It　is　necessary　to　put　all　aspects,,namely　raw　water　characteristics,　corresponding　FBWW,　and　coagulation　mechanisms,　i.e.,　charge　neutralization　and　sweep　flocculation　together　to　make　clear　the　dissolved　organic　matter　(DOM)　removal　characteristics　and　the　fate　of　fractionations　in　recycle　design.　The　DOM　characteristics　of　molecular　weight　(MW)　distribution,　hydrophobicity,　and　fluorescence　in　source　water　W1　(synthesized　water)　and　W2　(＂Longtan＂　lake　water),　FBWW　and　treated　water　samples　therefore　are　identified,　and　three　recycling　ratios　of　2%,　5%,　and　8%　as　compared　to　control　(0%)　are　conducted.　It　is　found　that　DOM　within　FBWW　becomes　more　hydrophilic　and　lower　MW　as　compared　to　corresponding　source　water.　Recycling　trials　indicate　that　higher　DOM　concentrations　and　more　low-MW　fractions　are　not　of　any　benefit　to　enhance　UV254　and　DOC　removal.　Hydrophobic　acid　can　be　further　eliminated　in　case　recycling　particles　mainly　produced　by　sweep　flocculation,　while　weakly　hydrophobic　acid　and　hydrophilic　fraction　can　be　enhanced　and　removed　under　recycling　particles　mainly　formed　by　charge　neutralization.　Higher　molecular　weight　fraction　(＞30　kDa)　exhibits　potentially　enhanced　removal　at　preferred　recycling　ratio　of　5%.　Fluorescent　characteristics　analysis　demonstrate　that　recycling　FBWW　can　effectively　improve　humic-like　substances　removal,　but　the　protein-like　matters　are　resistant　to　be　eliminated　with　unvaried　structure.