Abstract: China is the largest of mariculture country in the world. The rapid development of this industry has brought about environmental pollution problems such as water pollutant discharge that cannot be ignored while booming the social economy. Mariculture wastewater is characterized by high salinity, complex pollutant composition and poor biochemical properties, and the treatment of mariculture wastewater is the difficult and technically demanding. Researches on the formation process and mechanism of mariculture carbon sink indicate that mariculture process and marine carbon sink are mutually reinforcing. This paper reviews the research progress of in situ bioremediation technologies including shellfish purification, microbial purification, biosymbiotic restoration, and comprehensive wastewater treatment, as well as ex situ bioremediation technologies such as ecological floating islands, ecological ditches, artificial wetlands, and ecological purification ponds. On this basis, the strategy of mariculture wastewater treatment and carbon reduction is proposed with the core of efficient deep treatment of wastewater and resource and energy recycling, taking into account the sustainable development goals of mariculture industry in China. The present paper looks forward to carbon neutrality in the future, innovating breeding models to increase marine carbon sinks, strengthening the management and control of green breeding processes, upgrading wastewater treatment technology and resource regeneration to reduce carbon emissions. The appropriate combination of carbon emission reduction is expected to provide a useful reference for promoting marine aquaculture to help achieve the strategic goal of carbon neutrality.
2022, Vol. 37 
