Research on Phosphorus Removal in Artificial Wetlands by Plants and Their Photosynthesis

Quan, Quan; Shen, Bin; Zhang, Qian; Ashraf, Muhammad Aqeel

doi:10.1590/1678-4324-2016160506

Cited by 22 publications

(12 citation statements)

References 11 publications

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“…0.05) results confirmed by Zhang et al (2007). The decrease of PO 3À 4 in the treated water for all units is caused by the uptake by gravel in the filter for the unplanted cell (Molle 2003;Sim 2003), and by the interaction of bacteria and plants (Quan et al 2016), but it is a very small amount (Lantzke et al 1998).…”

Section: Phosphorous Removalmentioning

confidence: 66%

Performance of Canna indica and Typha latifolia in mono and mixed culture for secondary wastewater treatment in constructed wetlands with vertical flows under arid conditions (Touggourt, Algeria)

Zorai

Benzahi

Labed

et al. 2022

Water Practice and Technology

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This work investigates three laboratory-scale vertical flow-constructed wetlands (VFCWs) for treating a secondary effluent of wastewater under arid conditions to investigate the efficiency of two plants Canna indica and Typha latifolia in mono and mixed culture. The VFCWs were operated under hydraulic load (0.057 m3/m2d) and 5 days retention time. The results indicated no significant differences (P > 0.05) between the mono and mixed cultures. The C. indica gives the best efficiency of pollutant removal as COD (71.34%), NO2− (69.34%), and PO43− (69.67%). The uptake of TSS (83.98%) was best in the case of mixed culture. The mean percentages of BOD5 were convergent for mono and mixed culture, and it exceeds 89.80% in mixed culture. The mean percentages in NH4+ (98.69%) in mixed culture, elimination of NO2−, and the increase in the concentration of NO3− in the treated effluent showed the presence of nitrification in the VFCWs units. The two plant species exhibit high efficiency in the elimination of pollution compared to the unplanted control, with a slight superiority in the mixed culture. Therefore, it can be concluded that the application of these plants can be effective in arid conditions.

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Section: Phosphorous Removalmentioning

confidence: 66%

Performance of Canna indica and Typha latifolia in mono and mixed culture for secondary wastewater treatment in constructed wetlands with vertical flows under arid conditions (Touggourt, Algeria)

Zorai

Benzahi

Labed

et al. 2022

Water Practice and Technology

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“…A study in Brazil showed that emergent plants removed about 3.95 mgP/m 2 pollutants daily, which is responsible for removal of about 30.6% pollutants by artificial wetlands, while removal of the rest 69.1% pollutants are done by other means like substrates and microorganisms. The results indicate that in artificial wetlands, nitrogen rather than other pollutants was removed by other means like substrates and microorganisms (12).…”

Section: Introductionmentioning

confidence: 93%

Nitrogen removal by floating constructed wetland: Decontamination of the Buriganga River

Islam¹,

Hossain

Mullick

et al. 2020

Environ Health Eng Manag

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Background: Buriganga is considered as one of the most important river in the country. But, its water quality has changed dramatically, which is responsible for creating unfavorable conditions for aquatic life. The main aim of this study was to investigate the removal capacity of pollutants mainly nitrogen present in the Buriganga river as the most polluted rivers in Bangladesh, by floating constructed wetland. Methods: This study was conducted under constant and variable shock loadings in two phases, namely 'Phase I' and 'Phase II' during 11 and 10 weeks, respectively, in which about 180 L of raw water was dosed into the tank containing a floating mat, and pollutant concentrations in the river water influent from the system were tested over a period of 21 weeks. Results: Floating treatment wetland (FTW) could sustain and remove about 31.25% and 19.23% of ammonia in the 9th and 10th weeks of Phase I, respectively, and 40.63% and 56.12% in the 17th and 18th weeks of Phase II, respectively. At first, ammonia was converted to ammonium, then, to nitrite, and finally, to nitrate. As the rhizosphere was denser and the biofilm was thicker in this study, so nitrogen removal efficiency during the application of shock loading in the 17th and 18th weeks of Phase II was considerable. The removal percentage of nitrite was 76.12 and 80%, respectively. In regular dosing of raw water in the 11th and 19th weeks in Phase I and Phase II, respectively, the total nitrate removal efficiencies from influent were 31.91 and 43.33%, respectively. Conclusion:As water resources are limited, so improvement of water quality of the polluted Buriganga river would act as an important source of reusable water.

