نتایج جستجو برای: nutrient removal
تعداد نتایج: 207854 فیلتر نتایج به سال:
Danish model trout farms (MTFs) use stream-like constructed wetlands for effluent polishing, and the industry is keen to improve wetland removal efficiency. To facilitate this, we examined longitudinal seasonal nutrient removals in an MTF with a hydraulic retention time (HRT) of 1.7 d, free water surface (FWS) area 7510 m 2 , volume 6008 3 . Biweekly, 24-h composite samples were obtained 1 yr a...
Nutrient availability and herbivory control the biomass of primary producer communities to varying degrees across ecosystems. Ecological theory, individual experiments in many different systems, and system-specific quantitative reviews have suggested that (i) bottom-up control is pervasive but top-down control is more influential in aquatic habitats relative to terrestrial systems and (ii) bott...
Four wetland plant species (Scirpus validus, Carex lacustris, Phalaris arundinacea, and Typha latifolia) were grown in monoculture and as a four-species mixture to compare effectiveness of nutrient removal in controlled 18.93-l outdoor subsurface treatment wetland microcosms. A nutrient treatment that mimicked single-resident domestic effluent consisted of two levels of nitrogen (N) and phospho...
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