中华绒螯蟹温室育苗的水处理

STUDY ON TECHNIQUE OF WATER PURIFICATION FOR ERIOCHEIR SINENSIS'S ARTIFICIAL BREEDING IN GREENHOUSE

通过对生物净化系统处理前后育苗水质指标变化情况的测定 ,初步探讨了生物净化系统在河蟹育苗过程中对水质的处理效果和应用价值。与传统的育苗工艺相比 ,应用生物净化系统有机物降解速度快 ,脱氮效果显著。COD、总氨氮的平均去除率分别为 33.2 %,55.5%。整个育苗过程pH稳定 ,溶氧丰富 ,池底无氧债和黑臭。

The experiments were conducted to research biofilter's purifying ability.Several water quality indexes were tested in Eriocheir sinenisis's larvae rearing pond to know the treatment effect.Compared with other treatment methods in traditional breeding,biofilter is more efficient in water purification.The removal rate of COD was 55.5%,the removal rate of ammonia N was 33.2%.During the breeding process,pH was stable and DO was abundant. There were no DO debt and stink in rearing pond.