▎ 摘　　要

NOVELTY - Preparation of easily-separated adsorbent comprises adding magnetic graphene oxide to mixed solution of calcium oxide and silicon dioxide, stirring, separating solid and liquid, and obtaining separated solid substance which is magnetic hydrated calcium silicate adsorbent. USE - The method is for preparing easily-separated adsorbent used for treatment of sewage (claimed). ADVANTAGE - The adsorbent has fast adsorption treatment of pollution ion in sewage comprising cadmium, chromium and/or cobalt with concentration of 100 mg/L-2 g/L, can utilize permanent magnet to adsorb, is convenient for recycling, has simple operation, wide material source and low cost, improves environment and purifies water resource.