In　this　study　Cu-Fe　bimetallic　aerogel-like　carbon　based　on　sodium　alginate　(SA)　was　prepared　as　catalytic　particle　electrode　by　freeze-drying　and　carbonization　process.　The　characterization　indicates　that　Cu　and　Fe　were　loaded　on　the　surface　and　inside　SA-based　biomass　carbon　(SAC)　in　the　form　of　a　zero-valent　copper-iron　alloy　to　form　a　Cu-Fe/Sodium　alginate　Carbon　(Cu-Fe/SAC)　particle　electrode.　After　using　a　three-dimensional　ElectroFenton　(3D-EF)　system　with　the　prepared　particle　electrode,　the　optimal　experimental　operating　parameters　for　removal　of　fulvic　acid　(FA)　were　obtained　as　follows:　voltage　2.5　V,　pH　5.4,　and　catalyst　dosage　4　g/L.　A　removal　efficiency　from　82.9%　to　74.4%　for　FA　was　achieved　in　a　wide　pH　range　of　3-7.　Comparison　experimental　results　indicate　that　the　3D-EF　system　with　bimetallic　Cu-Fe/SAC　as　the　catalytic　particle　electrode　(CPE)　has　higher　FA　degradation　rate　and　mineralization　efficiency　than　two-dimensional　Electro-Fenton　(2D-EF)　system,　even　higher　than　the　3D-EF　system　with　Cu/SAC　or　Fe/SAC.　Hydroxyl　radicals　((OH)-O-center　dot)　trapping　experiments　showed　that　the　main　contribution　to　FA　degradation　and　mineralization　in　the　3D-EF　system　would　be　the　center　dot　OH　radical　produced　by　a　heterogeneous　Fenton-like　reaction.　The　comparison　and　trapping　experiment　results　indicate　that　the　possible　mechanism　of　the　3D-EF　with　Cu-Fe/SAC　as　CPE　for　FA　degradation　may　involve　adsorption,　anode　oxidation,　heterogeneous　and　homogeneous　Fenton-like　reactions.