Sewage　sludge　is　a　kind　of　semi-dry　solid　waste　with　high　moisture　content,　a　large　number　of　organic,　toxic　and　harmful　substances.　Exploring　new　ways　of　sludge　treatment,　disposal　and　utilization　has　important　significance　in　solving　the　problem　of　sludge　pollution.　Due　to　the　increasing　demand　of　activated　carbon,　the　high　carbon　content　of　sludge,　and　sludge　readily　available,　preparing　activated　carbon　with　sludge　can　help　sludge　utilization　and　gas　purification.　Sludge　activated　carbon　was　produced　in　the　laboratory　using　wastewater　sludge　and　zinc　chloride　was　used　as　a　sludge　activation　agent　during　the　activation　process.　Its　structure　and　adsorption　ability　was　characterized　by　BET.　The　activation　temperature,　the　activation　time,　and　activation　agent　concentration　were　chosen　as　three　impact　factors.　The　optimal　operating　conditions　were　determined　through　orthogonal　experiment.　The　iodine　numbers,　SEM,　XRD　and　heavy　metal　content　were　measured.　The　results　show　that　the　optimal　conditions　are　3　mol/L　ZnCl2-immersed　sludge　activated　at　450　degrees　C　for　30　min.　And　the　sludge　activated　carbon　produced　in　the　optional　conditions　has　BET　299.59　m(2)/g,　macropore　volume　0.53-0.58　cm(3)/g,　mesopore　0.1365-0.1986　cm(3)/g,　micropore　volume　0.2991-0.5623　cm(3)/g,　obviously　increased　C%　and　seldom　heavy　metal.