催化铁-生物耦合处理草甘膦废水生物出水的可行性研究

目的]针对草甘膦生产过程中排出的废水有机物和有机磷浓度高、可生化性差,传统工艺难以达标的问题,进行催化铁还原技术的可行性研究,为现有处理工艺的改造提供参考。方法]通过摇瓶试验和SBR持续试验,对催化铁还原技术和微生物处理过程耦合处理现有草甘膦废水生物出水COD和磷的去除效果进行研究。结果]将催化铁还原技术与微生物处理过程耦合能够提高草甘膦农药废水的COD和TP去除效果;耦合的SBR系统在微氧条件下对原厌氧出水的COD和TP去除率分别稳定在80.0%和50.0%以上,正磷酸盐浓度在20.00 mg/L以下。结论]催化铁-生物耦合为草甘膦废水的处理和改造提供了一种较好的处理方法。

Research on the Feasibility of the Gglyphosate-producing Wastewater Treated by the Coupling of the Catalytic Iron Technology and Biological Process

Objective] The reference for the improvement of the treatment technology of glyphosate-producing wastewater was provided through the research on the feasibility of catalytic iron reduction technique because the concentration of organic matter and organic phosphorus,which was difficulty in its bio-treatment,was relevant high in the wastewater from glyphosate production.Method] The effect of the coupling technique of catalytic iron reduction and microbiology on the total phosphorus and COD removal in the wastewater was researched through the batch and SBR experiment.Result] The results showed that the process could greatly enhance the total phosphorus and COD removal effect.In micro-aeration condition,the removal efficiencies of the COD and TP could reach over 80% and 50%,respectively and the concentration of phosphorus was less than 20 mg/L.Conclusion] The coupling technique of catalytic iron reduction and microbiology was better method in the treatment of glyphosate-producing wastewater.