and a graphene filter core comprising spherical graphene having a grain diameter of 1-6 mm, arranged in the container. USE - Device is used for treating tap water and converting water to hydrogen peroxide (all claimed) used for sterilizing fruits and vegetables, and sanitary use in females. ADVANTAGE - The device enables production of nontoxic hydrogen peroxide, which causes no side effects. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for water treatment method.