...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Environmental Science and Health >Implementation of an excess sludge reduction step in an activated sludge process
【24h】

Implementation of an excess sludge reduction step in an activated sludge process

机译：在活性污泥工艺中实施减少多余污泥的步骤

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

In this study, excess sewage sludge reduction resulting from the modification of an activated sludge process by incorporation of an excess sludge digesting reactor (ESDR) was examined. The ESDR was coupled to the sludge return line, and enhanced the solubilization of cell mass under thermophilic aerobic conditions. The decrease in the level of total suspended solids (TSS) observed in the reference ESDR (without thermophilic microbial inoculation) was 13.76% whereas a TSS decrease of 32.09% was achieved by the test ESDR (with thermophiles), thus showing microbial enhancement of solubilization of 18.33% over a test period of 48 h. The average excess sludge solubilization ratios (β values) of TSS were 51.17% and 41.56% in two distinct protocols varying in operative parameters. The calculated excess sludge reduction ratio was 49.60% with a sludge recirculation ratio of 2, but increased to 68.97% when the sludge recirculation ratio rose to 3. The sludge volume indexes (SVIs) for the control and test processes were 68.4 and 57.0 respectively, indicating the absence of any negative effect of the modification on sludge settling characteristics. Effluent water quality satisfied national legislative requirements.
机译：在这项研究中，研究了通过结合过量污泥消化反应器（ESDR）来改变活性污泥工艺而减少的多余污泥。 ESDR与污泥回流管线相连，并在嗜热好氧条件下增强了细胞团的增溶作用。在参考ESDR（无嗜热微生物接种）中观察到的总悬浮固体（TSS）含量降低了13.76％，而测试ESDR（有嗜热剂）则使TSS降低了32.09％，因此显示了微生物增溶作用在48小时的测试时间内达到18.33％。在两种不同的操作参数不同的方案中，TSS的平均过量污泥溶解率（β值）分别为51.17％和41.56％。在污泥再循环率为2的情况下，计算出的过量污泥减少率为49.60％，但在污泥再循环率上升至3时，增加到68.97％。对照和测试过程的污泥体积指数（SVI）分别为68.4和57.0，表明改性对污泥沉降特性没有负面影响。出水水质符合国家法律要求。

著录项

  • 来源
    《Journal of Environmental Science and Health》 |2010年第6期|P.709-718|共10页
  • 作者

    CHUL-HWI PARK; YOON-SUN BAE; GEE-BONG HAN;

  • 作者单位

    Department of Environmental Engineering, University of Seoul, Dongdaemun-gu, Seoul, Republic of Korea;

    rnDepartment of Environmental Engineering, University of Seoul, Dongdaemun-gu, Seoul, Republic of Korea;

    rnDepartment of Biosciences and Environmental Engineering, The Catholic University of Korea, San 43-1 Yeokgok-dong, Wonmi-gu, Bucheon, Kyunggi-do, Republic of Korea;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    activated sludge; reduction ratio; solubilization effect; sewage treatment;

    机译：活性污泥减速比;增溶作用污水处理;

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号