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| Accounting methods and comparative analysis of pollution load from an aquaculture pond |
| Received:April 10, 2019 |
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| KeyWord:pond culture;pollution load accounting;adaptability evaluation;improved chemical analysis method |
| Author Name | Affiliation | E-mail | | LI Li-fen | College of Water Science, Beijing Normal University, Beijing 100875, China
Beijing Key Labor of Urban Hydrological Cycle and Sponge City Technology, Beijing 100875, China | | | XU Yun-qiang | College of Water Science, Beijing Normal University, Beijing 100875, China
Beijing Key Labor of Urban Hydrological Cycle and Sponge City Technology, Beijing 100875, China | | | SU Bao-lin | College of Water Science, Beijing Normal University, Beijing 100875, China
Beijing Key Labor of Urban Hydrological Cycle and Sponge City Technology, Beijing 100875, China | subl@bnu.edu.cn | | QIAO Fei | Chinese Research Academy of Environmental Science, Beijing 100012, China | qiaofei@craes.org.cn | | LEI Kun | Chinese Research Academy of Environmental Science, Beijing 100012, China | | | HE Jing-yi | College of Water Science, Beijing Normal University, Beijing 100875, China
Beijing Key Labor of Urban Hydrological Cycle and Sponge City Technology, Beijing 100875, China | |
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| Abstract: |
| A scientific, accurate, and quantitative analysis of water management and pollution load is very important for pollution control and load reduction of pond aquaculture. In this study, existing pollution load accounting methods were investigated,adaptability evaluation and pollution load calculations were conducted, and the chemical analysis methods was improved. The results showed the following increasing order of pollution loads calculated by different methods:pollution load rate method > Takeochi method > Mass balance method > pollutant discharge coefficient method > chemical analysis method. The pollution loads calculated by the three methods based on the mass conservation theory were much higher than that by the chemical analysis method and discharge coefficient method. This indicates that fish feed residual sediment contributes more pollutant load to the external environment of the pond. The calculation of loads by the improved chemical analysis method showed that fish feed was the main source of the pollution load in the pond, and the proportions of TN and TP in the sediment were about 60% and 85% of the total pollution load, respectively. Our results indicated that pond water and sediment management have a large impact on pollution load accounting results, and that improved chemical analysis can quantitatively reflect the impact of total aquaculture production, water, and sediment discharge on the external environment. |
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