Application of Ice Pigging in a Drinking Water Distribution System: Impacts on Pipes and Bulk Water Quality

IF 10.1 1区工程技术 Q1 ENGINEERING, MULTIDISCIPLINARY Engineering Pub Date : 2024-09-01 DOI:10.1016/j.eng.2023.09.016

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Abstract

Ice pigging is an emerging technique for pipe cleaning in drinking water distribution systems. However, substantial confusion and controversy exist on the potential impacts of ice pigging on bulk water quality. This study monitored the microstructural features and composition of sediments and microbial community structures in bulk water in eight multimaterial Chinese networks. Chloride concentration analysis demonstrated that separate cleaning of pipes with different materials in complex networks could mitigate the risk of losing ice pigs and degrading water quality. The microstructural and trace element characterization results showed that ice pigs would scarcely disturb the inner surfaces of long-used pipes. The bacterial richness and diversity of bulk water decreased significantly after ice pigging. Furthermore, correlations were established between pipe service age, temperature, and chloride and total iron concentrations, and the 15 most abundant taxa in bulk water, which could be used to guide practical ice pigging operations.

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冰清管在饮用水分配系统中的应用:对管道和散装水质的影响

冰清管是一种新兴的饮用水分配系统管道清洗技术。然而，冰清管对散装水质的潜在影响存在着大量的困惑和争议。本研究监测了中国8个多物质网络中散装水中沉积物的微观结构特征、组成和微生物群落结构。氯化物浓度分析表明，在复杂的管网中，用不同的材料分别清洗管道，可以降低冰猪丢失和水质下降的风险。显微组织和微量元素表征结果表明，冰猪几乎不会干扰长期使用的管道的内表面。冰清管后散装水细菌丰富度和多样性显著降低。此外，还建立了管道使用年限、温度、总铁和氯化物浓度与散装水中15个最丰富的分类群之间的相关性，可用于指导实际冰清管作业。

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来源期刊

Engineering Environmental Science-Environmental Engineering

自引率

1.60%

发文量

335

审稿时长

35 days

期刊介绍： Engineering, an international open-access journal initiated by the Chinese Academy of Engineering (CAE) in 2015, serves as a distinguished platform for disseminating cutting-edge advancements in engineering R&D, sharing major research outputs, and highlighting key achievements worldwide. The journal's objectives encompass reporting progress in engineering science, fostering discussions on hot topics, addressing areas of interest, challenges, and prospects in engineering development, while considering human and environmental well-being and ethics in engineering. It aims to inspire breakthroughs and innovations with profound economic and social significance, propelling them to advanced international standards and transforming them into a new productive force. Ultimately, this endeavor seeks to bring about positive changes globally, benefit humanity, and shape a new future.