Comparison of anthracite and GAC biofilter performance for surface-water manganese removal

AWWA water science Pub Date : 2022-12-21 DOI:10.1002/aws2.1314

Ashley N. Kent, Martin Earle, Jacqueline Iannuzzi, Cynthia Ha, Lyda Hakes, Amina Stoddart, William Knocke, Graham Gagnon

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引用次数: 1

Abstract

Alameda County Water District has observed increased biofilter effluent manganese concentrations during winter operations. To investigate manganese removal across surface water biofilters during cold-water conditions, trends were analyzed between water temperature and manganese removal across multiple testing scales, multiple biofilter influent water qualities, and both anthracite and GAC media. During acclimation of new biofilters, 100% removal of manganese was observed sooner across both anthracite and GAC biofilters brought online at 20°C compared to 12°C. Acclimation at 12°C required 18 extra days for the GAC biofilters and 48 additional days for the anthracite biofilters. For fully acclimated biofilters, a decrease in manganese removal across both GAC and anthracite biofilters at temperatures below 15°C was observed. However, greater and more consistent manganese removal was observed across GAC compared to anthracite biofilters. Performance differences between locations also suggest that operational and water quality conditions also likely affect manganese removal.

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无烟煤与GAC生物滤池去除地表水锰的性能比较

阿拉米达县水区在冬季作业期间观察到生物过滤器出水锰浓度增加。为了研究冷水条件下地表水生物过滤器对锰的去除效果，研究人员分析了不同测试尺度、不同生物过滤器进水水质、无烟煤和GAC介质中水温与锰去除率之间的趋势。在新生物过滤器的驯化过程中，与12°C相比，在20°C时，无烟煤和GAC生物过滤器都能更快地100%去除锰。在12°C下驯化GAC生物过滤器需要额外18天，无烟煤生物过滤器需要额外48天。对于完全驯化的生物过滤器，在温度低于15°C时，GAC和无烟煤生物过滤器的锰去除率均有所下降。然而，与无烟煤生物过滤器相比，在GAC上观察到更大、更一致的锰去除。地点之间的性能差异也表明操作条件和水质条件也可能影响锰的去除。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

AWWA water science

CiteScore

4.40

自引率

0.00%

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