Dissipation of Eutrophic Substances in Grass Carp Aquaculture Pond Water by Ozone
Suspended solids (SS) have become the main cause of water quality deterioration in aquaculture ponds. The application of ozone to aquaculture water bodies can improve the water quality and facilitate the removal of suspended solids. We used different concentrations of ozone to oxidize aquaculture wa...
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| Format: | Article |
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MDPI AG
2023-09-01
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| Series: | Water |
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| Online Access: | https://www.mdpi.com/2073-4441/15/18/3167 |
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| author | Zhe Chen Xingguo Liu Xiangyu Cheng Zeyu Guo |
| author_facet | Zhe Chen Xingguo Liu Xiangyu Cheng Zeyu Guo |
| author_sort | Zhe Chen |
| collection | DOAJ |
| description | Suspended solids (SS) have become the main cause of water quality deterioration in aquaculture ponds. The application of ozone to aquaculture water bodies can improve the water quality and facilitate the removal of suspended solids. We used different concentrations of ozone to oxidize aquaculture water and then determined the resulting concentration of suspended solids and their particle size distribution, as well as CODMn, UV254, algal density, and nitrogen content. The results showed the following: (i) The decrease in SS was the highest, amounting to 10.47%, after the addition of 2 mg/L of ozone and the completion of the oxidation reaction. Ozone caused the fragmentation of large SS particles and the flocculation of small particles, and these effects became more pronounced as the ozone concentration increased; (ii) After the introduction of ozone, the humus macromolecules naturally present in the water were oxidized, which improved the biochemical degradation of the water pollutants; (iii) Ozone oxidation caused the degradation of algae, resulting in a decrease in phytoplankton biomass and in the eutrophication of the water body; (iv) As the ozone concentration increased, the level of nitrous nitrogen decreased, while the concentrations of nitrate nitrogen and ammonia nitrogen were unchanged. The highest increase in total nitrogen was measured when 0.5 mg/L of ozone was applied. This study provides a theoretical basis for the application of ozone to eliminate eutrophic substances in freshwater ponds. |
| first_indexed | 2024-03-10T21:51:30Z |
| format | Article |
| id | doaj.art-6ea16b6335d04cc9acf1c585c16da0e8 |
| institution | Directory Open Access Journal |
| issn | 2073-4441 |
| language | English |
| last_indexed | 2024-03-10T21:51:30Z |
| publishDate | 2023-09-01 |
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| record_format | Article |
| series | Water |
| spelling | doaj.art-6ea16b6335d04cc9acf1c585c16da0e82023-11-19T13:24:46ZengMDPI AGWater2073-44412023-09-011518316710.3390/w15183167Dissipation of Eutrophic Substances in Grass Carp Aquaculture Pond Water by OzoneZhe Chen0Xingguo Liu1Xiangyu Cheng2Zeyu Guo3College of Fisheries and Life Science, Shanghai Ocean University, Shanghai 201306, ChinaFishery Machinery and Instrument Research Institute, Chinese Academy of Fishery Sciences, Shanghai 200092, ChinaCollege of Fisheries and Life Science, Shanghai Ocean University, Shanghai 201306, ChinaCollege of Fisheries and Life Science, Shanghai Ocean University, Shanghai 201306, ChinaSuspended solids (SS) have become the main cause of water quality deterioration in aquaculture ponds. The application of ozone to aquaculture water bodies can improve the water quality and facilitate the removal of suspended solids. We used different concentrations of ozone to oxidize aquaculture water and then determined the resulting concentration of suspended solids and their particle size distribution, as well as CODMn, UV254, algal density, and nitrogen content. The results showed the following: (i) The decrease in SS was the highest, amounting to 10.47%, after the addition of 2 mg/L of ozone and the completion of the oxidation reaction. Ozone caused the fragmentation of large SS particles and the flocculation of small particles, and these effects became more pronounced as the ozone concentration increased; (ii) After the introduction of ozone, the humus macromolecules naturally present in the water were oxidized, which improved the biochemical degradation of the water pollutants; (iii) Ozone oxidation caused the degradation of algae, resulting in a decrease in phytoplankton biomass and in the eutrophication of the water body; (iv) As the ozone concentration increased, the level of nitrous nitrogen decreased, while the concentrations of nitrate nitrogen and ammonia nitrogen were unchanged. The highest increase in total nitrogen was measured when 0.5 mg/L of ozone was applied. This study provides a theoretical basis for the application of ozone to eliminate eutrophic substances in freshwater ponds.https://www.mdpi.com/2073-4441/15/18/3167ozone oxidationsuspended solidseutrophicationgrass carp pond |
| spellingShingle | Zhe Chen Xingguo Liu Xiangyu Cheng Zeyu Guo Dissipation of Eutrophic Substances in Grass Carp Aquaculture Pond Water by Ozone Water ozone oxidation suspended solids eutrophication grass carp pond |
| title | Dissipation of Eutrophic Substances in Grass Carp Aquaculture Pond Water by Ozone |
| title_full | Dissipation of Eutrophic Substances in Grass Carp Aquaculture Pond Water by Ozone |
| title_fullStr | Dissipation of Eutrophic Substances in Grass Carp Aquaculture Pond Water by Ozone |
| title_full_unstemmed | Dissipation of Eutrophic Substances in Grass Carp Aquaculture Pond Water by Ozone |
| title_short | Dissipation of Eutrophic Substances in Grass Carp Aquaculture Pond Water by Ozone |
| title_sort | dissipation of eutrophic substances in grass carp aquaculture pond water by ozone |
| topic | ozone oxidation suspended solids eutrophication grass carp pond |
| url | https://www.mdpi.com/2073-4441/15/18/3167 |
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