In the operation of the urban sewage treatment infrastructure,it will produce a large number of surplus sludge.And misconduct will cause a lot of pollution to the environment.The preparation technology of sludge activated carbon at home and abroad is summarized.According to its research status in waste water,waste gas treatment,and the adsorption effect of the heavy metal,high concentration difficult degradation of organic pollutants in water is discussed.And condition of the removal of waste gas containing sulfur compounds is expounded.In order to realize the waste resource utilization and reach the purpose of waste treat waste,put forward the research ideas that the surplus of wastewater treatment plant is used for the preparation of active carbon to adsorb the foulgas producing in se-wage treatment process.

The sludge was converted into a series of sludge adsorbents by carbonized pyrolysis and the process was optimized. The structure of the adsorbent was characterized by SEM, BET and aperture analysis techniques and the capability for H2S removal was studied. The results indicated that activating temperature, activating time and solid/liquid ratio affect the iodine value of sludge adsorbents. The optimum combination was,namely, that activating temperature was 550°C, activating time was 2. Oh, solid/liquid ratio was 1 ：2, and the iodine value of prepared adsorbents （SA） was 493.12mg/g; the prepared SA with good capability for H2S removal could meet the requirements of the fine desulfurization, with a space velocity of 4600h -1, the deodorization time could reach 48rain; moreover, SA was detected to contain various metal elements, with the average pore diameter about 3.4nm, leading to a superior H2S adsorption and removal ability.