欢迎访问《生物质化学工程》，
生物质化学工程

生物质化学工程 ›› 2016, Vol. 50 ›› Issue (5): 39-44.doi: 10.3969/j.issn.1673-5854.2016.05.008

• 研究报告 • 上一篇    下一篇

麦草两段预浸渍化机浆废水的污染物特征和发生量

张华兰1, 房桂干1,2, 施英乔1, 沈葵忠1,2, 冉淼1, 韩善明1, 丁来保1,2, 盘爱享1,2   

  1. 1. 中国林业科学研究院 林产化学工业研究所;生物质化学利用国家工程实验室;国家林业局 林产化学工程重点开放性实验室;江苏省 生物质能源与材料重点实验室, 江苏 南京 210042;
    2. 中国林业科学研究院 林业新技术研究所, 北京 100091
  • 收稿日期:2016-01-06 出版日期:2016-09-30 发布日期:2016-12-03
  • 通讯作者: 房桂干,研究员,博士生导师,从事制浆造纸及环境保护及生物质高值化利用技术研究;E-mail:fangguigan@icifp.cn。 E-mail:fangguigan@icifp.cn
  • 作者简介:张华兰(1985-),女,江苏兴化人,工程师,硕士生,从事环境保护与清洁制浆技术研究;E-mail:zhl200706@sina.com
  • 基金资助:
    “十二五”国家科技支撑计划资助（2014BAD02B02）

Pollution Characteristics and Loads in Wastewater of Chemimechanical Pulp of Wheat Straw by Two-stage Impregnated Process

ZHANG Hua-lan1, FANG Gui-gan1,2, SHI Ying-qiao1, SHEN Kui-zhong1,2, RAN Miao1, HAN Shan-ming1, DING Lai-bao1,2, PAN Ai-xiang1,2   

  1. 1. Institute of Chemical Industry of Forest Products, CAF;National Engineering Lab. for Biomass Chemical Utilization;Key and Open Lab. of Forest Chemical Engineering, SFA;Key Lab. of Biomass Energy and Material, Jiangsu Province, Nanjing 210042, China;
    2. Research Institute of Forestry New Technology, CAF, Beijing 100091, China
  • Received:2016-01-06 Online:2016-09-30 Published:2016-12-03

PDF (PC)

893

摘要： 对不同碱用量两段预浸渍麦草化学机械制浆（CTMP）废水的污染特征进行分析，探讨了制浆得率与污染负荷之间的关系。研究表明：采用两段NaOH浸渍，当碱总用量为3%~5%时，可以在较低的磨浆能耗得到质量指标良好的纸浆，制浆得率为73.1%~78.9%，产生的化学需氧量（COD）为270.5~446.0 kg/t，5日生化需氧量（BOD5）为181.3~228.2 kg/t，悬浮物（SS）为47.62~124.30 kg/t。此麦草CTMP制浆废水的BOD5/COD值在0.422~0.466之间，属于可生化性较好的有机废水，且mBOD5：mN：mP的结果表明采用厌氧+好氧的生化处理，反应体系的N元素和P元素均可满足微生物的需要，无需另外补充。且随着碱总用量的增加，麦草CTMP制浆得率下降，而其相应的污染负荷随之增加。在碱总用量为0~8%时，COD污染发生量（L）与制浆得率（Y）关系方程式为L=5 884-11 670Y+5 800Y2，R2=0.995。

关键词: 麦草, 化学预浸渍, CTMP制浆废水, 污染物特征, 制浆得率

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 270.5-446.0 kg/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%.

Key words: wheat straw, chemical impregnated, CTMP pulping wastewater, pollution characteristics, pulping yield

中图分类号: 

版权所有 © 中国林业科学研究院林产化学工业研究所　苏ICP备08107184号-5