نتایج جستجو برای: biological nutrient removal bnr
تعداد نتایج: 659511 فیلتر نتایج به سال:
The purpose of this study was to investigate whether artificial neural networks (ANN) are able to decode participants' conscious experience perception from brain activity alone, using complex and ecological stimuli. To reach the aim we conducted pattern recognition data analysis on fMRI data acquired during the execution of a binocular visual rivalry paradigm (BR). Twelve healthy participants w...
a biofilm sequencing batch reactor with a volume of 1.42 m3, nylon nets providing a 4,140 m2/m3 support area for biofilms and an automated operation with 8 hour cycles was studied. the duration of the experiment was 135 days. removal efficiencies e≥ 80% were obtained for carbonaceous matter, producing an effluent with 31±26.8 mg/l of filtered cod, 7±3.6 mg/l of bod5 and 12±3.2 mg/l of toc. the ...
For past so many years wetlands have served functions like providing habitat for aquatic and terrestrial plants and animals, for recreational activities and for treatment of polluted water. Both natural and constructed wetlands gave been used for treatment for wastewater from sewage, septic tanks, agricultural activities, industries, landfills and highways, etc. Treatment of wastewater in a wet...
Background and Aim: In this study, the removal of dye blue reactive-171 by combination of advanced oxidation processes UV/H2O2 and SBAR has been investigated. Methods: The efficiency of chemical and biological system was first investigated separately. In chemical system, the kind, power, initial dye concentration and hydrogen parasitize and in biological system, hydraulic detention time, aerati...
Dissolved iron (Fe) concentrations in the California coastal upwelling regime vary over two orders of magnitude (from ,0.05 to .5 nM), which leads to a wide range in Fe effects on phytoplankton growth. Fe-addition experiments are appropriate to use to assess the biological role of Fe in low-Fe areas, but other methods are needed in Fe-replete regions. We present experiments that use additions o...
Bottomland hardwood forests are highly productive ecosystems located along the floodplains of rivers and streams throughout the central and eastern United States (Hodges, 1994). These ecosystems provide important functions including hydrologic flux and storage, biological productivity, biogeochemical cycling and storage, decomposition and wildlife habitat (Richardson, 1994). Bottomland hardwood...
It was hypothesized that nutrient removal from waste water could be achieved by using methane oxidizing bacteria (melhan otrophs). Because methane is inexpensive. it can be used as an energy source to encourage bacterial growth to assimilate nitrogen and phos phorus and other trace elements. This initial feasibility study used syn thetic nutrient mixtures and secondary sewage effluent as fe...
the removal performance of total poly phenols and orthodiphenols (o-diphenols) content in olive mill waste (omw) was investigated with a three stages cross flow laboratory scale rotating biological contactor (rbc) in the present study. due to high cod and other pollutant in the original omw, physico-chemical treatment was effected for cod and other pollutant reduction prior to biological treatm...
Introduction A persistent problem of the generation of 3D tissues for therapeutic application is efficient nutrient supply and removal of waste products within complex constructs. Depending on the tissue to be reverse engineered, a more or less intense supply of substrates and oxygen must be provided, as diffusion processes are limiting as tissue thickness increases. Thus, the use of decellular...
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