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林产化学与工业

林产化学与工业 ›› 2012, Vol. 32 ›› Issue (3): 38-42.

• 研究报告 • 上一篇    下一篇

催化氧化深度处理高浓化机浆废水及工程设计

盘爱享1,2, 施英乔1,2, 丁来保1,2, 李四辉1, 房桂干1   

  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:2012-04-19 修回日期:1900-01-01 出版日期:2012-06-30 发布日期:2012-06-30
  • 通讯作者: 施英乔(1957-)男,江苏宜兴人,研究员,主要从事环境技术研究;E-mail:singqiao@yahoo.com.cn.

Advanced Treatment of Chem-machanical Pulping Wastewater with Catalytic Oxidation and Engineering Design

PAN Ai-xiang1,2, SHI Ying-qiao1,2, DING Lai-bao1,2, LI Si-hui1, FANG Gui-gan1   

  1. 1. Institute of Chemical Industry of Forest Products, CFA; 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 New Technology of Forestry, CAF, Beijing 100091, China
  • Received:2012-04-19 Revised:1900-01-01 Online:2012-06-30 Published:2012-06-30

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摘要： 监测的某化机浆厂每吨浆废水发生量在24~55 m3/t 之间变动,高浓化机浆废水经过了沉淀-厌氧-好氧生物处理后,化学需氧量(COD)降至 500 mg/L 左右,去除了废水中 90% 的污染负荷。对好氧出水进行了催化氧化试验,探讨了主要处理因素对COD去除率的影响,结果表明:最佳工艺条件pH值为3, H2O2和FeSO4·7H2O用量分别为2和 3 mmol/L, COD去除率为 86.1%,用空气作催化剂在 1.2 L/L 用量下可使废水COD去除率再提高5.6个百分点,达 90% 以上。在工程上,曝气可引自好氧处理的风机房,节省了工程投资。在工厂现场完成放大试验后,设计建造了催化氧化工程,工程运行表明:COD在 500 mg/L 的好氧出水经过氧化处理后排放水COD降至 54 mg/L,生化需氧量(BOD)降至 17 mg/L,悬浮固形物(SS)降至 32 mg/L,色度降至30倍,完全满足新国家排放标准(GB 3544-2008)。

关键词: 催化氧化, 深度处理, 化机浆废水

Abstract: The effluent from a chem-mechanical pulp mill, with discharge varying from 24 to 55 m3/t o.d. pulp, was treated by sedimentation-anaerobic-aerobic stages. COD was reduced down to 500 mg/L, and 90% pollutants were removed. Then the effluent was treated by catalytic oxidation as raw wastewater. During the process, different pH values and usages of H2O2、FeSO4·7H2O were used to investigate and evaluate COD removal of the wastewater. The result indicated that the optimum conditions were H2O2 2 mmol/L and FeSO4·7H2O 3 mmol/L at pH value 3. Under this condition COD removal is 86.1%. COD removal could reach 90% which was 5.6% higher that the previous treatment, when air was used as catalyst and its rate was 1.2 L/L. In engineering, the air could be got from ventilator room conveniently with low cost. The pilot test was carried out on site. The running results showed: after catalytic oxidation, the effluent COD drops to 54 mg/L, BOD is down to 17 mg/L, SS is reduced to 32 mg/L, and chromaticity decreased to 30 times. The performance could meet the new discharge standard(GB3544-2008).

Key words: catalytic oxidation, advanced treatment, chem-machanical pulping wastewater

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