Catalysis oxidation experiments on coal-to-glycol biochemical effluents with microwave plasma technology

Microwave-plasma catalysis oxidation technology was used for advanced oxidation experiments on coal-to-glycol biochemical effluents. The effects of the different methods, the plasma dosage, catalyst dosage, and the reaction time on the removal of COD, UV₂₅₄, and UV₄₁₀ in the biochemical effluents were investigated. The results showed that microwave-plasma catalysis oxidation technology was quicker and superior, in comparison with other methods, for treating the biochemical effluents of coal-to-glycol biochemical effluents. In optimal conditions, with the catalyst dosage 20 g·L^-1, reaction time 40 min, microwave power 660W, and the plasma dosage 80 mg ·L^-1, the removal rate for COD, UV₂₅₄, and UV₄₁₀ reached 78%, 52%, and 68%, respectively. This effluent met the requirements of the national integrated wastewater discharge standard (GB 8978-1996).