制革工业产生的大量污泥由于含有大量重金属铬制约了其农业用途。如何有效降低制革污泥中的铬含量是现今学者们的研究热点。本文介绍了化学法除铬的研究现状，并探讨了化学法今后的研究方向。%Large amounts of tannery sludge is produced from leather tanning industry, which contalns a lot of heavy metal Cr, and cannot be used directly in agriculture. How to effectively reduce the chromium content in the tanning sludge is a research hotspot. In This paper, the recent study on chemical method was reviewed in detall. Besides, the direction of the chemical method was discussed.
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