Applied Research On Coking Wastewater Treated By Microwave Assisted With Alumina And Modified Activated Carbon

This paper focuses on microwave catalysis with new catalyst（modified alumina and active carbon）for treating coking wastewater.Based on a series of contrast test of new catalyst and urn modified catalyst,the advantages of the new catalyst are analyzed.The paper has mainly studied the three parts:（1）The preparation of new-type catalyst.The activated carbon and alumina are mixed to be a catalyst that has better adsorption and microwave hot.Tests show that the best quality of mixed ratio（modified alumina: activated carbon）is 1: 3.71.（2）The optimum conditions about the treatment of static simulated coking wastewater are as follows: microwave power is 595W;microwave irradiation time is 2 min;the dosage of CuO-γ-Al₂O₃/GAC is 30g/L.The optimum conditions about the treatment of continuous simulated coking wastewater are as follows: the dosage of CuO-γ-Al₂O₃/GAC is 200g;creep pump speed is 60r/min;microwave power is 1200W;p H=1.24;the loading way is mixed packing;solution concentration is 100mg/L.（3）The reuse of modified Alumina and activated carbon is studied.Tests show that the best time of microwave regeneration is 90s.