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[1]蒋心茹 刘杨 谢炎东 姬高升 许力山 宦臣臣 张忠武 刘明刚 闫志英**.回流液对剩余污泥厌氧消化的影响[J].应用与环境生物学报,2021,27(01):1-10.[doi:10.19675/j.cnki.1006-687x.2020.02035]
 JIANG Xinru,LIU Yang,XIE Yandong,et al.Effect of leachate recirculation on sewage sludge anaerobic digestion*[J].Chinese Journal of Applied & Environmental Biology,2021,27(01):1-10.[doi:10.19675/j.cnki.1006-687x.2020.02035]
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回流液对剩余污泥厌氧消化的影响()
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《应用与环境生物学报》[ISSN:1006-687X/CN:51-1482/Q]

卷:
27卷
期数:
2021年01期
页码:
1-10
栏目:
研究论文
出版日期:
2021-02-25

文章信息/Info

Title:
Effect of leachate recirculation on sewage sludge anaerobic digestion*
作者:
蒋心茹123 刘杨123 谢炎东4 姬高升123 许力山13 宦臣臣13 张忠武5 刘明刚5 闫志英13**
1中国科学院成都生物研究所 成都 610041
2中国科学院大学 北京 100049
3中国科学院环境与应用微生物重点实验室 成都 610041
4广西师范大学 桂林 541004
5四川能投水务投资有限公司 成都 610041
Author(s):
JIANG Xinru123 LIU Yang123 XIE Yandong4 JI Gaosheng1 2 3 XU Lishan1 3 HUAN Chenchen1 3 ZHANG Zhongwu5 LIU Minggang5 & YAN Zhiying 13*
1 Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China
2 University of Chinese Academy of Sciences, Beijing 100049, China
3 Key Laboratory of Environmental and Applied Microbiology of Chinese Academy of Sciences, Chengdu 610041, China
4 Guangxi Normal University, Guilin 541004, China
5 Sichuan Water Affairs Investment CO., LTD, Chengdu610041, China
关键词:
剩余污泥厌氧发酵沼液回流酸化预处理
Keywords:
sewage sludge anaerobic digestion leachate recirculation acidification pretreatment
DOI:
10.19675/j.cnki.1006-687x.2020.02035
摘要:
随着污泥产量的不断增加,未能妥善处置的污泥会给环境带来许多隐患。污泥厌氧消化技术可使污泥“无害化”、“减量化”、“资源化”,是污泥处置的主流技术路线之一。但污泥的厌氧消化效率低,限制了该技术的推广应用。本研究利用污泥厌氧发酵罐的回流沼液,对污水处理厂脱水的市政污泥进行酸化预处理,从而提高污泥的产沼气效率。结果表明,污泥厌氧发酵最佳条件为温度35 ℃,含固率8%,接种量40%;污泥酸化预处理最佳回流比为5%(v/w,回流液/污泥),该条件使污泥上清液的挥发性脂肪酸含量增加了26.14%。根据Gomperzt修正方程拟合结果表明,预处理后的污泥累计产甲烷率为85.53 mL g-1 TS -1,提高了43.96%;厌氧发酵延滞期缩短至2.97 d;最大日产甲烷量为8.81 mL g -1 d -1。该研究获得了沼液酸化预处理污泥的最佳回流比,成功提高了污泥的产气效率,开发了低成本的污泥酸化预处理工艺,具有一定的工程应用前景。(图5参31)
Abstract:
With the increas ing sewage sludge yield, t he environmental issues caused by untreated sewage sludge come more severe . Anaerobic digestion (AD) is one of the conventional methods for disposing sewage sludge which can make it reduction, harmless and recycling. However, the technique extension and application of sewage sludge AD is limited because of low degradation efficiency. In this study , leachate from sewage sludge digestor was used in the pretreatment of sewage sludge to enhanc e the acidification phase and to improve the biogas yield efficiency of that.. The optimal AD parameters of sewage sludge were 35 ℃ ,8% TS content and 40% inoculum volume. The best leachate addition ratio was 5% (v/w, leachate/sewage sludge). Under this condition, a 26.14% increase of volatile fatty acid (VFAs) was observed . The results of modified Gompertz fitting showed that sewage sludge cumulative methane production was 85.53 mL g-1 TS -1, which was 43.96% higher than general AD condition . Moreover, the lag phase dropped to 2.97 d and the highest daily methane production was 8.81 mL g-1 d -1 after pretreatment . This study successfully increased sewage sludge AD efficiency by leachate with optimal recirculation rate. The leachate pretreatment will be a promising method in the reduction of sewage sludge AD cost.

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备注/Memo

备注/Memo:
收稿日期 Received: 2020-02-26 接受日期 Accepted: 2020-04-16
中国科学院西部之光项目(2019XBZG_JCTD_ZDSYS_001)、中国科学院科技服务网络项目(KFJ-STS-QYZD-098)、四川省重大科技专项课题(2018SZDZX0024)和污泥厌氧消化及资源化利用工程化技术(Y9A5050001)资助 Supported by the CAS “Light of West China” Program (2019XBZG_JCTD_ZDSYS_001), Science and Technology Service Network Initiative of the CAS (KFJ-STS-QYZD-098), the Major science and technology projecTS in Sichuan Province (2018SZDZX0024) and Sludge anaerobic digestion and resource utilization engineering technology (Y9A5050001)
**通讯作者 Corresponding author (E-mail: yanzy@cib.ac.cn)
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更新日期/Last Update: 2020-04-28