Greenhouse gas emission in constructed wetlands for wastewater treatment: A review

Mander, Ülo; Dotro, Gabriela; Ebie, Yoshitaka; Towprayoon, Sirintornthep; Chiemchaisri, Chart; Nogueira, S. F.; Baasansuren, Jamsranjav; Kasak, Kuno; Truu, Jaak; Tournebize, Julien; Mitsch, William J.

doi:10.1016/j.ecoleng.2013.12.006

Cited by 257 publications

(124 citation statements)

References 117 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…These results suggest that the main ammonia removal mechanism was nitrification [35]. The efficiencies regarding COD and NH 4 + removals of VFmulch with the continuous feeding (Table 4) are comparable to those achieved by Zhao et al [18] in the treatment of anaerobic digested swine wastewater with a wood-chip-framework soil infiltrator. These authors used LR of COD and NH 4 + LR of 26-118 g/m 2 ·day and 22-106 g/m 2 ·day and achieved removals of 67.5-48% and 82-78%, respectively.…”

Section: Effect Of Influent Feeding Mode (Pulse Vs Continuous)supporting

confidence: 70%

“…BOD 5 (henceforth BOD) can include nitrification as no inhibitor was added. NH 4 + , and Na + ions were determined with selective electrodes from Crison (Barcelona, Spain). PO 4 3− ions were dissolved, molybdate-reactive phosphates.…”

Section: Water Analysismentioning

confidence: 99%

“…The cost of domestic wastewater treatment with CWs varies with land price but it can be about 2-3 times lower than that of conventional treatment processes [3]. Besides being highly efficient and robust, CWs also add aesthetic, ecological and cultural values [4]. Life cycle comparisons of CWs vs. activated sludge technology have shown that the former emit less greenhouse gases and cause less environmental impact [5].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Effect of Substrate, Feeding Mode and Number of Stages on the Performance of Hybrid Constructed Wetland Systems

Melián

Borreguero-Fabelo

Araña

et al. 2018

Water

View full text Add to dashboard Cite

Abstract:A hybrid constructed wetland mesocosm has been used for the treatment of raw urban wastewater. The first stage was a mulch-based, subsurface, horizontal flow constructed wetland (HF). The HF achieved good removals of COD (61%; 54 g/m 2 ·day) and Total Suspended Solids (84%; 29 g/m 2 ·day). The second stage was composed of vertical flow constructed wetlands (VF) that were employed to study the effect of substrate (gravel vs. mulch), feeding mode (continuous vs. intermittent) and the number of stages (1 vs. 2) on performance. High hydraulic and organic surface loadings (513-583 L/m 2 ·day and 103-118 g/m 2 ·day of COD) were applied to the reactors. The mulch was more efficient than gravel for all the parameters analyzed. The continuous feeding allowed a 3 to 6-fold reduction of the surface area required.

show abstract

Section: Effect Of Influent Feeding Mode (Pulse Vs Continuous)supporting

confidence: 70%

Section: Water Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Effect of Substrate, Feeding Mode and Number of Stages on the Performance of Hybrid Constructed Wetland Systems

Melián

Borreguero-Fabelo

Araña

et al. 2018

Water

View full text Add to dashboard Cite

show abstract

“…[28][29][30] In general, the longer the process was, the better was the treatment efficiency. This result was consistent with the finding by Mander et al [31] Vymazal [32] also proved that all types of hybrid wetlands were more efficient in TN removal than single horizontal-flow or vertical-flow wetlands. Thus, the comprehensive benefits of vertical-flow .…”

Section: Upgrading Assessment Results and Discussion On Improving Watsupporting

confidence: 83%

Performance Evaluation of Constructed Wetlands Treating Wastewater Treatment Plant Effluent in Taihu Lake, China

