Backwashing　sludge　is　an　efficient　adsorbent　for　arsenic　removal.　However,　considering　the　practical　application,　it　is　unfavorable　for　solid-liquid　separation.　To　overcome　this　disadvantage,　a　high-temperature　baking　method　was　used　to　prepare　a　granular　adsorbent　(GA)　with　iron-manganese　sludge,　along　with　an　embedding　method　with　drying　(H-GA)　and　lyophilization　(D-GA).　The　characterization　results　showed　that　the　surface　of　the　three　adsorbents　were　rough,　with　specific　surface　areas　of　43.830,　110.30,　and　129.18　m2•g-1,　respectively.　The　adsorption　experiments　showed　that　the　adsorption　of　arsenic　by　H-GA　and　D-GA　was　much　higher　than　that　of　GA.　The　maximum　adsorption　capacities　of　GA,　H-GA,　and　D-GA　were　5.05,　14.95,　and　13.45　mg•g-1,　respectively.　The　Langmuir　model　fit　the　adsorption　process　of　arsenic　by　H-GA　and　D-GA　better,　whereas　the　Freundlich　model　fit　the　adsorption　process　of　GA　better.　The　Pseudo-first　order　model　and　Pseudo-second　order　model　were　suitable　to　describe　the　kinetic　curves　of　the　three　adsorbents.　The　acidic　environment　was　more　conducive　to　the　adsorption　of　arsenic.　The　particle　adsorbents　prepared　by　the　embedding　method,　H-GA　and　D-GA,　retained　the　original　structure　of　iron-manganese　sludge,　and　the　specific　surface　area　was　much　larger　than　that　of　GA;　thus,　the　adsorption　capacity　was　greater　than　that　of　GA.　Drying　and　lyophilization　had　no　significant　effect　on　the　adsorption　performance　of　granular　adsorbents　prepared　by　embedding.　©　2019,　Science　Press.　All　right　reserved.