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constructedwetlands, etc ; algorithms; meteorological parameters; neural networks; pollutants; prediction; regression analysis; water quality; water quantity; Show all 9 Subjects
Abstract:
... Data-driven approaches that make timely predictions about pollutant concentrations in the effluent of constructed wetlands are essential for improving the treatment performance of constructed wetlands. However, the effect of the meteorological condition and flow changes in a real scenario are generally neglected in water quality prediction. To address this problem, in this study, we propose an app ...
constructedwetlands, etc ; Comamonas; biochar; denitrification; greenhouse gas emissions; greenhouse gases; methane production; methanotrophs; nitrates; oxidation; sawdust; sludge; walnuts; China; Show all 14 Subjects
Abstract:
... In this study, the biochar (BC) produced from sawdust, sludge, reed and walnut were used to support sulfidation of nano-zero-valent-iron (S-nZVI) to enhance nitrate (NO3−-N) removal and investigate the impact on greenhouse gas emissions. Batch experiment results showed the S-nZVI/BCₛₐwdᵤₛₜ ₍₂:₁, ₅₀₀₎, S-nZVI/BCₛₗᵤdgₑ ₍₂:₁, ₉₀₀₎, S-nZVI/BCᵣₑₑd ₍₂:₁, ₇₀₀₎, and S-nZVI/BC wₐₗₙᵤₜ ₍₂:₁, ₇₀₀₎ respectivel ...
... With the rapid expansion of livestock production, the amount of livestock wastewater accumulated rapidly. Lack of biodegradable organic matter makes denitrification of livestock wastewater after anaerobic digestion more difficult. In this study, Myriophyllum aquaticum constructed wetlands (CWs) with efficient nitrogen removal performance were established under different carbon/nitrogen (C/N) ratio ...
constructedwetlands, etc ; computer software; evolution; Show all 3 Subjects
Abstract:
... Clogging has attracted increasing attention as one of the key problems affecting the development and application of constructed wetland (CW) technology. However, there is a lack of systematic research on the evolution history, hot spots, frontiers and direction classification of CW clogging, lack of research papers on how to effectively solve clogging, and some mixed use in methods and concepts. T ...
constructedwetlands, etc ; aeration; gravel; greenhouse gases; zeolites; Show all 5 Subjects
Abstract:
... Aeration has been widely used in constructed wetland (CWs). However, research on greenhouse gas (GHG) emissions and measures to control GHG emissions in aerated CWs is still limited. Therefore, lab-scale aerated CWs were established in this study to explore effects of Fe–C and zeolite on GHG emissions from aerated CWs. Four groups of CWs were filled with gravel (CW-A), zeolite (CW–B), ferric-carbo ...
constructedwetlands, etc ; ecosystems; habitats; lakes; oviposition; Algeria; Show all 6 Subjects
Abstract:
... The breeding behavior of Northern Shoveler (Spatula clypeata) was studied from January 2019 to March 2021 in Tiffech lake, an artificial wetland, in Souk Ahras Province, Northeastern Algeria. On this ecosystem, egg-laying occurred from earlier January to mid-March. In this study, there was a positive correlation between the egg-laying period and the number of active nests. The mean incubation peri ...
constructedwetlands, etc ; industry; models; regression analysis; risk; sewage treatment; China; Show all 7 Subjects
Abstract:
... Accurately revealing and predicting the presence and risks of per-/poly-fluoroalkyl substances (PFASs) in constructed wetlands (CWs) is great significant for the construction and management of CWs, but very challenging. In this work, a novel fate and transport model was for the first time established to evaluate the spatially continuous distribution and environmental risks of PFASs among multi-med ...
constructedwetlands, etc ; Trichococcus; energy metabolism; equations; pH; pollution control; rhizosphere; technology; Show all 8 Subjects
Abstract:
... Constructed wetlands (CWs) are widely considered as resilient systems able to adapt to environmental perturbations. Little attention has been paid, however, to microbial dynamics when CWs withstand and recover from external shock. To understand the resilience of CWs, this study investigated rhizosphere microbial dynamics when CWs were subjected to influent COD perturbation (200 mg/L-1600 mg/L). Re ...
constructedwetlands, etc ; Chrysopogon zizanioides; detergents; phosphates; rhizosphere; smell; wastewater; wastewater treatment; Show all 8 Subjects
Abstract:
... The car wash wastewater has a proportion of detergent and it can cause considerable impacts to pollute the environment and health if they are not processed in well. SSVF CW is one of an alternative wastewater treatment, because it has the advantage such as wastewater flowing below the surface of the media so it reduces the smell of wastewater. The objective of this study was to determine the remov ...
constructedwetlands, etc ; anaerobic digestion; biochar; biomass; green chemistry; pH; phosphorus; pyrolysis; risk; soil; Show all 10 Subjects
Abstract:
... Coupling anaerobic digestion with pyrolysis (AD–pyrolysis) has drawn increasing attention for the treatment of organic solid wastes. To evaluate the feasibility of AD–pyrolysis to reclaim phosphorus (P) from wetland plants, pyrolysis and AD–pyrolysis were used to dispose of wetland plants at different temperatures (300, 500, and 700 °C). The biochars derived from pyrolysis (TBs) showed a high pH a ...
