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Identifying Priority Research Questions for Decentralized Wastewater
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DOI：10.1021/acs.est.5c02138.png)
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Abstract
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Decentralized wastewater treatment and reuse represent critical infrastructure across the rural–periurban–urban continuum around the world. Effective, efficient, resilient, and equitable implementation of on-premise technologies and management systems is part of a One Water approach and necessary to protect public health and the environment, yet inconsistent delivery of essential public health services persists in many regions, including across states, tribes, and territories of the United States. We initiated a groundbreaking effort to understand challenges and to identify research opportunities related to the science and practice of decentralized wastewater. A horizon scanning exercise using a bottom up and transparent key questions approach was performed in which research needs were submitted by over 450 professionals working in academia, government, industry, and nonprofit organizations. We then further considered these research needs through facilitated focus group discussions and identified priority research questions through a consensus process during an in-person synthesis workshop. These key questions included technical and management topics, which were partitioned among six research categories: treatment, performance, and resource recovery; resiliency, efficacy, and sustainability; environmental quality and public health; assessment, monitoring, and operation and maintenance; implementation; and regulations, enforcement, and environmental justice. We offer recommendations to answer the priority research questions presented here; doing so promises to advance the science and improve the practice across rural–periurban–urban gradients.
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