环境因素对微藻去除氮磷的影响

Influence of environmental factors on removal of nitrogen and phosphorus by microalgae

微藻能够有效去除废水中的氮磷等营养物质,但是其对氮磷的实际去除能力受到各种因素的影响,本文综述了废水中氮磷的浓度、温度、藻密度、光照和pH值等诸多环境因素对微藻去除氮磷的影响。在不影响微藻正常生长的前提下,氮磷浓度、废水温度和藻密度越高,光照强度越强,且废水的pH值接近中性时,微藻对氮磷的去除速率和最终去除量也会越高。

Microalgae has a good effect on removal of nutrient such as nitrogen and phosphorus from wastewater. However, the removal ability of microalgae is influenced by several environmental factors, such as concentration of nitrogen and phosphorus, temperature, density of microalgae, intensity and cycles of illumination, pH and so on. Under the preconditions that the algal growth is natural, the rate and ultimate quantity of nitrogen and phosphorus removal will be increased with the raise of concentration of nitrogen and phosphorus, density of micro,alage, intensity and cycles of illumination, and neutral pH.