| Pd-Cu/石墨烯协同零价铁(Fe0)的催化反硝化实验 |
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| 引用本文： | 云玉攀,梁钊,朱振亚,万敬敏,忤丽洋,温学友. Pd-Cu/石墨烯协同零价铁(Fe0)的催化反硝化实验[J]. 环境工程, 2021, 39(1): 70-74,165. DOI: 10.13205/j.hjgc.202101010 |
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| 作者姓名： | 云玉攀 梁钊 朱振亚 万敬敏 忤丽洋 温学友 |
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| 作者单位： | 河北地质大学水资源与环境学院,石家庄050031;河北地质大学智慧环境产业技术研究院,石家庄050031;河北省水资源可持续利用与产业结构优化协同创新中心,石家庄050031 |
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| 基金项目： | 河北省自然科学基金（B2019403127）；河北省高等学校科学技术研究项目（QN2020403）；河北省重点研发计划自筹项目（18274232）。 |
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| 摘 要： | 为解决城市污水处理厂二级出水中硝态氮含量较高的问题,对Pd-Cu/石墨烯协同零价铁(Fe0)的新型催化反硝化法处理水体中NO3--N 进行了深入研究,重点对催化反硝化操作条件进行了优化.研究发现,新型催化反硝化法获得较好催化效果的最佳运行条件为:Fe0 投加量为4 g/L,m(Pd)∶m(Cu)为3 ∶1,溶液pH 为...
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| 关 键 词： | 污水处理 硝态氮去除 催化反硝化 |
| 收稿时间： | 2019-09-10 |
CATALYTIC DENITRIFICATION PERFORMANCE OF SYGERGISTIC EFFECT OF Pd-Cu/GRAPHENE AND ZERO-VALENT IRON( Fe~0) |
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| Affiliation: | 1. School of Water Resources and Environment, Hebei GEO University, Shijiazhuang 050031, China;2. Smart Environment Industry Technology Research Institute, Hebei GEO University, Shijiazhuang 050031, China;3. Hebei Province Collaborative Innovation Center for Sustainable Utilization of Water Resources and Optimization of Industrial Structure, Shijiazhuang 050031, China |
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| Abstract: | In order to solve the problem of high nitrate content in secondary effluent of municipal wastewater treatment plants, the sygergistic effect of Pd-Cu/graphene and zero-valent iron (Fe0) on nitrate removal was investigated. The research on condition optimization of catalytic denitrification was conducted. Results showed that good catalytic performance was obtained under the following conditions:Fe0 4 g/L, Pd:Cu 3:1, pH 4.2, Pd-Cu/graphene 4 g/L, and reaction time 2 h, with the 78% of nitrate removal rate and 74% of N2 conversion rate. In catalytic denitrification process, Fe0, as the electron donor, mainly contributed to triggering the catalytic reaction, which occurred in the activated sites (Pd and Cu). The nitrate could be removed and converted to N2 through deoxidization reaction under the effect of the catalyst. Additionally, the carrier and the mass transfer process were also the important factors that may greatly influence the catalytic performance. |
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