...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Bioprocess and Biosystems Engineering >An effective way to select slow-growing nitrifying bacteria by providing a dynamic environment
【24h】

An effective way to select slow-growing nitrifying bacteria by providing a dynamic environment

机译：通过提供动态环境选择生长缓慢的硝化细菌的有效方法

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, two laboratory scale sequencing batch reactors (SBRs) were conducted to study the stability of aerobic granules. The strategy was involved in stepwise increase in ammonium (NH4~+-N) concentration in the influent. Results showed that the activity of nitrifying bacteria and diameter of the aerobic granules significantly increased with gradually increasing NH4~+-N, which reached persistently new balances by homeostasis. As a result, the stability of aerobic granules was remarkably enhanced. The value of sludge volume index (SVI) was below 25 ml/g, the mean settling velocity was excellent up to 107 m/h. The NH4~+-N removal efficiency averaged above 99% and total nitrogen (TN) removal was greatly enhanced and could reach 68%. Besides dissolved oxygen, the granules size was also a dominant factor to influence denitrification, which could gradually increase in variable conditions through homeostasis. Stable, dense and well-settling nitrifying granules can be developed for simultaneous nitrification and denitrification removal.
机译：在这项研究中，进行了两个实验室规模的测序批处理反应器（SBR），以研究好氧颗粒的稳定性。该策略涉及逐步增加进水中的铵（NH4〜+ -N）浓度。结果表明，随着NH4〜+ -N的逐渐增加，硝化细菌的活性和好氧颗粒的直径显着增加，并通过体内稳态达到持续的新平衡。结果，好氧颗粒的稳定性显着提高。污泥体积指数（SVI）值低于25 ml / g，平均沉降速度高达107 m / h。 NH4〜+ -N的去除率平均在99％以上，总氮（TN）去除率大大提高，可达68％。除溶解氧外，颗粒大小也是影响反硝化作用的主要因素，反硝化作用在不同条件下会通过稳态而逐渐增加。可以开发出稳定，致密且沉降良好的硝化颗粒，以便同时进行硝化和反硝化去除。

著录项

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