Decentralized Domestic Sewage Treatment Using an Integrated Multi-Soil-Layering and Subsurface Wastewater Infiltration System
نویسندگان
چکیده
In this study, an integrated multi-soil-layering and subsurface wastewater infiltration (MSL-SWI) system was developed for decentralized domestic sewage treatment under high hydraulic loading rates (HLRs). To improve sustainable nitrogen removal, the influence of intermittent operation shunt distributing on performance MSL-SWI systems investigated. The optimal performance—with removal efficiencies 93.41% chemical oxygen demand, 97.91% total phosphorus, 74.02% ammonia nitrogen, 73.56% nitrogen—was achieved using both HLR 0.3 m3 m?2 d?1. activity microbial functional genes (i.e., amoA, nirK, nirS, nosZ, anammox 16S rRNA) their relationships with transformation were further analyzed in different layers system. results imply that nitrification anaerobic ammonium oxidation MSL section coupled denitrification SWI contribute to main mechanisms removal. summary, not only operate efficiency HLRs, but contaminant is also stable sustainable, which are promising properties areas where land resources limited.
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ژورنال
عنوان ژورنال: Water
سال: 2021
ISSN: ['2073-4441']
DOI: https://doi.org/10.3390/w13040431