Growing duckweed in swine wastewater for nutrient recovery and biomass production

2011 ◽  
Vol 102 (2) ◽  
pp. 848-853 ◽  
Author(s):  
Jiele Xu ◽  
Genxiang Shen
Keyword(s):  
Biomass Production ◽  
Swine Wastewater ◽  
Nutrient Recovery

scholarly journals NUTRIENT RECOVERY AND POLLUTANT REMOVAL FROM PIGGERY WASTEWATER BY SPIRULINA CULTIVATION

2020 ◽  
Vol 58 (3A) ◽  
pp. 187
Author(s):  
Yen Thi Thai Doan ◽  
Nga Thuy Nguyen ◽  
My Tra Phung ◽  
Chau Ngoc Nguyen ◽  
Huong Thi Do
Keyword(s):  
Growth Rate ◽  
Biomass Production ◽  
N:P Ratio ◽  
Pollutant Removal ◽  
Nutrient Recovery ◽  
High Concentration ◽  
Piggery Wastewater ◽  
N:P Ratios ◽  
The Cost ◽  
Protein Rich

Spirulina is noticed for great applications on food supplements, animal feeds, pharmaceutical, cosmetics, biofuel, fertilizer, etc. Spirulina cultures in wastewaters could enhance the feasibility of commodities due to its ability to reduce the cost of biomass production and remove pollutants in wastewaters. This study investigates the effects of wastewater pretreatment using various aeration periods (i.e. from 3 to 7 days), the supplement of bicarbonate and N:P ratios on the growth of Spirulina sp. HH to produce protein-rich biomass. The work showed that Spirulina sp. had the ability to effectively remove ammonium, with the highest efficiencies up to 99.9 %. However, the high concentration of ammonium in wastewater, from 125 mg N/L upward, caused a decline in the growth rate of Spirulina. The growth and remediation potential of Spirulina sp. were in the best condition with the N:P ratio of the medium in the range of 19:1-22:1. This study suggested a procedure to cultivate Spirulina sp. in piggery wastewater and remove pollutants efficiently.

Integrating a tidal flow wetland with sweet sorghum for the treatment of swine wastewater and biomass production

2017 ◽  
Vol 101 ◽  
pp. 145-154 ◽  
Author(s):  
Fen-Meng Zhu ◽  
Hong-Guang Zhu ◽  
Wen-Yan Shen ◽  
Ting-Hua Chen
Keyword(s):  
Biomass Production ◽  
Sweet Sorghum ◽  
Tidal Flow ◽  
Swine Wastewater

scholarly journals Short-Rotation Willows as a Wastewater Treatment Plant: Biomass Production and the Fate of Macronutrients and Metals

Forests ◽  
2021 ◽  
Vol 12 (5) ◽  
pp. 554
Author(s):  
Darja Istenič ◽  
Gregor Božič
Keyword(s):  
Wastewater Treatment ◽  
Biomass Production ◽  
Biomass Yield ◽  
Wastewater Treatment Plants ◽  
Phosphorus Uptake ◽  
Woody Biomass ◽  
Nutrient Recovery ◽  
Nitrogen And Phosphorus ◽  
Shoot Number ◽  
Nitrogen And Phosphorus Uptake

Evapotranspirative willow systems (EWS) are zero-discharge wastewater treatment plants that produce woody biomass and have no discharge to surface or groundwater bodies. The influence of wastewater on the growth of three clones of Salix alba (‘V 093’, ‘V 051’ and ‘V 160’) and the distribution of macronutrients and metals in a pilot EWS receiving primary treated municipal wastewater was studied under a sub-Mediterranean climate. The influent wastewater, shoot number, stem height, and biomass production at coppicing were monitored in two consecutive two-year rotations. Soil properties and the concentrations of macronutrients and metals in soil and woody biomass were analyzed after the first rotation. S. alba clones in EWS produced significantly more woody biomass compared to controls. ‘V 052’ produced the highest biomass yield in both rotations (38–59 t DM ha−1) and had the highest nitrogen and phosphorus uptake (48% and 45%) from wastewater. Nitrogen and phosphorus uptake into the harvestable woody biomass was significantly higher in all clones studied compared to other plant-based wastewater treatment plants, indicating the nutrient recovery potential of EWS. The indigenous white willow clone ‘V 160’ had the lowest biomass yield but absorbed more nutrients from wastewater compared to ‘V 093’. Wastewater composition and load were consistent with the nutrient requirements of the willows; however, an increase in salinity was observed after only two years of operation, which could affect EWS efficiency and nutrient recovery in the long term.

scholarly journals Plant Biomass Production in Constructed Wetlands Treating Swine Wastewater in Tropical Climates

Fermentation ◽  
2021 ◽  
Vol 7 (4) ◽  
pp. 296
Author(s):  
Mayerlin Sandoval-Herazo ◽  
Georgina Martínez-Reséndiz ◽  
Eduardo Fernández Echeverria ◽  
Gregorio Fernández-Lambert ◽  
Luis Carlos Sandoval Herazo
Keyword(s):  
Constructed Wetlands ◽  
Biomass Production ◽  
Constructed Wetland ◽  
Large Scale ◽  
Plant Biomass ◽  
Typha Latifolia ◽  
Pollutant Removal ◽  
Swine Wastewater ◽  
High Concentrations ◽  
Tropical Climates

The production of both aboveground and belowground plant biomass in constructed wetlands (CW) is a poorly understood topic, although vegetation plays an important role in the process of pollutant removal from wastewater. The objective of this study was to evaluate the aboveground and belowground biomass production of Typha latifolia and Canna hybrids in a large-scale constructed wetland treating swine wastewater in tropical climates. Parameters, such as temperature, DO, pH, COD, TSS, TN, TP, and TC, as well as destructive and non-destructive biomass, were evaluated. It was found that, despite the high concentrations of pollutants, the vegetation adapted easily and also grew healthily despite being exposed to high concentrations of pollutants from swine water. Although Typha latifolia (426 plants) produced fewer plants than Canna hybrids (582 plants), the higher biomass of the Typha latifolia species was slightly higher than that of Canna hybrids by 5%. On the other hand, the proximity of the water inlet to the system decreased the capacity for the development of a greater number of seedlings. As for the elimination of pollutants, after treatment in the constructed wetland, COD: 83.6 ± 16.9%; TSS: 82.2 ± 17.7%; TN: 94.4 ± 15.8%; TP: 82.4 ± 23.2%; and TC: 94.4 ± 4.4% were significantly reduced. These results show that wetlands constructed as tertiary systems for the treatment of swine wastewater produce a large amount of plant biomass that significantly helps to reduce the concentrations of pollutants present in this type of water in tropical areas. The use of these plants is recommended in future wetland designs to treat swine wastewater.

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