In　order　to　solve　the　problem　of　seasonal　pollution　of　reservoir　water　by　taste　and　odor　caused　by　algae,　the　adsorption　kinetics　and　isothermal　adsorption　modeling　of　2-methylisoborneol　(2-MIB)　by　powdered　activated　carbons　(PAC)　in　different　water　quality　were　studied,　and　the　adsorption　effects　of　organic　matter　in　two　kinds　of　reservoir　water　were　investigated.　Results　showed　that,　in　the　range　of　test　concentration,　the　adsorption　processes　followed　pseudo-second-order　kinetics　equation　and　the　modified　Freundlich　equation　in　pure　water,　raw　water　A　and　B,　and　the　adsorption　rate　and　adsorption　capacity　reduced　in　turn.　The　adsorption　capacity　decreased　significantly　in　raw　water　A　and　B,　but　the　adsorption　potential　energies　of　2-MIB　on　activated　carbon　in　raw　water　B　was　stronger　than　that　of　raw　water　A,　due　to　the　micropore　competitive　adsorption　and　polarity　caused　by　the　reservoir　water　of　small　organic　molecules　with　relative　molecular　weight　of　＜500　u.　©,　2015,　Beijing　University　of　Technology.　All　right　reserved.