废弃物水稻秸秆制备催化剂强化臭氧深度处理造纸废水的效能

doi:10.11949/j.issn.0438-1157.20160919

化工学报 ›› 2017, Vol. 68 ›› Issue (1): 313-319.DOI: 10.11949/j.issn.0438-1157.20160919

废弃物水稻秸秆制备催化剂强化臭氧深度处理造纸废水的效能

庄海峰^1,2, 黄海丽², 徐科龙², 张云金², 韩洪军³, 单胜道¹

1 浙江科技学院浙江省废弃生物质循环利用与生态处理技术重点实验室, 浙江杭州 310023;
2 常山县农村能源办公室, 浙江衢州 324200;
3 哈尔滨工业大学城市水资源和水环境国家重点实验室, 黑龙江哈尔滨 150090

收稿日期:2016-07-04 修回日期:2016-10-06 出版日期:2017-01-05 发布日期:2017-01-05
通讯作者: 庄海峰
基金资助:
浙江省公益技术研究社会发展项目（2016C33108）；浙江省自然科学基金项目（LQ17E080008）；浙江省重大科技专项重点农业项目（2015C02037）。

Advanced treatment of paper-making wastewater using catalytic ozonation with waste rice straw as catalyst

ZHUANG Haifeng^1,2, HUANG Haili², XU Kelong², ZHANG Yunjin², HAN Hongjun³, SHAN Shengdao¹

1 Key Laboratory of Recycling and Eco-treatment of Waste Biomass of Zhejiang Province, Zhejiang University of Science and Technology, Hangzhou 310023, Zhejiang, China;
2 Changshan County Rural Energy Office, Quzhou 324200, Zhejiang, China;
3 State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, Heilongjiang, China

Received:2016-07-04 Revised:2016-10-06 Online:2017-01-05 Published:2017-01-05
Contact: 10.11949/j.issn.0438-1157.20160919
Supported by:
supported by the Public Welfare Technology Application Research Project of Zhejiang Province, China (2016C33108), the Zhejiang Provincial Natural Science Foundation of China (LQ17E080008) and the Major Projects for Science and Technology Development of Zhejiang Province, China (2015C02037).

摘要/Abstract

摘要：

以农业废弃物水稻秸秆为原料制备了秸秆基活性炭负载金属Fe氧化物的臭氧催化剂，主要特征为负载Fe₃O₄，负载量14.25%，比表面积1175.1 m²·g^-1，研究其强化臭氧深度处理造纸废水的效能。结果表明，制备的秸秆基活性炭和催化剂均对造纸废水污染物具有较高的吸附性能，吸附等温线与Langmuir模型拟合相关性良好（R²>0.99）；催化剂的使用显著强化了臭氧氧化污染物的性能，最佳的运行参数是臭氧和催化剂投加量分别为0.3g·h^-1和1 g·L^-1及原水pH，处理后出水COD、BOD₅、氨氮和色度分别为46、17、5 mg·L^-1和18倍，均低于我国造纸废水污染物排放标准（GB 3544-2008）；重复20次的运行，催化剂具有良好的稳定性，金属离子溶出浓度极少，并通过自由基捕获剂和ESR测试探讨该催化臭氧氧化过程属自由基间接氧化为主导的反应机理。本研究制备的臭氧催化剂具有性能高效稳定和经济节约的特点，适用于造纸废水深度处理的工程化应用。

关键词: 吸附, 催化臭氧化, 催化剂, 自由基, 废物处理

Abstract:

Waste rice straws were converted into rice straw derived activated carbon(RSAC), which supported ferric oxides(Fe₃O₄, loaded dosage of 14.25%) as ozone catalyst with 1175.1 m²·g^-1 of specific surface area, and efficiency of heterogeneous catalytic ozonation of biologically pretreated paper-making wastewater were investigated.The results indicated that RSAC and catalyst all had the good adsorption capacity of biologically pretreated paper-making wastewater, and the adsorption isotherms fitted well with the Langmuir model(R²>0.99).The addition of the prepared catalyst significantly enhanced the pollutants removal performance of ozonation of raw wastewater, and the COD, BOD₅, NH₄⁺-N and chromaticity in the treated effluent were 46, 17, 5 mg·L^-1 and 18 degree which all met discharge standard paper-making wastewater(GB 3544-2008) with the optimal operating parameters(0.3 g·h^-1 of ozone dosage and 1 g·L^-1 of catalyst dosage and raw wastewater pH).Moreover, the catalyst had superior stability and leaching of metal irons were very few at 20 cycle's utilization.It was deduced that the enhancement of catalytic activity was responsible for generating more radicals by radical scavenger and ESR detection.Thus, the prepared catalyst with efficient, stable and economical advantages was suitable for catalytic ozonation of biologically pretreated paper-making wastewater.

Key words: adsorption, catalytic ozonation, catalyst, radical, waste treatment

中图分类号:

X703.1

庄海峰, 黄海丽, 徐科龙, 张云金, 韩洪军, 单胜道. 废弃物水稻秸秆制备催化剂强化臭氧深度处理造纸废水的效能[J]. 化工学报, 2017, 68(1): 313-319.

ZHUANG Haifeng, HUANG Haili, XU Kelong, ZHANG Yunjin, HAN Hongjun, SHAN Shengdao. Advanced treatment of paper-making wastewater using catalytic ozonation with waste rice straw as catalyst[J]. CIESC Journal, 2017, 68(1): 313-319.

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废弃物水稻秸秆制备催化剂强化臭氧深度处理造纸废水的效能

Advanced treatment of paper-making wastewater using catalytic ozonation with waste rice straw as catalyst

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