Shen

Huang

Zhang

et al. 2017

CLEAN Soil Air Water

View full text Add to dashboard Cite

Constructed wetlands are often used for advanced treatment of the secondary effluent of municipal wastewater treatment plants (WWTPs). Through assessing wetlands based on economic, technical, environmental, and social impacts, an optimal process is selected. In this study, a set of assessment methods for wetland treatment technology is established: The analytic hierarchy process (AHP) is used to establish the evaluation index system; the entropy weight method is employed to calculate the index weights; and the preference ranking organization method for enrichment evaluation (PROMETHEE) is utilized for ranking of the selected treatment technologies. Then four processes applied in Taihu Lake basin, China are evaluated. The results show the following ranking: Vertical-flow wetlandecological pond-surface-flow wetland-horizontal-flow wetland, vertical-flow wetland-horizontal-flow wetland, ecological pond-horizontal-flow wetlandsurface-flow wetland, and ecological ditch-ecological pond. The wetland exhibits certain universality and space portability with regard to treatment of municipal WWTP effluent. From the view of comprehensive benefits, the ranking of the treatment technology based on the vertical-flow wetland is high (Φ values between 0.0224 and 0.0349), whereas that based on the ecological pond is low (Φ values between À0.2086 and À0.2652), owing to the mechanism of the process itself and the role of microorganisms in the system. Moreover, for organic matter removal, a vertical-flow wetland process is recommended (48%), whereas for the removal of N contamination, an integrated-flow wetland process is suggested (31.2% for NH 3 -N, 32.4% for TN removals).

show abstract

“…On the other hand, the climate of the Mediterranean basin, which implies warmer T of the water and, during growing season, the larger and constant growth of the common reed, may justify the high abatement found for this region compared with other European experiences [35]. The abatement process of BOD 5 is mainly carried out by bacterial activity (aerobic and anaerobic) with greenhouse gases production and emission to the atmosphere [41,42], and by the sedimentation and filtration of particulate organic matter [43]. In this respect the assisted aeration during the first year of the study combined within common reed activity was effective [44].…”

Section: Abatement Of Organic Mattermentioning

confidence: 99%

Domestic Wastewater Depuration Using a Horizontal Subsurface Flow Constructed Wetland and Theoretical Surface Optimization: A Case Study under Dry Mediterranean Climate

Andreo-Martínez

García-Martínez

Almela

2016

Water

View full text Add to dashboard Cite

Abstract:The wastewater generated by isolated houses without access to public sewers can cause environmental problems, like the contamination of aquifers with nitrates and phosphates, as occurs in southeastern Spain. The effectiveness of a previously built horizontal subsurface flow constructed wetland (HF-CW) was studied over two years as a possible solution. This HF-CW measured 27 m 2 ; it was planted with Phragmites australis (Cav.) Trin. ex Steud ssp. altissima and the parameters studied were those required by European Union (EU) legislation and adopted by Spain. Average abatement efficiency rates, for the first and the second year of study, were: biochemical oxygen demand over five days (BOD 5 because its content in influent wastewater was very low and they appear mainly from influent NH 4 + -N, as a result of purification processes carried out in the HF-CW bed. The abatement rates make the system suitable to produce discharges into the environment in accordance with Spanish law. It is noteworthy that the HF-CW patch suffered an episode of bed drying during the summer of 2013, whereby the causes were related to system oversizing and high evapotranspiration in the area. As a consequence, the decrease in the abatement of water pollutants during the second year can be attributed to the creation of preferential water flow paths and short circuits through the constructed wetland (CW) bed. As a result of the oversizing of the CW, a theoretical resizing based on BOD 5 , TSS, TN or TP is proposed. The calculated values for the redesign were: 5.22 m 2 considering DBO 5 , 0.18 m 2 considering TSS, 10.14 m 2 considering TN and 23.83 m 2 considering TP. Considering the area where the HF-CW was located and in accordance with Spanish law for non-sensitive areas (no TN or TP requirements for wastewater discharge), BOD 5 is the most appropriate parameter for design; it is 5.2 times lower than the HF-CW initially built and without risk of bed drying.

show abstract

Greenhouse gas emission in constructed wetlands for wastewater treatment: A review

Abstract: false2016-03-16T23:02:09

Cited by 257 publications

References 117 publications

Effect of Substrate, Feeding Mode and Number of Stages on the Performance of Hybrid Constructed Wetland Systems

Effect of Substrate, Feeding Mode and Number of Stages on the Performance of Hybrid Constructed Wetland Systems

Performance Evaluation of Constructed Wetlands Treating Wastewater Treatment Plant Effluent in Taihu Lake, China

Domestic Wastewater Depuration Using a Horizontal Subsurface Flow Constructed Wetland and Theoretical Surface Optimization: A Case Study under Dry Mediterranean Climate

Contact Info

Product

Resources

About