生物质化学工程2016，Vol.50Issue(5)：39-44,6.DOI:10.3969/j.issn.1673-5854.2016.05.008
麦草两段预浸渍化机浆废水的污染物特征和发生量
P ollution Characteristics and Loads in Wastewater of Chemimechanical P ulp of Wheat Straw by Two-stage Impregnated P rocess
摘要
Abstract
The pollution characteristics of wastewater from the two-stage impregnated process of wheat straw chemimechanical pulp (CTMP) with different alkali charges were analyzed comprehensively.The relationships of the pulp yield and pollution load were discussed.The results showed that good pulp properties could be obtained at low refining energy consumption with two-stage NaOH impregnation process while the total alkali charges in the whole pulping process were 3%-5% with the pulp yields of 73.1%-78.9%.Meanwhile,the produced wastewater had the chemical oxygen demand(COD) pollution load of 270.5-446.0kg/t,the five days’ biochemical oxygen demand(BOD5) pollution load of 181.3-228.2 kg/t and the suspended solid(SS) pollution load of 47.62-124.30 kg/t. The BOD5/COD ratios of 0.422-0.466 meaned that the wastewater was easy to be treated by the biochemical treatment process.By the suitable ratio of mBOD5∶mN∶mP of the wastewater,its N and P element were enough to meet the needs of microorganism in the anaerobic-aerobic biochemical treatment.With the increase of the alkali charge,the yield of wheat straw CMP pulps declined,while the corresponding pollution loads increased.The relation formula of the pulping yield(Y) and COD pollution loads( L) was L=5 884-11 670Y+5 800Y2 ,R2=0.995 with the total alkali charge of 0-8%.关键词
麦草/化学预浸渍/CTMP制浆废水/污染物特征/制浆得率Key words
wheat straw/chemical impregnated/CTMP pulping wastewater/pollution characteristics/pulping yield分类
化学化工引用本文复制引用
张华兰,房桂干,施英乔,沈葵忠,冉淼,韩善明,丁来保,盘爱享..麦草两段预浸渍化机浆废水的污染物特征和发生量[J].生物质化学工程,2016,50(5):39-44,6.基金项目
“十二五”国家科技支撑计划资助(2014BAD02B02) （2014BAD02B02）
