Evergreen oak of the Pacific coast area having large leathery leaves ; yields tanbark .

太平洋沿岸的一种常绿栎树的一种，叶大，皮质；生产 鞣料 树皮。

The running practice indicated that it had made better effect on decoloring more than 94 % of COD and BOD in the wastewater had been reduced . It is an effective and reasonable technique for tanbark leather wastewater treatment .

工程实践证明：该法对废水COD和BOD的去除率可达94%以上，且对废水的脱色效果良好，是一种合理有效的处理 皮革废水工艺 路线。