A method and device for treating hypophosphorous and phosphorous in wastewater
A technology for treating wastewater and hypophosphorus, which is applied in chemical instruments and methods, metallurgical wastewater treatment, water/sewage treatment, etc., can solve the problems of low efficiency of advanced oxidation technology, and achieve low production cost, good treatment effect and easy production Effect
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Embodiment 1
[0029] A method for treating hypophosphorous and phosphorous in waste water, comprising the following steps:
[0030] (1) Place the magnesium aluminum hydrotalcite in a crucible, calcinate it in a muffle furnace at 400°C for 4 hours, and grind it through a 200-mesh sieve after cooling to obtain a magnesium aluminum layered composite oxide;
[0031] (2) inject 20ml / L 30% hydrogen peroxide solution into the oxidation reaction pool (in waste water, hypophosphorus concentration 7.5mg / L, phosphorous acid concentration 2.5mg / L, nickel ion concentration is about 10mg / L waste water) and Stir, and transfer the wastewater to the adsorption reaction pool after 10 minutes of sufficient pre-oxidation;
[0032] (3) Put 20 g / L of the magnesium-aluminum layered composite into the adsorption reaction tank through the magnesium-aluminum layered composite oxide feeding part, use a stirring member to stir at 200 r / min for 4 hours to make the reaction fully, and let it stand for 1 hour to process ...
Embodiment 2
[0034] A method for treating hypophosphorous and phosphorous in waste water, comprising the following steps:
[0035] (1) Place the magnesium aluminum hydrotalcite in a crucible, calcinate it in a muffle furnace at 500°C for 4 hours, and after cooling, grind it through a 200-mesh sieve to obtain a magnesium aluminum layered composite oxide;
[0036] (2) in the oxidation reaction pool (in waste water, hypophosphorus concentration 7.5mg / L, phosphorous acid concentration 2.5mg / L, nickel ion concentration is about the waste water of 10mg / L) inject 40ml / L 30% hydrogen peroxide solution and Stir, and transfer the wastewater to the adsorption reaction pool after 10 minutes of sufficient pre-oxidation;
[0037] (3) Put 20 g / L of the magnesium-aluminum layered composite into the adsorption reaction tank through the magnesium-aluminum layered composite oxide feeding part, use a stirring member to stir at 200 r / min for 4 hours to make the reaction fully, and let it stand for 1 hour to pr...
Embodiment 3
[0039] A method for treating hypophosphorous and phosphorous in waste water, comprising the following steps:
[0040] (1) Place the magnesium aluminum hydrotalcite in a crucible, calcinate it in a muffle furnace at 500°C for 4 hours, and after cooling, grind it through a 200-mesh sieve to obtain a magnesium aluminum layered composite oxide;
[0041] (2) in the oxidation reaction pool (in waste water, hypophosphorus concentration 7.5mg / L, phosphorous acid concentration 2.5mg / L, nickel ion concentration is about the waste water of 10mg / L) inject 40ml / L 30% hydrogen peroxide solution and Stir, and transfer the wastewater to the adsorption reaction pool after 10 minutes of sufficient pre-oxidation;
[0042] (3) Put 40 g / L of the magnesium-aluminum layered composite into the adsorption reaction tank through the magnesium-aluminum layered composite oxide feeding part, use a stirring member to stir at 200 r / min for 4 hours to make the reaction fully, and let it stand for 1 hour to pr...
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