Study on the growth of Spirulina in the wastewater from culture of shrimp
钝顶螺旋藻在养虾废水中的生长研究

The growth of Spirulina platensis in wastewater from the culture of shrimp was studied in the present paper. The results showed that S. platensis could not grow in the wastewater. After adding 5% Zarrouk culture to the wastewater, S. platensis could have good growth. By orthogonal experiments, the optimal cultivating condition for S. platensis in the wastewater with 5% adding culture was obtained: pH=8, initial density OD560=0.3, light intensity =2500lx. The study also showed that the microalgae could well utilize nitrogen and phosphorus in the wastewater and had good removal of the two elements. Spirulina platensis could remove 64.5% of ammoniac nitrogen, 41.9% of nitrate nitrogen, 67.1% of nitrite nitrogen, and 43.9% of active phosphorus.