Heterogeneous　catalytic　ozonation　(HCO)　is　a　promising　strategy　for　removing　organic　pollutants　from　wastewater,　but　its　practical　deployment　is　limited　by　the　scavenging　effects　of　coexisting　constituents　(e.g.,　inorganic　anions　and　humic　acids)　on　hydroxyl　radicals　(center　dot　OH).　Herein,　we　developed　atomically　dispersed　single-atom　copper@carbon　nanospheres　(Cu-NC-3),　which　effectively　decompose　ozone　(O3)　to　generate　surface　atomic　oxygen　(*O),　as　confirmed　by　the　in　situ　Raman　experiments　and　theoretical　calculations.　The　*O　species　rapidly　degrade　60%　of　oxalic　acid　(OA)　within　1　min,　while　protonation　of　*O　produces　surface-confined　hydroxyl　radicals　(center　dot　OHad)　that　achieve　94.7%　removal　of　benzoic　acid　(BA)　and　other　aromatic　compounds.　Compared　to　ozonation　alone,　the　O3/Cu-NC-3　system　enhances　OA　and　BA　removal　by　34.5-　and　1.5-fold,　respectively.　Atomic-level　Cu　dispersion　induces　carbon　defects　that　enrich　surface　O3,　and　Cu-N4　coordination　sites　promote　its　conversion　to　*O　and　center　dot　OHad.　This　dual-oxidation　mechanism　effectively　ensures　and　enables　broad-spectrum　pollutant　removal　and　exceptional　catalytic　stability　under　long-term　operation.　Therefore,　the　O3/Cu-NC-3　system　offers　a　robust　and　efficient　approach　for　treating　real　wastewater　containing　diverse　interfering　species.