Method for treating organic wastewater by catalytic wet oxidation method
A technology for catalyzing wet oxidation and organic wastewater, which is applied in the fields of oxidized water/sewage treatment, chemical instruments and methods, catalyst activation/preparation, etc., and can solve the problems of high energy consumption, increased industrial wastewater treatment cost, and low organic wastewater treatment efficiency. , to achieve high economic and environmental benefits
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Embodiment 1
[0019] Treatment of pharmaceutical wastewater:
[0020] The COD of organic wastewater in a chemical synthesis pharmaceutical factory is 20000-30000 mg / L. The straw is crushed into particles with a diameter of less than 5mm and added to the organic wastewater. The mass ratio of the addition amount to the organic wastewater is 10%. The mixed solution is added to the hydrothermal reaction In the kettle, the reaction temperature of the in-situ reaction under anoxic conditions is 160-180 °C, and the reaction time is 5-6 h, one or both of straw carbide or straw carbon are generated, and the reaction temperature is continued to increase to 200 °C. ~220℃, the reaction pressure is 2~2.5MPa, the reaction time is 1~2h, a certain amount of oxygen (the amount of oxygen is calculated according to the COD of the organic wastewater), preferably 180% of the oxygen demand, the COD of the organic wastewater is removed The rate can reach more than 80%. In this process, the catalyst is used to ca...
Embodiment 2
[0022] Treatment of chemical wastewater:
[0023] The COD of organic wastewater from a chemical plant is 40000-50000mg / L. The straw is crushed into particles with a diameter of less than 5mm and added to the organic wastewater. The mass ratio of the addition amount to the organic wastewater is 8%. The mixed solution is added to the hydrothermal reactor , the reaction temperature of the in-situ reaction under anoxic conditions is 180-190 °C, and the reaction time is 5-6 h, one or both of straw carbide or straw carbon are generated, and the reaction temperature is continued to increase to 200-220 °C. ℃, the reaction pressure is 2~2.5MPa, the reaction time is 2.0h, feed a certain amount of oxygen (the amount of oxygen is calculated according to the COD of the organic waste water, preferably 200% of the oxygen demand. The COD removal rate of the organic waste water can reach 80% This process utilizes the catalyst produced in situ to catalyze the wet oxidation reaction of organic m...
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