Wet-oxidation treatment method of wastewater generated in wood cooking processing process
A technology of wet oxidation and treatment method, which is applied in the process of wastewater treatment, oxidized water/sewage treatment, water/sewage treatment, etc. The effects of short working hours, small footprint and low operating costs for wastewater treatment
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Embodiment 1
[0031] Put 240 milliliters of wood cooking waste water in an autoclave with a volume of 500 milliliters, a pressure resistance of 35 MPa, and a propulsion stirring paddle, then add 1.2 grams of catalyst, close the lid of the kettle, and then feed oxygen to an oxygen partial pressure of 3.5 MPa, confirm After the system has no leaks, start stirring to 400 rpm; the linear speed is 0.84 m / s, heat the autoclave to 240 ° C, keep it warm for 45 minutes, then cool to room temperature and discharge the material, filter the catalyst, and the treated wastewater is pure and transparent. Use (GB11914 -89) Standard test COD Cr value, COD Cr The value is 97mg / L, reaching the national first-level emission standard.
Embodiment 2
[0033] Put 240 milliliters of wood cooking wastewater into an autoclave with a volume of 500 milliliters, a pressure resistance of 35 MPa, and a propulsive stirring paddle, then add 1.2 grams of catalyst, close the lid of the kettle, and then feed oxygen to an oxygen partial pressure of 3.0 MPa to confirm After the system has no leakage, start stirring to 400 rpm; the linear speed is 0.84 m / s, heat the autoclave to 250°C, keep it warm for 35 minutes, then cool to room temperature and discharge the material, filter the catalyst, the treated wastewater is pure and transparent, use (GB11914 -89) Standard test COD Cr value, COD Cr The value is 92mg / L, reaching the national first-level emission standard.
Embodiment 3
[0035] Put 240 milliliters of wood cooking wastewater into an autoclave with a volume of 500 milliliters, a pressure resistance of 35 MPa, and a propulsive stirring paddle, then add 1.2 grams of catalyst, close the lid of the kettle, and then feed oxygen to an oxygen partial pressure of 3.2 MPa to confirm After the system has no leaks, start stirring to 400 rpm; the linear speed is 0.84 m / s, heat the autoclave to 250°C, keep it warm for 40 minutes, then cool to room temperature and discharge the material, filter the catalyst, and the treated wastewater is pure and transparent. Use (GB11914 -89) Standard test COD Cr value, COD Cr The value is 89mg / L, reaching the national first-level emission standard.
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