Research Progress on Mechanism of Bacterial-Algal System for Wastewater Treatment and CO2 Fixation
Currently,the water ecosystem is seriously polluted,and the existing water treatment process has problems of high energy consumption and greenhouse gas emissions.Bacterial-algal system is a green treatment technology that can treat wastewater and fix CO2 simultaneously.The effectiveness and mechanism of the bacteria-algae system to improve the efficiency of pollution reduction and carbon fixation are reviewed.And the mechanism of the bacteria-algae system to degrade nitrogen and phosphorus and fix CO2 is elaborated,microalgae absorbed nitrogen and phosphorus through assimilation,and fixed CO2 through photosynthetic autotrophic,heterotrophic and parthenogenic processes.Bacteria removes nitrogen through nitrification and denitrification,and uses phosphorus-polymerizing bacteria to strengthen phosphorus removal.The carbon fixation efficiency of algal is improved by promoting the production of carbonic anhydrase.The existing problems in the practical application of the bacterial-algal system are summarized,and the future research directions are prospected,which provide theoretical support for the further application of bacterial-algal system.
bacterial-algal systemwastewater treatmentCO2 fixationmechanismpollution and carbon emission reduction
万方数据
