· In particular, vertical flow constructed wetlands (VFCWs) appears to be a preferred mode because of their small footprint (Zhang et al., 2009) and good efficiency (Jia et al., 2010). Although satisfactory organic removal performances can be achieved in VFCWs treating low-strength wastewaters, the total nitrogen (TN) removal efficiency
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:Vertical Flow Constructed WetlandsVFCWsAbstract. This chapter presents VFCW experiments/applications on treating special wastewaters. These include a variety of industrial (tannery and textile), agro-industrial
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Alternative to conventional (i.e., the commonly used biological plants) wastewater treatment systems are presented which are appropriate for small communities and settlements. These systems are the natural treatment systems. The emphasis here is given on vertical downflow flow constructed wetlands (VF CWs). First, advantages and disadvantages of
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:Vertical Flow Constructed WetlandsPublish Year:2017 · The performance and temporal variation of hybrid vertical-subsurface flow constructed wetlands (VFCWs) in response to two-stage combinations of vertical upflow
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· For the purpose of enhancing the removal rate of nitrogen (N) and organic matters, intermittent aeration and carbon source were used in filled-and-drained vertical flow constructed wetlands (VFCWs). The results showed that the best removal of COD (74.16%), NH4+-N (93.56%), TN (86.88%), and NO3−-N (79.65%) was achieved in
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:Vertical Flow Constructed WetlandsWater TreatmentInfluent StrengthTreatment of Special Wastewaters in VFCWs. A. Stefanakis, C. Akratos, V. Tsihrintzis. Published 2014. Environmental Science. View via Publisher. Save to Library. Create
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· Vertical Flow Treatment Wetland (VF-TW) systems achieve high efficiencies in terms of carbon related parameters removals from domestic wastewaters. Nitrogen removal is also efficient but
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· Vertical-flow constructed wetlands (VFCWs) are predominant in France. They are characterized by the formation of a layer of sludge deposits at the surface of the filters originating from the percolation of raw wastewater (Molle 2014; Kim
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In this study, biochar was used as substrates in Vertical flow constructed wetlands (VFCWs) for enhancing the removal of contaminant from low C/N wastewaters with different influent strengths. The removal of organic matter and nitrogen in biochar-added and non-biochar-added VFCWs with different low C/N influent strengths were evaluated
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· Activated sludge reactor, susbsurface vertical-flow wetland and hybrid installation were studied for aerobic treatment and polishing of two types wastewater-pig slurry and landfill leachate.
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· Purpose Vertical-flow constructed wetland (VFCW) is a promising technique for wastewater treatment comparable to conventional wastewater treatment plants. The physical, chemical, and biological processes and interactions in a VFCW are highly coupled with water movement, and thus the performance of a VFCW to remove
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Decentralized domestic wastewater treatment using intermittently aerated vertical flow constructed wetlands: impact of influent strengths. Bioresource Technology ( IF 11.4 ) Pub Date : 2014-12-03 , DOI: 10.1016/j.biortech.2014.11.041
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:Vertical Flow Constructed WetlandsVFCWs14441448 201 Desalination Publications. All rihts reserved. Desalination and ater Treatment www.desater.com doi 10.5004dt.201.25 * orrespondin author. 14 201 5 April Performance of various media in vertical flow constructed wetland for the treatment of domestic
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· In this study, biochar was used as substrates in Vertical flow constructed wetlands (VFCWs) for enhancing the removal of contaminant from low C/N wastewaters with different influent strengths. The removal of organic matter and nitrogen in biochar-added and non-biochar-added VFCWs with different low C/N influent strengths were evaluated
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Desalination and Water Treatment www.deswater.com 162 (2019) 149–155 September doi: 10.5004/dwt.2019.24335 Advanced treatment of dairy industrial wastewater using vertical flow constructed wetlands Vahid Yazdania,*,
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:Vertical Flow Constructed WetlandsWater Treatment · The performance and temporal variation of four hybrid, intermittent loading, pilot-scale vertical flow constructed wetlands (VFCWs) were tested for treating
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· Sludge treatment in vertical flow constructed wetlands (VFCWs) is a promising alternative to conventional treatment, which provides adequate treatment at low-cost, while being energy efficient
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Treatment of Special Wastewaters in VFCWs 145 7.1 Treatment of Special Wastewaters 145 7.1.1 Tannery Modeling of Vertical Flow Constructed Wetlands 165 8.1 Introduction 165 8.2 Regression
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· According to water level, CWs can be classified as free water surface (FWS) CWs and subsurface flow (SSF) CWs which could be further divided into vertical flow (VF) and horizontal flow (HF) CWs. Among those kinds of CWs, VF CWs have been widely used for decentralized sewage treatment because of a higher oxygen transfer rate and
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· The vertical-flow constructed wetland (VFCW) is a promising engineering technique for removal of excess nutrients and certain pollutants from wastewaters. This study investigated the uptake and removal of total nitrogen (TN) by Cyperus alternifolius from domestic wastewaters in simulated VFCWs.
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· Constructed wetlands are recognized as a reliable technology for rural wastewater treatment. However, conventional constructed wetlands face problems with low pollutant removal efficiency and limited oxygen transfer capability. Therefore, a novel vertical flow constructed wetland (VFCW) system with drop aeration was developed in
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· The aim of this study is to evaluate the effects of and analyze the reasons for applying a resting operation to alleviate bioclogging in vertical flow constructed wetlands (VFCWs). In parallel, three groups of laboratory-scale VFCWs were continuously fed with prepared wastewater (BOD = 600 mg/L) at a relatively high hydraulic loading
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In this study, the removal performances of organic pollutants and nitrogen in vertical flow constructed wetlands (VFCWs) with and without intermittent aeration fed with different strengths of influent were evaluated as a possible treatment for decentralized domestic wastewater in northern China. The
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Constructed wetlands (CWs) are efficient in reducing excessive contamination from wastewaters. However, oxygen inside CW beds is frequently low especially when substrate clogging problems appear after long-term operation, and this may become a limited factor for the treatment of wastewaters. Aimed a
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:Vertical Flow Constructed WetlandsPublish Year:2013 · Effective solutions for wastewater treatment have been presented through the use of vertical flow constructed wetlands technology, emphasizing the low cost of
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VFCWs realisation costs are in the range of 50-110 €/m 2 depending by the design, the country, the availability of suitable material (i.e. filling media and waterproofing liner) in the region and the labour cost. The price of pre-treatment units and pipe connections has
Consulta · To date, various configurations of CWs such as horizontal flow, vertical flow, free water surface, subsurface, and hybrid ones have been reported very effective in Asian regions.
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· The performance response of eight vertical flow constructed wetlands (VFCWs) to different influent COD/N ratios and intermittent aeration in domestic wastewater treatment was investigated. Almost complete nitrification was obtained by intermittent aeration, which well developed alternate anaerobic and aerobic conditions for nitrification
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· Vertical flow constructed wetlands (VFCWs) are widely perceived as an efficient technology for wastewater treatment due to their advantages of low cost and easier maintenance and operation
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Introduction -- Constructed wetlands classification -- VFCW types -- VFCW components -- Treatment processes in VFCWs -- Domestic and municipal wastewater treatment -- Treatment of special wastewaters -- Modelling of vertical flow constructed wetlands
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