Backwashing　sludge　of　groundwater　treatments　for　iron　and　manganese　removal　is　an　effective　adsorbent　to　remove　arsenic　from　water.　Still,　it　isn＇t　easy　to　apply　in　practice　due　to　its　powder　form.　A　new　type　of　granular　adsorbent　(GA)　was　prepared　by　using　this　sludge　as　raw　material.　GA　was　prepared　by　adding　a　homogeneous　solution　of　iron　sludge　and　chitosan　into　NH4OH　solution　with　a　separatory　funnel　and　pipette　tip.　GA　has　a　high　sorption　capacity　of　14.95　mg/g　As(V)　determined　by　the　Langmuir　model.　And　the　dynamic　filtration　experiment　was　conducted　by　filling　the　GA　in　the　plexiglass　column.　The　experimental　results　show　that　the　adsorption　capacity　of　the　filter　column　increased　with　the　increase　of　bed　depth,　while　the　unit　adsorption　capacity　decreased.　When　the　bed　depth　was　15　cm,　the　total　and　unit　adsorption　capacities　were　10.755　mg　and　0.779　mg/g,　respectively.　In　comparison,　when　the　bed　depth　was　60　cm,　the　adsorption　capacity　was　20.405　mg,　and　the　unit　adsorption　capacity　was　0.370　mg/g.　When　the　bed　was　in　the　midst　of　30,　45,　60　cm,　the　breakthrough　time　was　13　h,　100　h,　200　h　at　EBCT　of　9　min,　18　min,　and　37　min,　respectively.　The　NaOH　solution　with　a　1%　concentration　was　continuously　injected　to　regenerate　the　exhausted　GA　filter　column,　and　the　desorption　rate　reached　25.8%.　After　regeneration,　the　adsorption　capacity　of　GA　was　slightly　decreased,　and　the　GA　column　still　had　good　As(V)　removal　performance　with　Re%　above　90%.　The　Thomas,　Adams-Bohart,　YoonNelson　models　were　used　to　fit　the　experimental　data,　and　the　Yoon-Nelson　model　was　proved　better　to　describe　the　breakthrough　curves.　GA　column　has　a　more　commendable　adsorption　capacity　compared　to　some　other　adsorbents.　This　study　not　only　resourcefully　utilizes　waste　iron　sludge　but　also　represents　a　step　forward　in　investigating　the　possibility　of　extending　iron　sludge　adsorbents　from　batch　to　fixed　bed　adsorption.