An　orthogonal　test　was　designed　to　explore　the　appropriate　preparation　of　granular　adsorbents　for　arsenic　removal　based　on　the　backwashing　residuals　from　deironing　and　demanganization　granular　adsorbents　for　arsenic　removal(GAAR).　The　structure　of　granulars　was　analyzed　by　SEM-EDS　microscopy,　X-ray　powder　diffraction　and　nitrogen　adsorption　analysis　for　specific　surface　area,　respectively,　and　the　arsenite　removal　efficiency　was　also　analyzed.　The　results　show　that　the　best　calcination　condition　is　that　the　pre-heat　temperature　is　180,　pre-heat　time　is　20　min,　calcination　temperature　is　350　and　calcination　time　is　120　min.　Calcination　temperature　is　the　main　factor　impacting　arsenic　removal.　The　higher　calcination　temperature　leads　to　the　more　hematite　generated　in　the　granular　adsorbent,　and　makes　the　surface　area　decline　and　enlarges　the　average　pore　size.　GAAR　is　a　kind　of　mesoporous　material　(the　surface　area　is　43.　8　m2/g),　with　small　fractions　of　hematite　and　quartz.　Arsenate　adsorption　on　GAAR　can　be　described　by　pseudo-second-order　kinetic　equation　and　the　Freundlich　isotherm　equation.　The　maximum　adsorption　capacity　for　arsenite　of　GAAR　is　4.77　mg/g.　©　2018,　Central　South　University　Press.　All　right　reserved.