| 生物沥浸耦合类Fenton氧化调理城市污泥 |
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| 引用本文： | 刘昌庚,张盼月,蒋娇娇,曾成华,黄毅,徐国印.生物沥浸耦合类Fenton氧化调理城市污泥[J].环境科学,2015,36(1):333-337. |
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| 作者姓名： | 刘昌庚 张盼月 蒋娇娇 曾成华 黄毅 徐国印 |
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| 作者单位： | 1. 攀枝花学院资源与环境工程学院,攀枝花,617000
2. 北京林业大学环境科学与工程学院，北京 100083; 湖南大学环境科学与工程学院，长沙 410082 |
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| 基金项目： | 国家自然科学基金项目(51178047) |
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| 摘 要： | 采用生物沥浸耦合类Fenton氧化工艺对城市污泥进行了调理研究.结果表明,在升华硫和Fe SO4·7H2O投量分别为3g·L-1和8 g·L-1时,污泥p H从6.9降至2.5约需1 d,满足类Fenton氧化的适宜酸性条件.生物沥浸处理后,污泥挥发性固体(VS)减少率为13.4%,污泥比阻从3.1×109s2·g-1降至1.5×109s2·g-1,降低51.6%,但仍属于难脱水污泥.沥浸污泥继续经类Fenton氧化调理,调理的最佳H2O2投量和反应时间分别为3.3 g·L-1和60 min.处理后污泥VS减少率为30.8%,污泥比阻和滤饼含水率分别为1.9×108s2·g-1和76.9%,污泥比阻降低93.9%,污泥脱水性能和稳定性能得到显著提高.此外,该联合工艺对污泥的调理效果优于类Fenton氧化单独调理.
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| 关 键 词： | 城市污泥 生物沥浸 类Fenton氧化 脱水性能 稳定性能 |
| 收稿时间： | 2014/6/15 0:00:00 |
| 修稿时间： | 2014/7/30 0:00:00 |
Sewage Sludge Conditioning by Bioleaching Combined with Fenton-like Oxidation |
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| LIU Chang-geng,ZHANG Pan-yue,JIANG Jiao-jiao,ZENG Cheng-hu,HUANG Yi and XU Guo-yin.Sewage Sludge Conditioning by Bioleaching Combined with Fenton-like Oxidation[J].Chinese Journal of Environmental Science,2015,36(1):333-337. |
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| Authors: | LIU Chang-geng ZHANG Pan-yue JIANG Jiao-jiao ZENG Cheng-hu HUANG Yi and XU Guo-yin |
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| Institution: | School of Resources and Environmental Engineering, Panzhihua University, Panzhihua 617000, China;College of Environmental Science and Engineering, Beijing Forestry University, Beijing 100083, China;College of Environmental Science and Engineering, Hunan University, Changsha 410082, China;School of Resources and Environmental Engineering, Panzhihua University, Panzhihua 617000, China;School of Resources and Environmental Engineering, Panzhihua University, Panzhihua 617000, China;School of Resources and Environmental Engineering, Panzhihua University, Panzhihua 617000, China;School of Resources and Environmental Engineering, Panzhihua University, Panzhihua 617000, China |
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| Abstract: | Bioleaching combined with Fenton-like oxidation was used to condition sewage sludge. The results showed that it took~1 d to decrease pH from 6.9 to 2.5 by bioleaching, with fixed sulfur power and FeSO4·7H2O dosages of 3 g·L-1 and 8 g·L-1, respectively. After bioleaching, the volatile solids(VS) reduction was 13.4%, and the specific resistance to filtration(SRF) dropped from 3.1×109 s2·g-1 to 1.5×109 s2·g-1 with a reduction of 51.6%, but the bioleached sludge was still difficult to be dewatered. The bioleached sludge was further oxidized by Fenton-like oxidation. The results indicated that the optimal H2O2 dosage and reaction time were 3.3 g·L-1 and 60 min, respectively. Under the optimal conditions, VS reduction was 30.8%, SRF was declined to 1.9×108 s2·g-1 with a reduction of 93.9%, and the moisture of sludge cake was 76.9%. After treated by bioleaching combined with Fenton-like oxidation, the dewaterability and stability of sewage sludge were significantly improved. Besides, the combined technology was more efficient in conditioning sewage sludge than single Fenton-like oxidation. |
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| Keywords: | sewage sludge bioleaching Fenton-like oxidation dewaterability stability |
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