...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Hazardous Materials >Biological treatment of wastewaters from a dye manufacturing company using a trickling filter
【24h】

Biological treatment of wastewaters from a dye manufacturing company using a trickling filter

机译：使用滴滤器对染料制造公司的废水进行生物处理

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

The aim of this work was to assess the effectiveness of a biological trickling filter for the treatment of wastewaters produced by a company manufacturing organic dyes and varnishes. The combined wastewater effluent was fed to a pilot-scale trickling filter in two feeding modes, continuously and as a sequencing batch reactor (SBR). The biodegradability of the diluted wastewaters that were subjected to physicochemical treatment, using Ca(OH)_2 and FeSO_4, was initially studied using a continuously operated trickling filter. The system efficiency ranged up to 60-70% for a hydraulic loading of 1.1 m~3/m~2 day and up to 80-85% for a hydraulic loading 0.6m~3/m~2 day. A stable chemical oxygen demand (COD) removal efficiency of 60-70% was achieved even in the case of undiluted wastewater at a hydraulic loading of 1.1 m~3/m~2 day. The effectiveness of biological treatment of a mixture of the company's main wastewater streams was also examined. The microorganisms developed in the trickling filter were able to efficiently remove COD levels up to 36,000 mg/L, under aerobic conditions at pH values between 5.5 and 8.0. Depending on the operating conditions of the system, about 30-60% of the total COD removal was attributed to air stripping caused by the air supply at the bottom of the filter, whereas the rest of the COD was clearly removed through biological action. The proposed biological treatment process based on a trickling filter, which was operated either continuously or even better in an SBR mode, appears as a promising pretreatment step for coping with dye manufacturing wastewaters in terms of removing a significant portion of the organic content.
机译：这项工作的目的是评估生物滴滤池处理由生产有机染料和清漆的公司生产的废水的有效性。将合并的废水以两种进料方式连续地作为定序分批反应器（SBR）进料到中试滴滤池。最初使用连续滴滤池研究了使用Ca（OH）_2和FeSO_4进行了物理化学处理的稀释废水的生物降解性。对于1.1 m〜3 / m〜2天的水力负荷，系统效率高达60-70％，对于0.6m〜3 / m〜2天的水力负荷系统效率高达80-85％。即使在水负荷为1.1 m〜3 / m〜2天的情况下未稀释的废水，也能达到60-70％的稳定的化学需氧量（COD）去除效率。还检查了公司主要废水流的混合物进行生物处理的有效性。在pH值为5.5至8.0的有氧条件下，滴滤滤池中产生的微生物能够有效去除高达36,000 mg / L的COD。根据系统的运行条件，总COD去除量的约30-60％归因于过滤器底部空气供应引起的空气汽提，而其余的COD则是通过生物作用明显去除的。所提出的基于滴滤池的生物处理工艺（在SBR模式下连续运行或什至更好地运行），就去除大量有机物而言，似乎是应对染料生产废水的一种有前途的预处理步骤。

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