循环海水养殖系统固相反硝化工艺研究进展OACSTPCD

Nitrogenous components in food residues,animal excrements and rotten organisms in a recirculating mariculture system(RMS)can be gradually transformed to nitrate(NO3‒)by chemical oxidation during water treatment and microbial nitrification and thus accumulating continuously with water recirculations,which seriously deteriorates the water quality and threatens the health of cultured animals.In recent years,solid-phase denitrification process has been increasingly applied to RMS due to its merits of a favorable nitrogen removal performance,without need of accurate carbon source addition and monitoring devices,and avoiding the secondary pollution and the difficult transportation/storage of a liquid carbon source.This paper presents a comprehensive review of different solid-phase denitrification processes and their denitrification efficiencies,environmental influencing factors,and microbial communities when applied to RMS,which provides useful references for the future research and application of this process.