Vacuum potassium carbonate desulfurization waste liquid treatment system and method

The invention relates to the technical field of wastewater treatment, in particular to a vacuum potassium carbonate desulfurization waste liquid treatment system and method.The system comprises a reverse osmosis device, a subcritical water oxidation device and a biochemical treatment device which are sequentially connected; wherein the reverse osmosis device is configured to perform reverse osmosis treatment on the desulfurization waste liquid obtained by the vacuum potassium carbonate desulfurization process to obtain a concentrated solution; the subcritical water oxidation device is configured to perform subcritical water oxidation treatment on the concentrated solution to obtain a treated solution; and the biochemical treatment device is configured to perform biochemical treatment on the treatment liquid and then discharge the treatment liquid after reaching the standard. Pollution resistance and separation capacity of reverse osmosis are fully utilized, toxic substances and organic matters are concentrate