Yangtao Zhou 

Dalian Ocean University College of Mechanical and Power Engineering

Abstract：

This study developed a low-temperature ecological purification system based on microbial community succession and applied it to temporary oyster rearing water to improve purification efficiency under cold conditions. By establishing three different treatment groups, it compared the microbial succession process and pollutant removal performance of functional strain inoculation versus natural enrichment under low-temperature conditions, focusing on key pollutants such as ammonia nitrogen, COD, and total phosphorus. The results showed that the system inoculated with dominant bacterial strains rapidly formed a stable micro-ecological environment and significantly improved water quality. Community structure analysis indicated that functional bacteria with environmental adaptability under low temperatures gradually dominated the purification process, confirming the critical role of microbial succession in ecosystem stability and purification function. This research offers a green and efficient ecological purification strategy for oyster farming in cold marine areas, with promising application prospects.

Key Words：

temporary oyster rearing; low-temperature ecological purification; microbial community succession; water quality improvement; functional bacterial strains