Method for purifying NOx-containing flue gas by using microalgae

The invention relates to a method for purifying NOx-containing flue gas by utilizing microalgae, which comprises the following steps: adding a microalgae culture medium into a photobioreactor, inoculating the microalgae, introducing CO2-containing gas, culturing for a period of time, inoculating aerobic denitrifying bacteria, culturing for a period of time, introducing NOx-containing flue gas, treating, and discharging purified gas. The NOx removal rate of the microalgae is not lower than 50%. According to the invention, the flue gas is purified by coupling the functional microalgae and the aerobic denitrifying bacteria, efficient removal of NOx in the flue gas is realized through the synergistic effect of the two microorganisms, and microalgae cells with high grease content are obtained. 本发明涉及一种利用微藻净化含NOx烟气的方法，是在光生物反应器中加入微藻培养基并接种微藻，通入含CO2气体培养一段时间，再接入好氧反硝化菌培养一段时间后，通入含NOx烟气进行处理，排出净化气；所述的微藻为NOx脱除率不低于50%的微藻。本发明利用功能性微藻和好氧反硝化菌耦合净化烟气，通过两种微生物的协同作用，实现了烟气中NOx的高效脱除，并获得了高油脂含量的微藻细胞。