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| The Effect of pH Value on Treatment of PCP by Micro-aerobic Magnetic Activated Sludge |
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| DOI：10.11981/j.issn.1000-6842.2017.02.28 |
| Key Words:micro-aerobic; magnetic field; activated sludge; pH value; pentachlorophenol |
| Fund Project:制浆造纸工程国家重点实验室开放基金(201522)；广东省教育厅自然科学项目(2015KTSCX140)；山东省科技重大专项(新兴产业)项目(2015ZDXX0403B03)。 |
| Author Name | Affiliation | | 王 玮1 | 1.青岛科技大学环境与安全工程学院,山东青岛,266042 | | 耿士文1 | 1.青岛科技大学环境与安全工程学院,山东青岛,266042 | | 贾亚婷1 | 1.青岛科技大学环境与安全工程学院,山东青岛,266042 | | 蓝惠霞1,2,* | 1.青岛科技大学环境与安全工程学院,山东青岛,266042；2.华南理工大学制浆造纸工程国家重点实验室,广东广州,510640 | | 兰善红3 | 3.东莞理工学院化学与环境工程学院,广东东莞,523808 | | 李军训4 | 4.泰安生力源生物工程有限公司,山东泰安,271000 |
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| Abstract: |
| The effect of pH value on the treatment of pentachlorophenol (PCP) by magnetic activated sludge in the presence of low concentration of dissolved oxygen (DO, 0.6 mg/L) was studied,and the sludge without magnetic was as blank control. The effects of pH value on the removal rate of PCP and CODCr, the microbial activity and flocculation performance of the activated sludge system were studied. The experimental results showed that the treatment effect of micro-aerobic magnetic activated sludge on PCP and CODCr was higher than that of micro-aerobic activated sludge, especially when the pH value was 5.0～9.0. The removal rate of PCP and CODCr reached maximum when the pH value was 7.0. For micro-aerobic magnetic activated sludge and micro-aerobic activated sludge, the removal rates of PCP reached 87.5% and 70.5% and removal rates of CODCr reached 77.0% and 67.0%, respectively.Due to the presence of the micro-magnetic field, the microbial activity and flocculation performance of the activated sludge system were enhanced. When pH value was 7.0, the concentrations of dehydrogenase and extracellular polymeric substance （PN/PS）in the micro-aerobic magnetic activated sludge system were 248.59 mg/g sludge and 1.3, respectively and the values were 173.18 mg/g and 0.76 in the micro-aerobic activated sludge. |
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