Production of biostable drinking water using a lab-scale biological trickling filter enriched with hydrogen-oxidizing bacteria

IF 10.4 1区 工程技术 Q1 ENGINEERING, CHEMICAL npj Clean Water Pub Date : 2024-10-03 DOI:10.1038/s41545-024-00396-5
Jorien Favere, Fien Waegenaar, Mingsheng Jia, Karel Folens, Milan Verhoeven, Elien Balliu, Andreja Rajkovic, Bart De Gusseme, Nico Boon
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Abstract

Safeguarding the drinking water quality remains a challenge from the production site to the tap. Alternatively to chemical disinfection, biostable drinking water could serve as a more sustainable approach to produce microbially safe drinking water and to maintain the microbial quality in the drinking water distribution system (DWDS). In this study, the potential of hydrogen-oxidizing bacteria (HOB) to produce biostable drinking water was examined in a continuous trickling filter supplied with hydrogen gas. A biofilm was naturally enriched for 5 months and the bacterial regrowth, invasion potential, and nutrient composition of the water were determined. Treatment improved the biostability significantly, and it is hypothesized that nutrient limitation, especially phosphorous, was a driving force. As a result, the regrowth and invasion potential were lowered, as shown with specific biostability bioassays. Overall, this study demonstrates the proof-of-concept of HOB for producing biostable drinking water through nutrient limitation.

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利用富含氢氧化细菌的实验室规模生物滴流过滤器生产生物稳定饮用水
从生产现场到水龙头,饮用水水质的保障仍然是一项挑战。除了化学消毒,生物稳定饮用水可以作为一种更可持续的方法来生产微生物安全的饮用水,并保持饮用水分配系统(DWDS)中的微生物质量。本研究考察了氢氧化细菌(HOB)在供应氢气的连续滴流过滤器中生产生物稳定饮用水的潜力。对生物膜进行了为期 5 个月的自然富集,并测定了水中的细菌再生、入侵潜力和营养成分。经过处理后,生物稳定性有了明显改善,据推测,营养限制,尤其是磷,是一个驱动力。因此,正如特定的生物稳定性生物测定所显示的那样,再生和入侵潜力降低了。总之,这项研究证明了 HOB 通过营养限制生产生物稳定饮用水的概念。
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来源期刊
npj Clean Water
npj Clean Water Environmental Science-Water Science and Technology
CiteScore
15.30
自引率
2.60%
发文量
61
审稿时长
5 weeks
期刊介绍: npj Clean Water publishes high-quality papers that report cutting-edge science, technology, applications, policies, and societal issues contributing to a more sustainable supply of clean water. The journal's publications may also support and accelerate the achievement of Sustainable Development Goal 6, which focuses on clean water and sanitation.
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