Journal of Dalian Ocean University  2023, Vol. 38 Issue (5): 902- DOI: 10.16535/j.cnki.dlhyxb.2023-040 |
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| Research progress on the factors influencing mariculture wastewater treatment by constructed wetland:a review |
| ZHANG Cuiya，CHEN Feng，GUO Xianyong，LIU Jiaxuan，ZHANG Kun*
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College of Ocean and Civil Engineering，Dalian Ocean University，Dalian 116023，China
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Abstract The rapidly developing marculture industry generates a large amount of aquaculture tail water, which can threaten the ecological environment of local offshore waters. Constructed wetlands as typical wastewater treatment process are advantage features including low energy consumption, low investment, and resistance to impact loads, showing good application prospects in purifying seawater aquaculture tail water. This article reviews the effects of factors such as plants, substrates, denitrifying microorganisms, operating parameters, and salinity on the performance of constructed wetlands in purifying mariculture tail water. The problems in current research on purifying seawater aquaculture tail water by constructed wetlands are analyzed, focusing on future research, including selecting suitable substrates and salinity tolerant plants, optimizing hydraulic operating parameters, and the impact of complex environments on the ability of seawater constructed wetlands to purify mariculture tail water is discussed. The technologies that can enhance the purification capacity of constructed wetlands, and search for alternative high quality carbon sources are suggested, in order to provide reference for further research on the mechanism and application of constructed wetlands in purifying mariculture tail water.
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Published: 08 November 2023
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