Phosphorus and nitrogen removal from tertiary treated urban wastewaters by a vertical flow constructed wetland

Martín, Miguel; Gargallo, S.; Hernández-Crespo, Carmen; Oliver, Núria

doi:10.1016/j.ecoleng.2013.09.046

Cited by 50 publications

(24 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The SW, characterized by high content of nitrate and low concentration of organic matter, was simulated based on the effluent of a membrane bioreactor in our previous study [24]. Actually, its properties were similar to the treated wastewater in other references [25,26]. Similar levels of total phosphorus (TP) and total nitrogen (TN) were contained in the two types of wastewater.…”

Section: Operation Conditions Of the Ivcwsmentioning

confidence: 99%

See 1 more Smart Citation

Comparative evaluation of total phosphorus removal performances for treatment of domestic and secondary wastewater using integrated vertical-flow constructed wetlands: two years’ experience

Chang

Zhang

et al. 2015

Desalination and Water Treatment

View full text Add to dashboard Cite

A B S T R A C TFour small-scale gravel-based integrated vertical-flow constructed wetlands (IVCWs) were established to treat domestic and secondary wastewater (SW) in parallel under two loading rates (LRs) for an operational period of about two years and the total phosphorus (TP) removal performances were investigated and compared. Highly effective TP elimination sustained for about 10 d, with remarkable declines followed to relatively stable efficiencies for both types of wastewater. Significant difference of TP removal performance for the two types of wastewater was observed. In period 1, under high LR, the IVCWs performed better when treating domestic wastewater (DW), achieving average removal efficiency and rate of 51.6% and 0.389 g m, respectively, compared to those of 30.1% and 0.233 g mfor SW. However, in the operational period 2 fed with a low LR, better TP removal performance was achieved for SW, with reduction efficiency and rate of 41.5% and 0.057 g m −2 d −1 on average, while the corresponding value for the treatment of DW was just 12.5% and 0.023 g m. Significant correlations between TP removal efficiency and plant growth detected during this period and better developed vegetation in systems fed with SW might suggest the considerable role of plant growth, which could be influenced by inlet properties, on P retention and lifespan extending of constructed wetland. Gravel-based IVCW could be employed to remove low load of phosphorus and wastewater properties, and plant growth cycle should be taken into consideration in future IVCW design and application.

show abstract

Section: Operation Conditions Of the Ivcwsmentioning

confidence: 99%

“…The significant roles of plants and micro-organisms in sediment on P removal performance and life expectancy of CW had been verified by some researches [26,45]. Vegetation could influence sediment microbial biomass and communities, and then impact P retention performance of wetland.…”

Section: The Role Of Vegetation Development On Tp Removal Performancementioning

confidence: 99%

Comparative evaluation of total phosphorus removal performances for treatment of domestic and secondary wastewater using integrated vertical-flow constructed wetlands: two years’ experience

Chang

Zhang

et al. 2015

Desalination and Water Treatment

View full text Add to dashboard Cite

show abstract

“…This system possesses complex physical, chemical, and biological processes similar to natural wetlands and is widely used to treat different types of wastewater [3][4][5]. CWs performances are frequently reported to be satisfactory (over 80%) for suspended solids (SS) and organic matter [6]; however, for nutrient removal, high variations in removal rates are often observed.…”

Section: Introductionmentioning

confidence: 99%

“…Filter media with high phosphorus binding capacity is a suitable strategy to maximize phosphorus removal [2,11] in CWs. Even though a wide range of substrates have already been tested for phosphorus removal [2,4], further investigations are still necessary to obtain sustainable, cost-effective, and locally available media for CWs [2,4,12]. Microbial nitrification is usually considered as the rate limiting step of nitrogen removal in CWs [5,13].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Seasonal Variation of Nutrient Removal in a Full-Scale Artificial Aerated Hybrid Constructed Wetland

Zhai

Xiao

Rahaman

et al. 2016

Water

View full text Add to dashboard Cite

Abstract:To improve nutrient removal, a full-scale hybrid constructed wetland (CW) consisting of pre-treatment units, vertical-baffled flow wetlands (VBFWs), and horizontal subsurface flow wetlands (HSFWs) was installed in August 2014 to treat sewage wastewater. Artificial aeration (AA) was applied continuously in the VBFW stage to improve the aerobic condition in the hybrid CW. Water samples were collected and analyzed twice a month between the period of August 2015 and July 2016. The results suggest that this new hybrid CW can achieve a satisfactory reduction of chemical oxygen demand (COD), ammonium nitrogen (NH 4 + -N), total nitrogen (TN), and total phosphorus (TP) with average removal rates of 85% ± 10% (35% ± 19 g/m 2 per day), 76% ± 18% (7% ± 2 g/m 2 per day), 65% ± 13% (8% ± 2 g/m 2 per day), and 65% ± 21% (1 g/m 2 per day), respectively. AA significantly improved the aerobic condition throughout the experimental period, and the positive influence of AA on nitrogen removal was found to be higher during summer that during winter. A significant positive correlation between water temperature and nutrient removal (p < 0.01) was observed in the system. Overall, this study demonstrates the application of AA in a full-scale hybrid CW with satisfactory nutrient removal rates. The hybrid CW system with artificial aeration can serve as a reference for future applications areas where land availability is limited.

show abstract

Land cover impacts on storm flow suspended solid and nutrient concentrations in southwest Ohio streams

Lazar

Spahr

Grudzinski

et al. 2019

Water Environment Research

View full text Add to dashboard Cite

Impacts between urban and agricultural land cover on storm flow water quality are poorly understood for the Eastern Corn Belt Ecoregion in SW Ohio. Storm flow water samples were collected from May 2017 to October 2017 across seven SW Ohio watersheds which ranged in urban land cover from 6% to 92% and in agricultural land cover from 4% to 70%. Two watersheds contained water resource recovery facilities (WRRFs). Percent agricultural land cover in a watershed and storm magnitude were primary explanatory variables for total suspended solid and total phosphorus concentrations. Total nitrogen, nitrate, and phosphate concentrations were primarily explained by the presence of WRRFs and percent agricultural land cover. Increased dissolved nutrient concentrations in watersheds with WRRFs indicate that WRRFs in the study area are ineffectively removing nitrate and phosphate from effluent. Results suggest that to improve water quality during storm flows, additional management efforts need to be focused on agricultural watersheds and WRRFs. • Practitioner points• Storm flow water quality in the study area is significantly affected by land cover, WRRF Q, and storm Q. • TSS and TP concentrations are best explained by percent of agricultural land cover in a watershed and magnitude of storms. • TN, NO 3 -N, and PO 3 4 -P concentrations are best explained by WRRF Q, followed by the percent agricultural land cover. • This study shows that agricultural land cover and WRRFs play a significant role in water quality degradation in SW Ohio.

show abstract

Phosphorus and nitrogen removal from tertiary treated urban wastewaters by a vertical flow constructed wetland

Cited by 50 publications

References 22 publications

Comparative evaluation of total phosphorus removal performances for treatment of domestic and secondary wastewater using integrated vertical-flow constructed wetlands: two years’ experience

Comparative evaluation of total phosphorus removal performances for treatment of domestic and secondary wastewater using integrated vertical-flow constructed wetlands: two years’ experience

Seasonal Variation of Nutrient Removal in a Full-Scale Artificial Aerated Hybrid Constructed Wetland

Land cover impacts on storm flow suspended solid and nutrient concentrations in southwest Ohio streams

Contact Info

Product

Resources

About