constructedwetlands, etc ; air; ammonium; ammonium nitrogen; pollution control; soil pollution; water; water treatment; Show all 8 Subjects
Abstract:
... A hybrid system integrated by anaerobic filter–baffled subsurface horizontal constructed wetland (AFwet) was studied for treating polluted channel water, varying the hydraulic retention time (HRT) from 8 to 2 days. A conventional wetland (CW) and baffled conventional wetland (bCW) were used as control systems. The higher COD and ammonium nitrogen removal efficiencies were achieved at HRT of 8 days ...
constructedwetlands, etc ; fecal bacteria; phytoremediation; porous media; pumice; wastewater; wastewater treatment; water pollution; Show all 8 Subjects
Abstract:
... One of the ways to reduce the amount of wastewater pollution is the use of constructed wetlands. In this research, the performance of a hybrid constructed wetland with pumice ore and vetiver plant on urban wastewater has been investigated. Hybrid wetlands with these specifications were constructed in the vicinity of wastewater treatment at the Isfahan University of Technology. To evaluate the perf ...
constructedwetlands, etc ; adsorption; biomass; filtration; life cycle assessment; plant growth; reproduction; synergism; wastewater treatment; Show all 9 Subjects
Abstract:
... Constructed wetlands (CWs) are economical, efficient, and sustainable wastewater treatment method. Substrates in CWs inextricably link with the other key components and significantly influence the performance and sustainability of CWs. Gradually, CWs have been applied to treat more complex contaminants from different fields, thus has brought forward new demand on substrates for enhancing the perfo ...
constructedwetlands, etc ; Geobacter; ammonia; bioelectrochemistry; genes; industrial wastewater; microbial biomass; nitrates; nitrogen; oxidation; research; water; Show all 12 Subjects
Abstract:
... Constructed wetlands (CWs) integrated with the bioelectrochemical system (BES-CW) to stimulate bio-refractory compounds removal holds particular promise, owing to its inherent greater scale and well-recognized environmentally benign wastewater advanced purification technology. However, the knowledge regarding the feasibility and removal mechanisms, particularly the potential negative effects of bi ...
constructedwetlands, etc ; acclimation; bioaccumulation; biodegradation; biofilm; biosorption; cost effectiveness; hydrolysis; microalgae; photolysis; technology; volatilization; wastewater; Show all 13 Subjects
Abstract:
... This study reviews the development of the ability of microalgae to remove emerging contaminants (ECs) from wastewater. Contaminant removal by microalgae-based systems (MBSs) includes biosorption, bioaccumulation, biodegradation, photolysis, hydrolysis, and volatilization. Usually, the existence of ECs can inhibit microalgae growth and reduce their removal ability. Therefore, three methods (acclima ...
constructedwetlands, etc ; estuaries; eutrophication; macrophytes; marine pollution; nutrient uptake; sediments; stormwater; surface area; urban runoff; Show all 10 Subjects
Abstract:
... This study investigated the nutrient removal efficiency of a constructed wetland (CW) piloted to treat urban runoff before entering an estuary. Physico-chemical, dissolved inorganic nutrient (DIN and DIP), and stormwater inflow volume data were measured. The CW removal efficiency of DIN was negligible (5% uptake), while it acted as a consistent source of DIP (68% efflux) to the receiving estuarine ...
... Numerous studies have been conducted on the advanced treatment of wastewater treatment plant (WWTP) effluent by constructed wetlands (CWs); however, no studies have focused on the effect of the naturalization function of CWs on WWTP tailwater, i.e., reducing imbalances in the elemental composition and microbial community, compared with natural surface water (NSW). Therefore, the possible naturaliz ...
constructedwetlands, etc ; Thauera; Thiobacillus; activated carbon; adhesion; community structure; denitrification; nitrogen; porosity; pyrite; wastewater; water treatment; Show all 12 Subjects
Abstract:
... Deep nitrogen removal from low-carbon wastewater is a pressing water treatment challenge as of yet. Eight sets of vertical-flow constructed wetland (VFCW) intensified by pyrite were designed and applied to treat with low C/N ratio wastewater in this research. The results showed that the addition of pyrite (100% added) significantly promoted TN removal with an efficiency higher than 27.05% under lo ...
... Microorganisms act as both the source and sink of methane, a potent greenhouse gas, thus making a significant contribution to the environment as an important driver of climate change. The rhizosphere and phyllosphere of plants growing in natural (mangroves) and artificial wetlands (flooded agricultural ecosystems) harbor methane-utilizing bacteria that oxidize methane at the source and reduce its ...
... Cooperation between Phosphate and Glycogen Accumulating Organisms (PAOs and GAOs) plays a pivotal role in nutrients removal in simultaneous nitrification endogenous denitrification and phosphorous removal (SNEDPR) systems. Recent findings have expanded the application of SNEDPR from activated sludge system to constructed wetland (CW). However, how to regulate competition between PAOs and GAOs in S ...