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

Active Publication Date: 2019-10-08
云南中泰嘉华环保科技有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this treatment process mainly has the following problems: (1) the amount of ammonia escape is small, which cannot meet the requirements of subsequent deep processing; (2) the water purification effect of the obtained water purifier is relatively poor; (3) the production cost of the product is high.

Method used

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  • Preparation method for production of polyaluminium chloride water purification agent through aluminum ash
  • Preparation method for production of polyaluminium chloride water purification agent through aluminum ash
  • Preparation method for production of polyaluminium chloride water purification agent through aluminum ash

Examples

Experimental program
Comparison scheme
Effect test

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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Abstract

The invention relates to a preparation method for production of a polyaluminium chloride water purification agent through aluminum ash, and belongs to the technical field of water purification agent preparation. The preparation method comprises the following preparation steps that (1) an aluminum ash pretreated material, nano magnesium carbonate, aluminium oxide and calcium carbonate are mixed; (2) a mixed material is calcinated; (3) the calcinated material is crushed; (4) the calcinated and crushed material, hydrochloric acid and water are compounded; and (5) the compounded material is cured.According to the preparation method for production of the polyaluminium chloride water purification agent through the aluminum ash, resource utilization of industrial hazardous waste aluminum ash iseffectively realized, a polyaluminium chloride product conforming to GB/T22627-2014 is obtained, as for the prepared polyaluminium chloride water purification agent, compared with a common water purification agent, the adsorbing performance of the prepared inorganic water purification agent is significantly improved, and meanwhile, the effect of efficiently removing phosphorus and arsenic in sewage is achieved.

Description

Technical field [0001] The invention belongs to the technical field of water purifying agent preparation, and specifically relates to a preparation method for producing polyaluminum chloride water purifying agent by using aluminum ash. Background technique [0002] Polyaluminum chloride is a kind of water purification material, inorganic polymer coagulant, also referred to as polyaluminum, the English abbreviation is PAC, it is between AlCl 3 And Al(OH) 3 Among a kind of water-soluble inorganic polymer. The fundamental difference between polyaluminum chloride and traditional inorganic coagulants is that traditional inorganic coagulants are low-molecular crystalline salts, while the structure of polyaluminum chloride is composed of multi-element carboxyl complexes with variable morphology, flocculation and precipitation speed is fast, suitable Wide pH value range, non-corrosive to pipeline equipment, obvious water purification effect, can effectively remove water color quality SS,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/52C02F1/00C02F101/10
CPCC02F1/5236C02F1/00C02F2101/103
Inventor 孙建明王占郭俊光孙华磊王腾辉
Owner 云南中泰嘉华环保科技有限责任公司
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