Bacterial communities and enzymatic activities in the vegetation-activated sludge process (V-ASP) and related advantages by comparison with conventional constructed wetland

Yuan, Jiajia; Dong, Wenyi; Sun, Feiyun; Zhao, Ke; Du, Changhang; Shao, Yunxian

doi:10.1016/j.biortech.2016.08.095

Cited by 16 publications

(4 citation statements)

References 43 publications

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“…The vegetation not only absorb pollutants from wastewater but their roots prevent wastewater from taking preferential paths in the substrate that can result to hydraulic short circuiting which would consequently reduce Environmental Management and Sustainable Development ISSN 2164-7682 2017 the retention time in the wetlands (Stottmeisteret al, 2003;Sehar et al, 2015). The roots also provide a large surface area for attachment of micro-organisms that degrade the organics in the wastewater (Wu et al, 2014;Yuan et al, 2016). The use of aquatic plants is thus becoming increasingly common in wastewater management as it integrates treatment, recycling and re-uses (Lishenga et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Effectiveness of the Horizontal, Vertical and Hybrid Subsurface Flow Constructed Wetland Systems in Polishing Municipal Wastewater

Koech

Otieno

Karuku

et al. 2017

EMSD

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This study aimed at comparing the performance of horizontal, vertical and hybrid subsurface flow system in polishing wastewater effluent from the maturation pond at Gusii wastewater treatment plant, Kenya. The treatments were monitored for six weeks duration for chemical oxygen demand, total suspended solids, total nitrogen and total phosphorous against Kenya’s National Environmental Management Authority standards for effluent discharge. Among the systems planted with Vetiver grass, the hybrid subsurface flow system significantly removed the pollutants more efficiently than the single operated systems. The Vetiver planted hybrid subsurface flow wetland systems achieved the highest removal of COD, TN, TP and TSS at 82.4, 87.9, 65 and 94.6%, respectively as compared to other wetland systems. The planted vertical subsurface flow removed COD, TN and TP at 72.9, 75.7, and 50.7%, respectively more efficiently than the horizontal subsurface flow system that achieved removal of COD, TN and TP at 65.3, 70.0 and 43.8%, respectively. The planted horizontal subsurface flow wetland however showed better TSS removal at 89.9% compared to 83.2% achieved by vertical subsurface flow system. The unplanted systems exhibited a similar trend whereby the hybrid subsurface flow systems achieved better performance than the single systems though with significantly (P≤0.05) lower organics and nutrients removal efficiencies compared to the planted systems.

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Section: Introductionmentioning

confidence: 99%

Effectiveness of the Horizontal, Vertical and Hybrid Subsurface Flow Constructed Wetland Systems in Polishing Municipal Wastewater

Koech

Otieno

Karuku

et al. 2017

EMSD

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“…The mean value of sucrase activities (mg glucose g −1 soil) in CWs incorporated with and without Fe–C‐ME were 0.19 and 0.13 mg glucose g −1 soil, respectively. As two important enzymes in CW, urease and sucrase could directly reflect TN and C decomposition removal capabilities (Yuan et al 2016b; Zhou et al 2017a). The result suggested that Fe–C‐ME had an effect on the urease and sucrase activities in CWs.…”

Section: Resultsmentioning

confidence: 99%

Investigating the influence of iron–carbon microelectrolysis on the performance and microbial community of constructed wetlands

Fang

Zhou

et al. 2019

Water & Environment J

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Iron-carbon microelectrolysis (Fe-C-ME) has been used extensively for the treatment of domestic sewage. In this study, CWs incorporated with Fe-C-ME were established, and the performance and microbial community structure of CWs were investigated. The results indicated that CWs incorporated with Fe-C-ME had better performance for treating domestic sewage. The NO 3-N, TN and TP removal efficiencies of CWs incorporated with Fe-C-ME were 82.3, 80.3 and 98.2%, respectively, which were 7.8, 4.7 and 25.2% higher than those of the CWs without Fe-C-ME. High-throughput sequencing analysis demonstrated that Fe-C-ME changed the microbial community structure. For example, some dominant groups at the class level, such as Betaproteobacteria (15.2%), Gammaproteobacteria (10.6%) and Deltaproteobacteria(10.0%), were promoted by Fe-C-ME. The results demonstrated that the relative abundance of bacteria involved in nitrification, denitrification, polyphosphate accumulation or COD reduction at the genus level thrived because of the presence of Fe-C-ME, which can improve the performance of CWs.

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“…The high percentage removal could be attributed to the degradation of the abattoir wastewater and an adequate nitrification process within the bamboo construction wetland system. The bamboo constructed wetland system probably activated the conversion of ammonium in the wastewater to nitrates by Nitrosomonas bacteria (Fan et al 2013;Yuan et al 2016) and was subsequently absorbed by the bamboo to further undergo the process of conversion to nitrogenous oxides by chemo autotrophic bacteria (Vymazal 2007;Saeed & Sun 2013).…”

Section: Figure 1 Retention Period For Phosphate Removalmentioning

confidence: 99%

Removal of pollutants from abattoir wastewater using a pilot-scale bamboo constructed wetland system

et al. 2020

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Wastewater from abattoir sources in urban areas can adversely affect the environment and cause health problems. This research investigated the ability of a bamboo constructed wetland system (BCWS) using Bambusa vulgaris, to treat wastewater from abattoir by removing nutrients and organics. This study adopted pilot scale reactors with bed dimension of 1 m length x 1 m width x 1 m depth to simulate a horizontal sub-surface flow constructed wetland and planted with six strands of bamboo plants. Parameters analyzed include the nutrients (in the form of phosphate and nitrate) and the organics (in the form of Chemical oxygen demand, COD and Biochemical oxygen demand, BOD). The effluent analysis that were carried out within a 28-day retention period showed that there was a very good decrease in the nutrient pollutant parameters; phosphate (99.6 %), nitrate (98.5 %). The organics showed a lesser performance with a 39.3 % removal efficiency for COD and 49.9 % removal efficiency for BOD. Bamboo can be used in a BCWS for low cost green technology in urban areas and can be improved upon by increasing the number of bamboo shoot in order to have a larger root system.

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Bacterial communities and enzymatic activities in the vegetation-activated sludge process (V-ASP) and related advantages by comparison with conventional constructed wetland

Cited by 16 publications

References 43 publications

Effectiveness of the Horizontal, Vertical and Hybrid Subsurface Flow Constructed Wetland Systems in Polishing Municipal Wastewater

Effectiveness of the Horizontal, Vertical and Hybrid Subsurface Flow Constructed Wetland Systems in Polishing Municipal Wastewater

Investigating the influence of iron–carbon microelectrolysis on the performance and microbial community of constructed wetlands

Removal of pollutants from abattoir wastewater using a pilot-scale bamboo constructed wetland system

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