【摘要】 通过对两种品种的木屑进行蒸煮试验,对不同蒸煮条件下木质素的溶出规律进行了初步探讨,并对木材蒸煮废水进行混凝和酸析处理,考察了不同混凝剂及不同混凝条件对木质素和COD_Cr,去除率的影响。更多还原

【Abstract】 In order to explore the differences of the effects of different chemical treatments on the waste water from cooking wood, we have taken two kinds of woods for cooking tests. The test results show: there are differences in the release of the lignin in the woods; under the circumstance of the extent of the concentration of alkali lower than 1%, the woods cn release more lignin when more alkali is put into the cooking water; the coagulation treatment si better than acid-out one to remove the COD_Cr and the lignin. Using the former treatment, 70% of lignin in the waste water can be discomposed if FeCl₃ is added in it.更多还原