| 尹宝河,常淑斌,战树岩,贾振睿,高涛,杜静轩.Cu/Al2O3催化臭氧氧化深度处理造纸废水[J].中国造纸,2025,44(7):131-139 |
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| Cu/Al2O3催化臭氧氧化深度处理造纸废水 |
| Cu/Al2O3 Catalyzed Ozonation for Advanced Treatment of Papermaking Wastewater |
| 收稿日期：2025-01-13 修订日期：2025-01-21 |
| DOI：10.11980/j.issn.0254-508X.2025.07.015 |
| 关键词: 催化臭氧氧化 非均相催化剂 造纸废水 深度处理 浸渍-焙烧法 |
| Key Words:catalyzed ozonation heterogeneous catalyst papermaking wastewater advanced treatment impregnation-calcination method |
| 基金项目: |
| 作者 | 单位 | 邮编 | | 尹宝河* | 天津万峰环保科技有限公司,天津,300030 | 300030 | | 常淑斌* | 天津万峰环保科技有限公司,天津,300030 | 300030 | | 战树岩 | 天津万峰环保科技有限公司,天津,300030 | 300030 | | 贾振睿 | 天津万峰环保科技有限公司,天津,300030 | 300030 | | 高涛 | 天津万峰环保科技有限公司,天津,300030 | 300030 | | 杜静轩 | 天津万峰环保科技有限公司,天津,300030 | 300030 |
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| 摘要:本研究首先以Al2O3为载体，采用浸渍-焙烧法制备了非均相催化剂Cu/Al2O3，并对其进行表征；以天津某造纸厂废水为原料，开展了实验室规模的臭氧通入量（4、6、8和10 mg/min）、Cu/Al2O3用量（30、40、50和60 g/L）及循环水流速（0、40、80和120 mL/min）对出水化学需氧量（COD）影响的测试；最终将Cu/Al2O3催化臭氧氧化工艺作为废水深度处理工艺，开展中试试验。结果表明，Cu可以通过浸渍-焙烧法负载在载体表面。在实验室测试中，当臭氧通入量为8 mg/min、Cu/Al2O3用量为50 g/L、循环水流速为120 mL/min时，废水CODCr从64.0 mg/L降至21.8 mg/L，CODCr去除率为65.9%。在中试试验中，当中试试验进水的CODCr在50.0~65.0 mg/L范围波动时，出水的CODCr均低于30 mg/L，CODCr去除率稳定在63.1%左右，出水COD符合GB 3544—2008《制浆造纸工业水污染物排放标准》中的排放标准，表明制备的催化剂活性稳定，无二次污染。 |
| Abstract:In this study， firstly， the heterogeneous catalyst （Cu/Al2O3） was prepared by impregnation-calcination method with Al2O3 as the carrier， and we characterized it. Then， the effects of ozone inflow （4, 6, 8, and 10 mg/min）， catalyst dosage （30, 40, 50, and 60 g/L）， and circulating water flow rate （0, 40, 80, and 120 mL/min） on effluent chemical oxygen demand （COD） were tested in laboratory scale， using the wastewater of a paper mill in Tianjin as raw material. Finally， Cu/Al2O3 catalyzed ozonation was used as the advanced treatment process to carry out pilot tests. The results showed that Cu could be loaded on the surface of the carrier by impregnation-calcination method. In the laboratory tests， when the ozone inflow was 8 mg/min， the dosage of Cu/Al2O3 was 50 g/L， and the circulating water flow rate was 120 mL/min， the CODCr of wastewater decreased from 64.0 mg/L to 21.8 mg/L， and the removal rate of CODCr was 65.9%. In the pilot test， when the CODCr of influent water fluctuated in the range of 50.0~65.0 mg/L， the CODCr of effluent water was lower than 30 mg/L， and the CODCr removal rate was stable at about 63.1%. The COD of effluent water met the discharge standard of GB 3544—2008“Discharge standard of water pollutants for pulp and paper industry”， which indicated that the prepared catalyst had stable activity and no secondary pollution. |
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