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| Efficiency of mangrove wetlands in nitrogen and phosphorus removal from wastewater |
| Received:December 23, 2021 |
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| KeyWord:mangrove;constructed wetland;nitrogen;phosphorus;wastewater purification |
| Author Name | Affiliation | E-mail | | LIU Yong | Key Laboratory of South China Sea Fishery Resources Exploitation & Utilization, Ministry of Agriculture and Rural Affairs, Observation and Research Station of Pearl River Estuary Ecosystem of Guangdong Province, South China Sea Fisheries Research Institute, Chinese Academy of Fishery Science, Guangzhou 510300, China
Southern Marine Science and Engineering Guangdong Laboratory(Guangzhou), Guangzhou 511458, China | | | ZHANG Shihan | Key Laboratory of South China Sea Fishery Resources Exploitation & Utilization, Ministry of Agriculture and Rural Affairs, Observation and Research Station of Pearl River Estuary Ecosystem of Guangdong Province, South China Sea Fisheries Research Institute, Chinese Academy of Fishery Science, Guangzhou 510300, China
Shanghai Ocean University, Shanghai 201306, China | | | XIAO Yayuan | Key Laboratory of South China Sea Fishery Resources Exploitation & Utilization, Ministry of Agriculture and Rural Affairs, Observation and Research Station of Pearl River Estuary Ecosystem of Guangdong Province, South China Sea Fisheries Research Institute, Chinese Academy of Fishery Science, Guangzhou 510300, China
Southern Marine Science and Engineering Guangdong Laboratory(Guangzhou), Guangzhou 511458, China | | | WU Peng | Key Laboratory of South China Sea Fishery Resources Exploitation & Utilization, Ministry of Agriculture and Rural Affairs, Observation and Research Station of Pearl River Estuary Ecosystem of Guangdong Province, South China Sea Fisheries Research Institute, Chinese Academy of Fishery Science, Guangzhou 510300, China
Southern Marine Science and Engineering Guangdong Laboratory(Guangzhou), Guangzhou 511458, China | | | WANG Teng | Key Laboratory of South China Sea Fishery Resources Exploitation & Utilization, Ministry of Agriculture and Rural Affairs, Observation and Research Station of Pearl River Estuary Ecosystem of Guangdong Province, South China Sea Fisheries Research Institute, Chinese Academy of Fishery Science, Guangzhou 510300, China
Southern Marine Science and Engineering Guangdong Laboratory(Guangzhou), Guangzhou 511458, China | | | LI Chunhou | Key Laboratory of South China Sea Fishery Resources Exploitation & Utilization, Ministry of Agriculture and Rural Affairs, Observation and Research Station of Pearl River Estuary Ecosystem of Guangdong Province, South China Sea Fisheries Research Institute, Chinese Academy of Fishery Science, Guangzhou 510300, China
Southern Marine Science and Engineering Guangdong Laboratory(Guangzhou), Guangzhou 511458, China | chunhou@scsfri.ac.cn |
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| Abstract: |
| To assess the efficiency of mangrove wetlands in pollutant removal from mariculture pond wastewater, artificial wetland systems were constructed using seedlings of Kandelia candel, Aegiceras corniculatum, and Rhizophora stylosa. Artificial wastewater with different concentrations of nitrogen and phosphorus was loaded daily(5, 10, 15 times, and 25 times)in the constructed mangrove wetlands. The results showed that the removal rate of ammonia-nitrogen decreased with increasing nutrient concentration, and the removal efficiencies of K. candel were significantly higher than those of R. stylosa and A. corniculatum(P<0.05)under 15 times concentration treatment. All three mangrove seedlings showed a good removal efficiency of nitrite-nitrogen after a month of treatment with the constructed wetlands. However, the concentration of nitrate-nitrogen was relatively stable in the mangrove plant treatment system. Furthermore, phosphate concentrations decreased rapidly even after three days of treatment in the mangrove wetland systems. Overall, mangrove constructed wetlands, which exhibited a good removal efficiency of nitrogen and phosphorus from the wastewater of aquaculture ponds, can be widely applied in mariculture. |
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