Micro-electrolysis treatment for hot，grinding wastewater from MDF production using Fenton’s reagent
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摘要: 研究了Fenton试剂强化微电解工艺预处理中纤板热磨废水的效果。结果表明，保持废水中亚铁离子（Fe2＋）和过氧化氢（H2O2）的摩尔比为0.05 ～ 0.10，反应30 min后将废水pH值调到8.5，可进一步将微电解出水的化学需氧量值从14 000 mgL-1降低到3 500 mgL-1左右，大幅提升了预处理的效果，并为后续的生化处理提供良好的基础。另外，对热磨废水和最终出水进行了气相色谱/质谱联用技术（GC-MS）分析，结果显示，微电解-Fenton氧化工艺的氧化能力可以打开所有热磨废水中单环萜烯的键，将它们氧化成低碳原子的酯类、醇类和酮类化合物，但还不足以将废水中所有双环萜烯的键打开。图5表1参13Abstract: The hot，grinding wastewater from medium density fiberboard（MDF） production contains high concentrated toxic oranic maters. It is not fit for biochemical treatment even after pretreatment of micro-electrolysis. Fentons reagent method was employed to improve the former micro-electrolysis treatment by means of jar test. Optimal parameters of the Fenton process were determined as 0.05－0.10 of ［Fe2+］/［H2O2］ with 1 h reaction time. When Fenton treated effluent was controlled at pH 8.5，the sedimentation process further removed pollutants，and the chemical oxygen demand（COD） concentration of the former micro-electrolysis treatment effluent was reduced from 14 000 mgL－1 to about 3 500 mgL－1 . GC-MS analysis indicated that the combined process of micro-electrolysis and Fenton oxidation broke almost all of the monocyclic terpene bonds in the wastewater，oxidizing them to esters，alcohols，and ketones with a lower carbon number. However，for double ring terpense the combined process only broke some of the bonds. These obtained results evidenced the efficiency of the combined process to the hot，grinding wastewater pretreatment and should contribute to further studies of MDF wastewater treatment.［Ch，5 fig. 1 tab. 13 ref.］
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https://zlxb.zafu.edu.cn/article/doi/10.11833/j.issn.2095-0756.2011.01.003
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