Preparation method for production of polyaluminium chloride water purification agent through aluminum ash
A technology of water purifying agent and aluminum ash, which is applied in chemical instruments and methods, water pollutants, water/sewage treatment, etc., and can solve problems such as high production cost, small amount of ammonia escape, and poor water purification effect of water purifying agent , to achieve the effect of increasing adsorption performance, improving adsorption activity, and increasing adsorption capacity
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Embodiment 1
[0038] Aluminum ash pretreatment:
[0039] The aluminum ash is a mixture of infusible inclusions, oxides, additives, etc., floating on the surface of the aluminum melt during the production process of smelting aluminum and aluminum alloy.
[0040] (a) The aluminum ash and water are mixed and dissolved at a mass ratio of 1:2 under normal temperature conditions, and the solution is continuously stirred during the dissolution process at a stirring speed of 150-200 rpm;
[0041] (b) Lime (Ca(OH) is added during the dissolution process 2 Gradually adjust the solution to alkaline, increase the stirring intensity when the PH value reaches between 11-12.5, adjust the stirring speed to 400-500 rpm, add hydrogen peroxide to the solution for strong oxidation, so that the ammonia in the solution is Maximum decomposition and volatilization; at the same time, the reaction solution contains NH under alkaline conditions 4 OH, through H 2 O 2 Strong oxidation and NH 4 The OH dissolves, so that the di...
Embodiment 2
[0060] Aluminum ash pretreatment:
[0061] The aluminum ash is a mixture of infusible inclusions, oxides, additives, etc., floating on the surface of the aluminum melt during the production process of smelting aluminum and aluminum alloy.
[0062] (a) Mix and dissolve aluminum ash and water at a mass ratio of 1:3 under normal temperature conditions, and constantly stir the solution during the dissolution process at a stirring speed of 150-300 rpm;
[0063] (b) Lime (Ca(OH) is added during the dissolution process 2 Gradually adjust the solution to alkaline, increase the stirring intensity when the pH value reaches between 11-12.5, adjust the stirring speed to 400-800 rpm, add hydrogen peroxide to the solution for strong oxidation, so that the ammonia in the solution is Maximum decomposition and volatilization; at the same time, the reaction solution contains NH under alkaline conditions 4 OH, through H 2 O 2 Strong oxidation and NH 4 The OH dissolves, so that the dirt in the organic m...
Embodiment 3
[0079] Aluminum ash pretreatment:
[0080] The aluminum ash is a mixture of infusible inclusions, oxides, additives, etc., floating on the surface of the aluminum melt during the production process of smelting aluminum and aluminum alloy. (Increase indicators)
[0081] (a) Mix and dissolve aluminum ash and water at a mass ratio of 1:3 under normal temperature conditions, and constantly stir the solution during the dissolution process at a stirring speed of 150-300 rpm;
[0082] (b) Lime (Ca(OH) is added during the dissolution process 2 Gradually adjust the solution to alkaline, increase the stirring intensity when the pH value reaches between 11-12.5, adjust the stirring speed to 400-800 rpm, add hydrogen peroxide to the solution for strong oxidation, so that the ammonia in the solution is Maximum decomposition and volatilization; at the same time, the reaction solution contains NH under alkaline conditions 4 OH, through H 2 O 2 Strong oxidation and NH 4 The OH dissolves, so that th...
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