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制革工业污泥中Cr3+的回收试验
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摘要:对制革工业污泥中cr回收与再利用进行了试验。试验表明:cr的总回收率的高低主要决定于 cr3+的氧化是否彻底,在n(h2o2):n(cr3+)为7.5,ph=10,温度为60℃以及反应时间为30min的条件下,污泥中 cr3+氧化率接近90%,总回收率可以达到 80%以上。 关键词:制革污泥 污泥处理 金属铬 铬回收 a test of recovery of cr3+ in sludge from tanneries hu ming-cheng (electronic engineering institute of cuilin,guilin 451004,china) abstract:the recovery and reuse of cr3+ in the sludge from tanneries were tested.the results showed:the total recovery rate of cr3+ depended largely on whether the oxldation of cr3+ was suffcient or
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