Butadiene styrene rubber wastewater treatment process

The invention relates to a water treatment process and in particular relates to a butadiene styrene rubber wastewater treatment process. The process sequentially comprises the following steps: allowing butadiene styrene rubber wastewater with the CODcr of 800-1000mg/l and the SS of 100-150mg/l to flow through a cross flow type coalescent pack area at the flow of 1-3m<3>/m<2>.min, and adding a hydrogen peroxide oxidizing agent and a ferrous sulfate catalyst into the cross flow type coalescent pack area for carrying out a catalytic oxidation reaction; adding a flocculating agent into the reacted wastewater, performing electrical neutralization or double electrode layer compression on the added flocculating agent and colloidal particles in water for agglomeration and destabilization, agglomerating the destabilization particles to form a primary micro flocculating constituent; adding electrolyte and a coagulant with charged particles opposite to the electrolyte, neutralizing the charged particles in the water, so that the particles are agglomerated into the flocculating constituent; separating by adopting an inclined tube settling basin and under the action of gravity, thereby obtaining effluent with the CODcr of less than or equal to 400. The reaction conditions are mild, the treatment effect is stable, the B/C ratio of the treated effluent is improved to be over 0.3, and the process is suitable for a subsequent biochemical treatment system.