A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Effect of Artificial Aeration, Temperature, and Structure on Nutrient Removal in Constructed Floating Islands
To study the optimal performance characteristics and maximize the removal efficiency of contaminants by the constructed floating islands (CFIs), four kinds of parallel pilot‐scale CFIs with different structures were set up outdoors to treat eutrophic water for approximately 6 months. The contribution of artificial aeration to nutrient removal on the basis of gas‐water ratios was investigated, and the influences of the structure and temperature were evaluated simultaneously. It was noted that the nutrient removal rate of the multi‐medium CFI was greater than those of others. In the four kinds of units, aeration could significantly increase the nutrient removal efficiency, and a gas‐water ratio of 10 was adequate for the relatively high removal of nutrients. Using the aforementioned gas‐water ratio of 10 and a hydraulic residence time (HRT) of 2 days, the mean removal efficiencies of the multi‐medium CFI for NH3‐N and total phosphorus were 71.7% and 63.6%, respectively—approximately twice as great as those in the non‐aerated system. Furthermore, temperature was an important factor for nutrient removal in the multi‐medium CFI. With the water temperature of >13 °C and the HRT of 2.5 days, the mean removal efficiencies for NH3‐N and total phosphorus were 87.6% and 83.5%, respectively, whereas the removal efficiency decreased significantly when the temperature was lower than 13°C.
Effect of Artificial Aeration, Temperature, and Structure on Nutrient Removal in Constructed Floating Islands
To study the optimal performance characteristics and maximize the removal efficiency of contaminants by the constructed floating islands (CFIs), four kinds of parallel pilot‐scale CFIs with different structures were set up outdoors to treat eutrophic water for approximately 6 months. The contribution of artificial aeration to nutrient removal on the basis of gas‐water ratios was investigated, and the influences of the structure and temperature were evaluated simultaneously. It was noted that the nutrient removal rate of the multi‐medium CFI was greater than those of others. In the four kinds of units, aeration could significantly increase the nutrient removal efficiency, and a gas‐water ratio of 10 was adequate for the relatively high removal of nutrients. Using the aforementioned gas‐water ratio of 10 and a hydraulic residence time (HRT) of 2 days, the mean removal efficiencies of the multi‐medium CFI for NH3‐N and total phosphorus were 71.7% and 63.6%, respectively—approximately twice as great as those in the non‐aerated system. Furthermore, temperature was an important factor for nutrient removal in the multi‐medium CFI. With the water temperature of >13 °C and the HRT of 2.5 days, the mean removal efficiencies for NH3‐N and total phosphorus were 87.6% and 83.5%, respectively, whereas the removal efficiency decreased significantly when the temperature was lower than 13°C.
Effect of Artificial Aeration, Temperature, and Structure on Nutrient Removal in Constructed Floating Islands
Dunqiu, Wang (author) / Shaoyuan, Bai (author) / Mingyu, Wang (author) / Qinglin, Xie (author) / Yinian, Zhu (author) / Hua, Zhang (author)
Water Environment Research ; 84 ; 405-410
2012-05-01
6 pages
Article (Journal)
Electronic Resource
English
Nutrient Removal in Wetlands During Intermittent Artificial Aeration
| British Library Online Contents | 2008
Effect of Aeration on Nutrient Removal Performance of Oxidation Ditch Systems
| British Library Online Contents | 2005
THE USE OF AERATION TO ENHANCE AMMONIA NITROGEN REMOVAL IN CONSTRUCTED WETLANDS
| British Library Online Contents | 2003
Seasonal Variation of Nutrient Removal in a Full-Scale Artificial Aerated Hybrid Constructed Wetland
| DOAJ | 2016