A large amount of wastewater is produced in the process of 2,4,6‐Triamino‐1,3,5‐trinitrobenzene (TATB) production, which is harmful to the environment and human health. In this work, the removal rate of chemical oxygen demand (COD) from TATB wastewater was investigated by using hydrodynamic cavitation (HC), chlorine dioxide (ClO₂), and the combination of the HC and ClO₂. We explored the effects of different operating parameters on extent of degradation including time (10–60 min), concentration of ClO₂ (25–150 mg/L) and initial pH (6, 9.25). The result showed that the reduction of COD from explosive wastewater with initial concentration of 5407 mg COD/L was 65.9 % after a 60 min treatment with a ClO₂ dosage of 150 mg/L at a pH of 6. The COD removal process by the HC/ClO₂ conforms to a pseudo‐first‐order kinetic equation with a reaction rate of 20.8×10⁻³ min⁻¹. We were able to determine that the HC/ClO₂ method has a synergistic effect on TATB wastewater treatment with a synergetic coefficient of 3.01. By comparing the cavitational yield and cost of each process, the HC/ClO₂ has a higher energy efficiency (26.78×10⁻³ mg/J). In conclusion, the HC/ClO₂ composite process is more economical, effective, and suitable for large‐scale commercial operations.

中文翻译：

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水力空化结合二氧化氯处理2,4,6-三氨基-1,3,5-三硝基苯爆炸性废水

2,4,6-三氨基-1,3,5-三硝基苯（TATB）生产过程中会产生大量废水，这对环境和人类健康有害。在这项工作中，利用水力空化（HC），二氧化氯（ClO ₂）以及HC和ClO ₂的组合，研究了TATB废水中化学需氧量（COD）的去除率。我们探索了不同操作参数对降解程度的影响，包括时间（10-60分钟），ClO ₂浓度（25-150 mg / L）和初始pH（6、9.25）。结果表明，用ClO ₂处理60分钟后，初始浓度为5407 mg COD / L的爆炸废水中的COD减少率为65.9％。pH值为6时，其剂量为150 mg / L。HC / ClO ₂去除COD的过程符合拟一级动力学方程，反应速率为20.8×10 ^-3  min ^-1。我们能够确定HC / ClO ₂方法对TATB废水处理具有协同效应，协同系数为3.01。通过比较每个过程的空化产率和成本，HC / ClO ₂具有更高的能量效率（26.78×10 ^-3  mg / J）。总之，HC / ClO ₂复合工艺更加经济，有效，并且适合大规模商业运营。