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A method for producing high-concentration aluminum-zinc-magnesium multi-ion composite water purifier

A technology of aluminum-zinc-magnesium polyion and water purifying agent, which is applied in the direction of flocculation/sedimentation water/sewage treatment, etc., can solve the problems of long production cycle and cumbersome steps, and achieve the effect of saving cost, speeding up separation speed and improving removal rate

Active Publication Date: 2011-12-14
童益
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The normal production of high-concentration aluminum-zinc-magnesium multi-ion composite water purifier requires a multi-step method. First, pressurize and heat hydrochloric acid or sulfuric acid and bauxite to 110-120°C for 2 hours, then add calcium aluminate powder and react for 2 hours. Then add magnesium oxide for alkalization reaction for 1 hour, and finally add zinc chloride, and then remove the residue through static precipitation or pressure filtration to obtain the product high-concentration aluminum-zinc-magnesium multi-ion composite water purifier. This method has a long production cycle and requires heating. , the steps are cumbersome

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0027] Embodiment 1: a kind of method of producing high-concentration aluminum-zinc-magnesium multi-ion composite water purifying agent, the steps are as follows: its formula ratio is counted by weight:

[0028] (1) Take 100 parts of aluminum alloy sludge containing various metals, add 10-30 parts of circulating filtrate (water) and 3-10 parts of conditioner, mix well, and pump it into the variable filter chamber through a diaphragm pump. After the initial filtration in the filter, the filter cake with a solid content of 10% is obtained, and then hydraulically filtered through the filter plate hydraulic device to form a dry sludge filter cake with a solid content of 50%, and the filtrate is reused as a circulating filtrate. Finally, the dry sludge is crushed by a pulverizer;

[0029] The conditioning agent was purchased from Hangzhou Jingwang Filter Press Co., Ltd.

[0030] (2) In the anti-corrosion reaction kettle (pool), it is 10 parts of waste sulfuric acid that the mass c...

Embodiment 2

[0036] Embodiment 2: a kind of method of producing high-concentration aluminum-zinc-magnesium multi-ion composite water purifying agent, the steps are as follows: its formula ratio is counted by weight:

[0037] (1) Take 100 parts of aluminum alloy sludge containing various metals, add 10-30 parts of circulating filtrate and 3-10 parts of conditioning agent, mix well, and pump it into the variable filter chamber filter press through a diaphragm pump After primary filtration and pressure maintenance, a filter cake with a solid content of 20% is obtained, and then hydraulically filtered through the filter plate hydraulic device to form a dry sludge filter cake with a solid content of 70%. The filtrate is reused as a circulating filtrate, and finally crushed machine crushed dry sludge;

[0038] The conditioning agent was purchased from Hangzhou Jingwang Filter Press Co., Ltd.

[0039] (2) In the anti-corrosion reaction kettle (pool), inject 30 parts of waste hydrochloric acid wi...

Embodiment 3

[0044] Embodiment 3: a kind of method of producing high-concentration aluminum-zinc-magnesium multi-ion composite water purifying agent, the steps are as follows: its formula ratio is counted by weight parts:

[0045] (1) Take 100 parts of aluminum alloy sludge containing various metals, add 10-30 parts of circulating filtrate and 3-10 parts of conditioning agent, mix well, and pump it into the variable filter chamber filter press through a diaphragm pump After primary filtration and pressure holding, a filter cake with a solid content of 15% is obtained, and then hydraulically filtered through the filter plate hydraulic device to form a dry sludge filter cake with a solid content of 60%. The filtrate is reused as a circulating filtrate, and finally crushed machine crushed dry sludge;

[0046] The conditioning agent was purchased from Hangzhou Jingwang Filter Press Co., Ltd.

[0047] (2) In the anticorrosion reaction kettle (pool), inject 60 parts of industrial hydrochloric a...

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Abstract

The invention relates to a method for producing a high concentration composite water purifying agent with multi-ions of aluminium, zinc and magnesian. The method is characterized by comprising the following steps of: adding a circulation filtrate and a modifying agent into aluminium alloy sludge containing multiple metals, mixing them fully, and conducting hydraulic filtration through a filter plate hydraulic device so as to form a dry sludge filter cake, which is then delivered to a pulverizer for pulverizing, thus obtaining dry sludge; adding an acid into the dry sludge; adjusting the pH value by controlling the adding amount of the sludge; conducting stirring for reaction continuously at a normal temperature to make the dry sludge dissolved completely, thus obtaining a composite water purifying agent (A) with multi-ions of aluminium, zinc and magnesian; adding a heavy metal trapping agent into the obtained composite water purifying agent (A) with multi-ions of aluminium, zinc and magnesian, continuing to stir the agent and pouring it to a sedimentation basin, then carrying out solid-liquid separation with a filter press. Thus, the liquid phase is a composite water purifying agent (B) with multi-ions of aluminium, zinc and magnesian, while the solid phase is a residue of insoluble heavy metal complexes and insoluble substances. The method of the invention effectively solves the problem of treating the sludge, creates remarkable economic benefits, and eliminates the risk of environmental pollution caused by the heavy metal sludge.

Description

technical field [0001] A method for producing a high-concentration aluminum-zinc-magnesium multi-ion composite water purifier. The invention relates to a method for preparing a high-concentration aluminum-zinc-magnesium multi-ion composite water purifier by using aluminum alloy sludge containing various metals as a raw material. The invention utilizes the aluminum alloy sludge containing various metals produced by aluminum alloy processing, and produces a high-concentration aluminum-zinc-magnesium multi-ion composite water purifier by means of pressure filtration and reaction, which is used for treating waste water and belongs to the technical field of environmental protection. Background technique [0002] Since a large amount of sludge will be produced in the processing and production of aluminum alloy, the sludge contains utilizable components (aluminum, zinc, magnesium) and harmful components, whether it can be dissolved and the useful components can be fully utilized, an...

Claims

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Application Information

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IPC IPC(8): C02F1/52
Inventor 童益
Owner 童益
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