林产化学与工业2018，Vol.38Issue(2)：39-45,7.DOI:10.3969/j.issn.0253-2417.2018.02.005
生物质灰渗出金属离子在TMP废水处理中的作用
Influence of Metallic Elements Exuded from Wood Based Fly Ash on Treatment of TMP Effluent
摘要
Abstract
In the process of thermomechanical pulping(TMP) effluent treatment using wood based fly ash (FA) as reactant, inorganic metallic ions can exude into the effluent from FA complex. In order to determine the metallic elements in FA would flocculate and remove the organics in the effluent under the alkaline condition, the removal behaviors of organic material were investigated by means of simulation with different kind of metallic ions addition at various dosage levels and adjusting pH value of TMP effluent, respectively. It concluded that the metallic ions combined with organics precipitate simultaneously under the alkaline condition by charge neutralization and H-bond to form large particles. The removal rates increased with the increment dosage of Mg2+ and Fe3+,while the Ca2+ and Al3+ would not be affected by their dosage under the alkaline condition. When the pH values were 10 and 12, respectively, the removal capability of Ca2+and Mg2+ was maximum at pH value 12, while Al3+ achieved peak removal rate at pH 10. The removal efficiency from Fe3+ kept constant between pH value 10 and 12.关键词
热磨机械浆废水/生物质灰/金属离子Key words
TMP effluent/wood based fly ash/metallic ions分类
化学化工引用本文复制引用
孙勇慧,刘忠,FATEHI Pedram..生物质灰渗出金属离子在TMP废水处理中的作用[J].林产化学与工业,2018,38(2):39-45,7.基金项目
国家自然科学基金资助项目(31270631,21576213) （31270631,21576213）
