To make new adsorbents for processing heavy metals wastewater, black wattle bark with high content of tannin was reacted with formaldehyde to fix the tannin in the bark.

• 为充分利用我国丰富的黑荆树皮资源，满足现代重金属废水对吸附剂的更高要求，本文对黑荆树皮进行改性，并研究其对重金属离子的吸附性能。