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| Research on Preparation of Magnetic Activated Carbon and Its Application in Removal of COD from River Water |
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Received:June 04, 2020
Revised:June 12, 2020
Accepted:June 16, 2020
Published Online:February 22, 2021
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| DOI：doi：10.3969/j.issn.1007-7545.2021.03.023 |
| KeyWord:modified magnetic; activated carbon; surface modified; river water; COD |
| Author | Institution |
| zhang hongying |
广东省资源综合利用研究所 稀有金属分离与综合利用国家重点实验室 广东省矿产资源开发和综合利用重点实验室 |
| LIU Jin |
广东省资源综合利用研究所 稀有金属分离与综合利用国家重点实验室 广东省矿产资源开发和综合利用重点实验室 |
| XU Shaohua |
广东省资源综合利用研究所 稀有金属分离与综合利用国家重点实验室 广东省矿产资源开发和综合利用重点实验室 |
| ZHANG Jun |
广东省资源综合利用研究所 稀有金属分离与综合利用国家重点实验室 广东省矿产资源开发和综合利用重点实验室 |
| LIN Tiansheng |
广东省资源综合利用研究所 稀有金属分离与综合利用国家重点实验室 广东省矿产资源开发和综合利用重点实验室 |
| WANG Zaihua |
广东省资源综合利用研究所 稀有金属分离与综合利用国家重点实验室 广东省矿产资源开发和综合利用重点实验室 |
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| Abstract: |
| River water was treated by modified magnetic seed magnetic-activated carbon composite adsorption material combined with magnetic separation method. Influences of flocculant type and dosage, modified magnetic seed dosage, action time and magnetic field intensity on removal rate of COD were discussed. The results show that with modified magnetic seed, high gradient magnetic separation is effective to treat COD in river inflow water. Under the conditions of PAC dosage of 10 g/L, modified magnetic seed dosage of 30 g/L, modified magnetic seed action time of 20 min and separation magnetic field strength of 8 000 kA/m, COD content in effluent drops from 90.18 mg/L of raw water to 6.59 mg/L, and COD removal rate is 92.69%, which meets the class I water COD standard in the environmental quality standard for surface water (GB 3838—2002). |
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