The invention relates to a process for preparing activated carbon by adding sludge into a shell of a chemical sludge. With the excess sludge produced by sewage treatment in chemical industry as raw material, the sludge is added to the shell after drying, and then the activator is added after grinding. Drying and carbonization activation under inert gas protection. Finally, activated carbon from sewage sludge was prepared by cooling, washing and drying. The present invention in chemical industry wastewater treatment produced a large number of surplus sludge as raw material preparation, reduces the emissions of chemical industry sludge, reduce the cost of the preparation of activated carbon adsorbent, has significant environmental benefits and economic benefits. The concentration of activated carbon prepared by the heavy metal is lower than the national standard GB? 5085.3-2007 (identification standard for hazardous wastes) specified in the leaching solution of maximum allowable concentration; at the same time, the pyrolysis conditions, organic compounds in the sludge can be completely mineralized. The activated carbon prepared by the invention can be used in the fields of wastewater treatment, waste gas absorption, etc., and the market prospect is wide.
【技术实现步骤摘要】
本专利技术涉及一种工业固体废弃物的资源化处置，尤其涉及一种化工污泥添加果壳 制备活性炭的工艺。
技术介绍
化工行业的污泥不仅体积庞大，且有机毒物含量高，颗粒细，呈絮状胶体结构，具 有高亲水性。我国现有大小化工园区1000余个，拥有大小化工企业10万余家。这些化工 企业每天产生数万吨的剩余污泥，污泥的含水率高达95%以上，污泥经带式压滤后，含水率 降至70 85%，因其含有各种有机毒物及重金属。按照我国最新颁布的《国家危险废物名 录》规定，化工、医药和农药等行业废水处理过程中产生的剩余污泥为危险固体废弃物，须 送有资质的危险废物处置中心集中处理，处置费用约2000元/吨。我国化工污泥焚烧处理费用高，许多化工企业转而采用填埋或堆肥处理剩余污 泥，由于污泥中含有大量有机毒物，填埋或堆肥易产生严重的二次污染，危害生态环境，且 堆肥占用了大量的农田。研发针对毒性污泥的经济、高效处理技术，因此，如何更有效地处 置城市污泥，将城市污泥变废为宝是环保领域迫切需要解决的问题。
技术实现思路
本专利技术的目的在于针对现有技术的不足，而提供了一种化工污泥添加果壳制备活 性炭的工艺，以简便...
【技术保护点】
１．一种化工污泥添加果壳制备活性炭的工艺，其具体步骤如下：（１）、将带式压滤脱水后的化工污泥干燥后，得到干化污泥；（２）、向干化污泥中加入干果壳得混合物料，再研磨；（３）、加入活化液，在５０～１００℃的温度下浸渍活化，活化时间为２～１０ｈ，边活化边搅拌；然后干燥；（４）、以惰性气体作为保护气，在６００～９００℃热解０．５～５ｈ；（５）、冷却、洗涤、干燥，制得污泥活性炭。
【技术特征摘要】
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