Method for evaluating feasibility of chemical precipitation-CO2 mineralization coupled removal of biogas slurry pollutants

The invention provides a feasibility assessment method for removing biogas slurry pollutants through chemical precipitation-CO2 mineralization coupling, and relates to the field of effective utilization of renewable resources. The feasibility evaluation method for removing the biogas slurry pollutants through chemical precipitation-CO2 mineralization coupling comprises design of a technical route for removing the biogas slurry pollutants through fly ash and effect analysis, evaluation of the influence of different liquid-solid ratios on the CO2 absorption performance of a fly ash-biogas slurry system and development of a fly ash-biogas slurry coupled collaborative purification system and device. An optimal technical route for removing pollutants in the biogas slurry by the fly ash is provided, so that the concentration of suspended matters, chemical oxygen demand, turbidity and the like of the biogas slurry are reduced to a certain extent, and later utilization of the biogas slurry is facilitated; meanwhile,