Nitrogen and Phosphorus Removal from Simulated Wastewater with Aquatic Macrophytes

2012 ◽  
Vol 518-523 ◽  
pp. 2597-2603
Author(s):  
Na He ◽  
Zhan Xiang Sun ◽  
Yu Long Zhang ◽  
Ming Da Liu
Keyword(s):  
Aquatic Plants ◽  
Phosphorus Removal ◽  
Aquatic Macrophytes ◽  
Nitrogen And Phosphorus ◽  
Nitrogen And Phosphorus Removal ◽  
Emergent Plants ◽  
N Removal ◽  
Significant Difference ◽  
Simulated Wastewater ◽  
Floating Plants

This study focused on the comparisons between nitrogen and phosphorus removal rates from the simulated wastewater using various kinds of aquatic plants (4 emergent and 3 floating plants). Results showed that aquatic plants has a significant effect on the removal of NO3--N and TP, but has a less effect on NH4+-N. Among the four emergent plants, the order of NO3--N removal capacities was: S. sagittifolia > S. tabernaemontani > T. latifolia > A. calamus. But for TP, the order was: T. latifolia > A. calamus > S. tabernaemontani > S. sagittifolia. To the floating plants, the order of NO3--N and TP removal capacities were: E. crassipes > P. stratiotes. The ANOVA analyses showed that there was a significant difference between planted treatments and unplanted treatment for the removal of NO3--N and TP. The study suggests that the treatment of simulated wastewater using the aquatic macrophytes was effective in the removal of nutrients.

The Nitrogen and Phosphorus Removal and Sludge Yield Comparative Study under Anaerobic/Aerobic and Anaerobic/Anoxic Conditions

2012 ◽  
Vol 610-613 ◽  
pp. 2068-2073
Author(s):  
Ya Jing Li ◽  
Li Ping Sun ◽  
Min Ji
Keyword(s):  
Phosphorus Removal ◽  
Aerobic Condition ◽  
Anoxic Condition ◽  
Batch Reactors ◽  
Sequencing Batch Reactors ◽  
Nitrogen And Phosphorus ◽  
Nitrogen And Phosphorus Removal ◽  
Anoxic Conditions ◽  
Significant Difference ◽  
Aerobic And Anaerobic

The nitrogen and phosphorus removal efficiency and effect of different electron acceptors (O2 and NO3-) on the sludge yield were studied through experiments in two SBRs (Sequencing Batch Reactors ) in this paper. The results showed that two systems both had good decontamination effect; the theory value of sludge yield (It was 0.435gVSS/gCOD and 0.402gVSS/gCOD for anaerobic /aerobic and anaerobic/anoxic condition, respectively) was higher than the actual value (It was 0.335gVSS/gCOD and 0.321g VSS/gCOD for anaerobic/aerobic and anaerobic/anoxic condition, respectively); There was no significant difference for the sludge yield under anaerobic/aerobic and anaerobic/anoxic conditions, because the endogenesis respiration of sludge under anaerobic/aerobic condition was stronger consequently more sludge being attenuated (Attenuation coefficient was 0.0081 and 0.0026 for anaerobic/aerobic and anaerobic/anoxic condition, respectively).

Employing of Aquatic Plants for Urban Landscape Water Purification in Kaifeng

2012 ◽  
Vol 178-181 ◽  
pp. 367-370
Author(s):  
Li Min Zhao ◽  
Hai Tao Wan
Keyword(s):  
Aquatic Plants ◽  
Phosphorus Removal ◽  
Aquatic Vegetation ◽  
Urban Landscape ◽  
Nitrogen And Phosphorus ◽  
Nitrogen And Phosphorus Removal ◽  
Landscape Plants ◽  
As Species ◽  
Landscape Water ◽  
Urban Landscape Water

The bioremediation technology for urban landscape waters are illustrated in this paper. The characteristics and purification performance of urban landscape waters were introduced. Based on their good effects on nitrogen and phosphorus removal, the landscape plants are recommended as species of aquatic vegetation in phytoremediation of wastewater of urban river.

scholarly journals Nutrient removal by Rotala rotundifolia: a superior candidate for ecosystem remediation at low temperatures

RSC Advances ◽  
2020 ◽  
Vol 10 (49) ◽  
pp. 29139-29146
Author(s):  
Yunlong Yang ◽  
Xiaying Zhang ◽  
Jibo Xiao ◽  
Shuyi Chu ◽  
Zhida Huang
Keyword(s):  
Nutrient Removal ◽  
Low Temperatures ◽  
Phosphorus Removal ◽  
Aquatic Macrophytes ◽  
Nitrogen And Phosphorus ◽  
Nitrogen And Phosphorus Removal

Temperature is an extremely important factor affecting the nutrient (mainly nitrogen and phosphorus) removal of aquatic macrophytes.

Nitrogen and Phosphorus Removal Performance and Characteristics of a Sequencing Batch Moving Bed Biofilm Reactor

2011 ◽  
Vol 71-78 ◽  
pp. 2844-2847
Author(s):  
Hai Yan Guo ◽  
Teng Teng Feng ◽  
Zhi Gang Liu ◽  
Zhen Guo
Keyword(s):  
Phosphorus Removal ◽  
Operating Mode ◽  
Biofilm Reactor ◽  
Moving Bed Biofilm Reactor ◽  
Nitrogen And Phosphorus ◽  
Nitrogen And Phosphorus Removal ◽  
Moving Bed ◽  
N Removal ◽  
Removal Processes ◽  
P Removal

Laboratory scale experiments were conducted to study the performance and characteristics of nitrogen (N) and phosphorus (P) removal of a sequencing batch moving bed biofilm reactor (SBMBBR) with simple anaerobic/aerobic operating mode. Experimental results indicated that, under the operating condition of influent N concentration of 114 mg/L and P concentration of 12 mg/L, N and P removal efficiency reached 95% and 94% respectively under the conditions of influent COD/N (C/N) ratio of 2.8 to 4.0. Track studies of N, P and other operating parameters demonstrated that N removal was accomplished by anoxic denitrification during the filling and mixing stage and simultaneous nitrification and denitrification (SND) process in aerobic stage, while removal of P was realized through conventional phosphorus removal and denitrifying phosphorus removal processes.

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