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“…Sự hấp thu chất ô nhiễm của thực vật giữ vai trò quan trọng trong quá trình xử lí nước thải của hệ thống đất ngập nước, nhưng quá trình này xảy ra không đáng kể đối với chỉ tiêu phosphate. Điều này cũng được minh chứng qua cơ chế loại bỏ PO 3− 4 trong mô hình đất ngập nước kiến tạo chảy mặt chủ yếu qua con đường lắng đọng [18]. Le Diem Kieu et al [19] cũng đã chứng minh được PO 3− 4 chủ yếu được giữ lại qua lớp cơ chất hay trên nền đáy của mô hình ĐNNKT.…”

Section: A Diễn Biến Nồng độ Phosphateunclassified

“…Tuy nhiên, ở ngày thứ 12, khả năng loại bỏ phosphate trong các nghiệm thức không đổi hoặc giảm so với ngày thứ 9, điều này dẫn đến nồng độ phosphate trong nước thải không giảm theo xu hướng mà tăng trở lại, có nghĩa là quá trình loại bỏ phosphate trong nước thải chủ yếu thông qua quá trình hấp phụ và lắng đọng trên nền đáy. Theo Quan et al [18], việc hấp phụ là quá trình đảo nghịch, khi nồng độ phosphate trong nước thải thấp, một tỉ lệ nhỏ chất bị hấp phụ sẽ bị khuếch tán trở lại môi trường, do lực tương tác kém, dẫn đến giảm tốc độ loại bỏ chất ô nhiễm. Kết quả phân tích trong nghiên cứu phù hợp với các kết quả nghiên cứu được thực hiện trước đây [21], [22].…”

Section: A Diễn Biến Nồng độ Phosphateunclassified

KINETICS OF PHOSPHATE REMOVAL FROM DOMESTIC WASTEWATER BY CONSTRUCTED WETLAND WITH JOYWEED (Alternanthera sp.)

Tran

Nguyen

Nguyen³

et al. 2020

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This study aims to determine the dynamics of phosphate removal process in domestic wastewater through wastewater treatment mechanism of constructed wetland with Joyweed (Alternanthera sp.). The experiment was conducted in batches with a retention time of 12 days, the treatments were designed to evaluate the effect of depth of the water with and without Alternanthera sp. on the ability to remove phosphate in wastewater. After 12 days of operation, all experiments reduced phosphate concentration in the effluent. The highest phosphate removal efficiency is at day 9 (about 69\%). Two kinetic equations of first-order and second-order are used to determine the trend of PO43- removal process in the system. The second-order kinetic equation is more suitable for treating PO43- in domestic wastewater by surface flow constructed wetland system. The results of this study show the potential of domestic wastewater treatment of Alternanthera sp. in the constructed wetland.

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Research on Phosphorus Removal in Artificial Wetlands by Plants and Their Photosynthesis

Abstract: Urban rainfall runoff pollution has become a major reason for water eutrophication problem in the process of urbanization in China

Cited by 22 publications

References 11 publications

Performance of Canna indica and Typha latifolia in mono and mixed culture for secondary wastewater treatment in constructed wetlands with vertical flows under arid conditions (Touggourt, Algeria)

Performance of Canna indica and Typha latifolia in mono and mixed culture for secondary wastewater treatment in constructed wetlands with vertical flows under arid conditions (Touggourt, Algeria)

Nitrogen removal by floating constructed wetland: Decontamination of the Buriganga River

KINETICS OF PHOSPHATE REMOVAL FROM DOMESTIC WASTEWATER BY CONSTRUCTED WETLAND WITH JOYWEED (Alternanthera sp.)

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