Nutrient removal of a floating plant system receiving low- pollution wastewater: Effects of plant species and influent concentration

Duan, Jinghao; Zhao, Jiayi; Xue, Lihong; Yang, Linzhang

doi:10.1088/1755-1315/41/1/012028

Cited by 5 publications

(3 citation statements)

References 11 publications

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“…Besides, the results found that the floating bed system with ryegrass had better removal effects on COD, TN and TP of wastewater than other groups at day 60, and the removal rate of them in different concentrations of wastewater were 53.0~70.2%, 56.2~83.3% and 50.0~61.1%. Similarly, previous research found that H. vulgaris showed the best performance for nitrogen treatment among four plants, and the average removal rates of TN were 70.7% and 87.7% under high and low influent concentration [28]. These indicated that the purification efficiency of plant floating bed system would depend on the plant species and wastewater concentration [23].…”

Section: The Pollutants Removal By Plant Floatingsupporting

confidence: 57%

Purifying Eutrophic Wastewater from Geese Farm with Plant Floating Bed in Winter

Huang¹,

Liu²,

Xue³

et al. 2021

Pol. J. Environ. Stud.

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The goal of this study was to compare the effects of three plants (ryegrass, chicory and cress) in floating bed systems on purification of sedimentation pond wastewater (low-concentration) and biogas slurry (high-concentration) from geese farm in winter. The results showed that the floating bed with ryegrass had better removal rates on chemical oxygen demand (COD), total nitrogen (TN) and total phosphorus (TP) of low-concentration wastewater than other groups at 60 days (P<0.05), and the removal rates were 53.0%, 83.3% and 61.1% respectively. At 90 days, cress has the best performance on removing 5-day biochemical oxygen demand (BOD 5) and turbidity (P<0.05), with a removal rate of 82.9% and 80.8%. The removal rates of BOD 5 , COD, TN and turbidity by ryegrass in highconcentration wastewater were significantly higher than other treatments (P<0.05), which were 84.0%, 70.2%, 56.2% and 82.1% respectively. However, ryegrass had better stem height, root length and plant biomass production compared with cress and chicory. In conclusion, ryegrass was an optimal floating plant for purification of geese wastewater in winter and the optimal treatment time was 60 days. The regress has strong adaption for fluctuate concentrations of pollutants and is suitable for treatment of livestock and poultry wastewater in practice.

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Section: The Pollutants Removal By Plant Floatingsupporting

confidence: 57%

Purifying Eutrophic Wastewater from Geese Farm with Plant Floating Bed in Winter

Huang¹,

Liu²,

Xue³

et al. 2021

Pol. J. Environ. Stud.

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“…In this experiment, the removal effect of water spinach floating bed in high-concentration wastewater was better than that in low-concentration wastewater, possibly because the more nutrients in the high concentration wastewater were absorbed by plants [27,28]. In addition, there is a problem that the plants in a long-term over-nutrition environment will lead to water loss and even death, which indicates that it is not necessarily proportional between decontamination effect and plant growth.…”

Section: The Nutrients Removal By Water Spinachmentioning

confidence: 77%

“…The average weight gain and growth rate of water spinach in low concentration were 1.95 and 8.05 times and 1.40 and 7.74 times of those in medium and high concentration group. As a crucial factor, the concentration of wastewater played an important role in plant growth [28], and low concentration wastewater was more suitable for plant growth in floating boat system. The water spinach with 40% coverage grew best in low concentration wastewater, and water spinach with 60% and 80% coverage was better in medium concentration wastewater.…”

Section: Effects On the Growth And Security Of Water Spinachmentioning

confidence: 99%

The Optimal Planting Coverage Rate and Wastewater Concentration for Water Spinach Floating Bed on Geese Wastewater Purification

Wang¹,

Chen²,

Liu³

et al. 2021

Pol. J. Environ. Stud.

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The goal of this study was to explore the optimal planting coverage rate and wastewater concentration required by water spinach floating bed system for the purification of geese farm wastewater. The results showed that the floating bed with water spinach in high concentration wastewater had better removal rates on ammonia nitrogen (NH 4 + -N), total nitrogen (TN) and total phosphorus (TP) (P<0.05). There was no significant difference on the removal of nutrients except turbidity (NTU) among the different plant coverage rages (P>0.05). The floating bed system with water spinach removed heavy metals (Hg, As and Zn) in different concentration wastewater, with removal rates of 22.21%~68.20%, 40.00%~52.94% and 100.00%. Water spinach in low concentration wastewater had significant higher root length, stem height and weight gain (P<0.05) than medium and high concentration wastewater. The TN and TP contents of water spinach stem leaf in high concentration wastewater were significantly higher than other groups(P<0.05). The concentration of heavy metals (Pb, Cd, As and Hg) in water spinach in all groups was far below the national food safety standard. In general, the water spinach floating bed is suitable for the purification of medium and low concentration wastewater, and the optimal coverage rate is 40%~60%.

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Sustainable Green Approaches for Wastewater Purification

Kumari,

Dhasmana,

Kishore

et al. 2023

Advanced and Innovative Approaches of Environmental Biotechnology in Industrial Wastewater Treatment

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Nutrient removal of a floating plant system receiving low- pollution wastewater: Effects of plant species and influent concentration

Cited by 5 publications

References 11 publications

Purifying Eutrophic Wastewater from Geese Farm with Plant Floating Bed in Winter

Purifying Eutrophic Wastewater from Geese Farm with Plant Floating Bed in Winter

The Optimal Planting Coverage Rate and Wastewater Concentration for Water Spinach Floating Bed on Geese Wastewater Purification

Sustainable Green Approaches for Wastewater Purification

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