Method for electrolysis-catalytic oxidation joint treatment on salt-containing organic wastewater
A technology of organic wastewater and catalytic oxidation, which is applied in the fields of oxidized water/sewage treatment, chemical instruments and methods, water/sewage treatment, etc. safe effect
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[0029] Pass 10L of high-salt organic wastewater with an initial COD of 10,000 mg / L into the electrolytic cell, adjust the voltage to 20V, and electrolyze for 20 minutes. Use a peristaltic pump to pump the electrolyzed wastewater into a fixed-bed reactor with 120g of catalyst at a space velocity of 1.6h -1 Continuous flow through the bed for catalytic oxidation reaction. The results are compared with the high-salt wastewater with a certain amount of sodium hypochlorite as an oxidant that is directly catalyzed and oxidized through a fixed bed.
[0030] In the comparative direct oxidation treatment by sodium hypochlorite, the amount of sodium hypochlorite added is determined by the initial COD value of high-salt organic wastewater. Usually calculated as follows:
[0031]
[0032] In practical applications, use 1.2 times the calculation amount.
[0033] COD was determined by the national standard GB11914-89 dichromate method in wastewater. The formula for calculating COD re...
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