Effect of plants and surface loading rate on the treatment efficiency of shallow subsurface constructed wetlands

Carballeira, T.; Ruíz, I.; Soto, M.

doi:10.1016/j.ecoleng.2016.01.038

Cited by 68 publications

(41 citation statements)

References 40 publications

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“…In the CWs without substrates, the retention of particulate material, removal of TSS, and the retention of TP and TKN were lower than in the CWs with substrates, probably because the particulate material is only retained by sedimentation and/or by the roots of the free‐floating macrophytes (Henares & Camargo, ). The highest removal rates of both inorganic forms of nitrogen, phosphorus and DKN in wetland Ec can be attributed to the uptake by the macrophytes, as previously documented (Carballeira et al., ; Henry‐Silva & Camargo, ; Kumari & Tripathi, ; Vera, García, Sáez, Moragas & Vidal, ). Aquatic macrophytes with great biomass and fast growth, like as E. crassipes and Pistia stratiotes , likely require more nutrients and, therefore, remove nutrients efficiently from the water column.…”

Section: Discussionsupporting

confidence: 72%

“…The efficiency of CWs depends on the type of system (e.g., horizontal vs. vertical flow; subsurface vs. surface flow; the arrangement of macrophytes in the wetland; the presence or absence of substrate), the limnological characteristics of the effluent, the local climate conditions, and also the species and nutritional requirements of macrophytes (Carballeira, Ruiz & Soto, ; Hernández‐Crespo, Oliver, Bixquert, Gargallo & Martín, ; Wang, Zhang, Dong, & Tan, ; Wu et al., ). In temperate regions, constructed wetlands for the treatment of aquaculture effluents commonly used emergent macrophytes (Vymazal, ; Wu et al., ) and these macrophytes require a substrate for fixation.…”

Section: Introductionmentioning

confidence: 99%

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The efficiency of free-floating and emergent aquatic macrophytes in constructed wetlands for the treatment of a fishpond effluent

2018

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Many studies have evaluated the efficiency of constructed wetlands (CWs) for the treatment of fishpond effluents, but only a few have compared between CWs with emergent and free-floating macrophytes and assessed the amount of nutrients removed only by the macrophytes. For this purpose, we performed an experiment during 113 days in which we treated a fishpond effluent using four different CWs:(i) with the free-floating macrophyte Eichhornia crassipes (Ec); (ii) without E. crassipes (WEc); (iii) with a substrate and the emergent macrophyte Typha domingensis (Td); (iv) with a substrate and without T. domingensis (WTd). To verify the efficiency of CWs, the removal rates of total suspended solids (TSS), dissolved (DKN) and total (TKN) Kjeldahl nitrogen, total inorganic nitrogen (TIN), total phosphorus (TP) and Porthophosphate (P-ORT) were analysed using ANOVA-rm. The removal of TP and TKN was higher in CWs with substrate than without substrate. The removal of P-ORT, TIN and DKN was higher in Ec compared to others CWs. The average removal of TSS in Ec (78.9%), WTd (77.4%) and Td (75.0%) was higher than in WEc (68.3%).The contribution of E. crassipes towards the removal of all forms of N and P was higher than of T. domingensis. This greater contribution of E. crassipes can be due to the higher biomass that this species gained in comparison with T. domingensis.

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Section: Discussionsupporting

confidence: 72%

Section: Introductionmentioning

confidence: 99%

The efficiency of free-floating and emergent aquatic macrophytes in constructed wetlands for the treatment of a fishpond effluent

2018

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“…Halophytes can be integrated in IMTA systems through modules that allow for sustained plant growth and water (re)circulation, and the 2 main structures used for that purpose are usually constructed wetlands (CWs) and aquaponics systems. CWs have proven to be efficient at removing a wide range of organic and inorganic substances from different wastewater sources (Verhoeven & Meuleman 1999, Imfeld et al 2009, Vymazal 2010, 2011, Shelef et al 2013) including aquaculture (de Lange et al 2013, Turcios & Papenbrock 2014, Carballeira et al 2016. Aquaponics systems, on the other hand, have been mostly experimented with freshwater setups (Somerville et al 2014, dos Santos 2016.…”

Section: Halophytes -The New Players In Sustainable Marine Aquaculturementioning

confidence: 99%

Unravelling the potential of halophytes for marine integrated multi-trophic aquaculture (IMTA)— a perspective on performance, opportunities and challenges

Custódio¹,

Villasante²,

Cremades³

et al. 2017

Aquacult. Environ. Interact.

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The present study critically analyses peer-reviewed literature addressing the potential of halophytes to remediate nutrient-rich effluents from marine and coastal aquaculture, as well as the potential for their economic valorization, from human consumption to an untapped source of valuable secondary metabolites with pharmaceutical potential. The growing body of evidence discussed in this review supports the perspective that halophytes can become a new source of nutrition and other high-value compounds and be easily incorporated into saltwater-based integrated multi-trophic aquaculture (IMTA) systems. In this context, halophytes act as extractors of dissolved inorganic nutrients, primarily nitrogen and phosphate, usually wasted in marine aquaculture farms. Phytoremediation using halophytes has been proven to be an efficient solution, and several ways exist to couple this practice with land-based marine aquaculture systems, namely through constructed wetlands and aquaponics. Focusing research on ecosystem-based approaches to aquaculture production will provide valuable data for producers and policy makers in order to improve decision making towards a sustainable development of this economic sector. Ecointensification of aquaculture through IMTA will potentially increase the overall productivity and resilience of the sector, and halophytes, in particular, are on the verge of becoming key players for the diversification and promotion of land-based IMTA. This work specifically documents the uncharted potential of Halimione portulacoides, an important halophyte in European salt marsh ecosystems, as a new extractive species for IMTA.

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“…Fuchs et al (2011) found lesser removal rate of TN and P using phragmites Australis which was as 35.6 % and 31% respectively. As indicated by Carballeira et al (2016), P.…”

Section: Phragmites Australismentioning

confidence: 95%

Seasonal Applicability of Three Plant Constructed Wetlands for Nutrient Removal in Pilot Scale

Aminsharei

Borghei

Arjomandi

et al. 2016

Preprint

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The main objective of this study was to compare the removal efficiency of nutrients using Lactuca sativa, Medicago sativa and Phragmites australis in subsurface flow constructed wetlands with horizontal flow. In order to test water quality, fabricated reactors designed and the plants cultivated in the soil while their root were inside the wastewater. A long time study carried out from spring till end of autumn (9 months) in order to evaluate the difference in removal rate based on the seasonal changes. The highest removal rate was during summer which followed by spring and autumn. Thus, the effect of plants on the removal efficiency of organic matter (COD, BOD), TSS and nutrient (P and TN) appeared to be dependent on the seasonal growth. Phragmites australis the most sensitive species in order the removal of nutrient from wastewater.

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Effect of plants and surface loading rate on the treatment efficiency of shallow subsurface constructed wetlands

Cited by 68 publications

References 40 publications

The efficiency of free-floating and emergent aquatic macrophytes in constructed wetlands for the treatment of a fishpond effluent

The efficiency of free-floating and emergent aquatic macrophytes in constructed wetlands for the treatment of a fishpond effluent

Unravelling the potential of halophytes for marine integrated multi-trophic aquaculture (IMTA)— a perspective on performance, opportunities and challenges

Seasonal Applicability of Three Plant Constructed Wetlands for Nutrient Removal in Pilot Scale

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