Pretreatment method and treatment system for improving biodegradability of m-phenylenediamine-containing wastewater

The invention discloses a pretreatment method and a treatment system for improving biodegradability of m-phenylenediamine-containing wastewater. The addition speed of the bivalent copper ions and the pH value of a reaction system are controlled at the same time in a parallel flow feeding mode, so that coordination polymerization reaction of the bivalent copper ions and MPD is rapidly carried out, the reaction system is maintained under the optimal process condition, and the method has the advantages of being high in reaction speed, high in removal efficiency and low in economic cost; finally, terminal treatment is carried out through iron-carbon micro-electrolysis reaction and Fenton oxidation reaction, possible residual copper ions, MPD and other pollutants in the wastewater are removed, COD is further reduced (the removal rate can reach 99.53%), secondary pollution is not generated, and the stability of the process is also ensured. 本发明公开了一种提高含间苯二胺废水可生化性的预处理方法及处理系统。通过并流加料的方式同时控制二价铜离子的添加速度和反应体系的pH值，以快速进行二价铜离子