在城市污水处理厂中采用改良型综合物理高级一级处理技术来提高颗粒有机碳的去除率。

IF 2.5 4区 环境科学与生态学 Q3 ENGINEERING, ENVIRONMENTAL
Behnam Askari Lasaki, Peter Maurer, Harald Schönberger
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引用次数: 0

摘要

为了寻求一种既经济又环保的处理方法,我们研究了微筛 (MS) 技术与初级沉淀池 (PST) 相结合作为物理高级初级处理 (APT) 的适用性,以提高城市污水中颗粒有机碳 (POC) 的去除率。在德国斯图加特 Büsnau 污水处理厂的 PST 下游连续运行了一个试验装置,其中包括一个可调节为不同网孔(包括 20 微米和 15 微米)的改良 MS,并对其进行了半年多的监测。采用的策略包括随时间变化的反冲洗和 MS 渗透液的再循环,以尽可能多地去除主要处理废水中的 POC,从而延长 MS 的应用时间。最佳配置(PST + 15-μm MS)的浊度最大去除率为 90%,总悬浮固体 (TSS) 最大去除率为 90%,总化学需氧量 (TCOD) 最大去除率为 80%。这些结果意义重大,因为传统的生化 APT(包括使用铁盐或铝盐进行混凝-絮凝,然后进行微筛或沉淀)等不太环保的方法对这些参数的去除率与之相当。不过,本研究的结果表明,单独的物理 APT 应用可以产生同等质量的废水,而且占地面积更小,同时还能保持经高级初级处理的废水适合生物处理。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
A modified integrated physical advanced primary treatment to enhance particulate organic carbon removal in municipal wastewater treatment plants.

In the pursuit of a treatment approach that is both cost-effective and environmental-friendly, the applicability of microscreen (MS) techniques coupled with a primary sedimentation tank (PST) as a physical advanced primary treatment (APT) to enhance the removal of particulate organic carbon (POC) from municipal wastewater was investigated. A pilot unit, including a modified MS, adjustable to different meshes (including 20 and 15 μm) was operated continuously downstream to the PST at the Büsnau wastewater treatment plant in Stuttgart, Germany, and monitored for more than half a year. A strategy involving time-dependent backwashing and recirculation of MS permeate was employed to remove as much POC as possible from primarily treated wastewater, thereby extending the application of the MS. The optimal configuration, PST + 15-μm MS, achieved maximum removal efficiencies of 90% for turbidity, 90% for total suspended solids (TSS), and 80% for total chemical oxygen demand (TCOD). These results are significant, as comparable removal levels for these parameters were conventionally achieved using less eco-friendly methods such as physiochemical APT, including coagulation-flocculation with iron or aluminum salts followed by microscreening or sedimentation. However, this study's findings ascertained that solo physical APT applications could produce equivalent effluent quality with a much smaller footprint while keeping the advanced primary treated wastewater suitable for biological treatment.

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来源期刊
Water Science and Technology
Water Science and Technology 环境科学-工程:环境
CiteScore
4.90
自引率
3.70%
发文量
366
审稿时长
4.4 months
期刊介绍: Water Science and Technology publishes peer-reviewed papers on all aspects of the science and technology of water and wastewater. Papers are selected by a rigorous peer review procedure with the aim of rapid and wide dissemination of research results, development and application of new techniques, and related managerial and policy issues. Scientists, engineers, consultants, managers and policy-makers will find this journal essential as a permanent record of progress of research activities and their practical applications.
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