氨氮是水体中重要的污染源，大量含氮废水排入受纳水体，造成水体的富营养化，同时影响水的应用价值，藻类植物为自养植物，在阳光下，可以利用水中的氮，磷等简单物质合成光合产物，去除水体中的氮类。本文用海藻酸钠包埋藻细胞对含氮废水进行处理，结果证明经２４小时的处理后，ＮＨ３－Ｎ浓度可降低４５．０－８５％，系统可连续运行３０天，并且小球藻的净化效果要好于绿色独球藻。 Ammonia nitrogen is an important source of pollution in water. A large amount of nitrogenous wastewater is discharged into the receiving water body, resulting in the eutrophication of water bodies and affecting the application value of water. Algae plants are autotrophic plants. Under sunlight, nitrogen and phosphorus Simple substances such as photosynthetic products, the removal of nitrogen in water. In this paper, alginate-embedded algae cells treated with nitrogen-containing wastewater, the results show that after 24 hours of treatment, the concentration of NH3-N can be reduced by 45.0-85%, the system can run continuously for 30 days, and the chlorella Purification better than green algae.