Abstract The centrifugal mother liquor (CML) discharged by polymer enterprises is a typical refractory organic wastewater with a variety of pollutants. This paper proposes a novel homogeneous and heterogeneous mixed Fenton oxidation strategy for the degradation of phenol and other organic compounds in CML. First, two promising CML treatment schemes are selected from six alternatives. Second, with the minimal equipment investment cost as object, a better CML treatment scheme is selected from these two alternatives using reactor network synthesis method. This optimal scheme is further modeled and simulated by Aspen Plus, and the effect of Fe2+ and H2O2 flowrate on organic compound removal rate is studied by sensitivity analysis. The removal rate of organic compound is found increasing from 71 % to 82.6 % under the optimal flowrate of Fe2+ and H2O2. Finally, the importance of each variable in CML treatment process is evaluated based on mutual information. Three variables including the temperature of homogeneous reactor, the liquid level of homogeneous reactor, and the temperature of heterogeneous reactor are selected as key variables in the stability control study by Aspen Dynamics. The dynamic simulation results prove that the CML treatment process has high stability in the face of disturbances.

中文翻译：

---

PVC工业离心母液废水处理工艺概念设计

摘要 聚合物企业排放的离心母液（CML）是典型的难降解有机废水，含有多种污染物。本文提出了一种新的均相和非均相混合芬顿氧化策略，用于降解 CML 中的苯酚和其他有机化合物。首先，从六个备选方案中选择了两个有前景的 CML 治疗方案。其次，以最小的设备投资成本为目标，采用反应器网络合成法从这两种方案中选择出较好的CML处理方案。该最优方案由 Aspen Plus 进一步建模和模拟，并通过灵敏度分析研究 Fe2+ 和 H2O2 流量对有机化合物去除率的影响。在Fe2+和H2O2的最佳流量下，有机化合物的去除率从71%提高到82.6%。最后，基于互信息评估每个变量在CML治疗过程中的重要性。Aspen Dynamics选择均相反应器温度、均相反应器液位和非均相反应器温度三个变量作为稳定性控制研究的关键变量。动态仿真结果证明CML处理过程在干扰下具有较高的稳定性。