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Production process of aluminium iron sulfate polymer as composite water purifying agent

A technology for the production of polyaluminium-ferric sulfate, which is applied in the direction of aluminum sulfate, sulfate preparations, aluminum-sulfur compounds, etc., to achieve excellent effects, low production costs, and easy operation

Inactive Publication Date: 2002-02-27
邓中杰
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Problems solved by technology

[0003] The technical problem to be solved by the present invention is to industrially produce composite water purifying agent polyaluminum ferric sulfate by using waste residue containing iron oxide from a sulfuric acid plant. The water purification quality is high and the effect is good. Waste, reduce treatment costs, reduce environmental pollution

Method used

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Embodiment Construction

[0009] The waste residue after the production of sulfuric acid by the sulfuric acid plant is used as raw material, and the Fe in the waste residue 2 o 3 Content 50%, Al 2 o 3 The content is 15%, the leaching rate is 60%, the acid concentration is 45%, and the sulfuric acid concentration is 92.5%.

[0010] According to stoichiometry, first add 990kg of water into the reactor, then pour 1000kg of slag into it, then add 810kg of sulfuric acid, and react naturally for two hours; then add the same amount of water for dilution, then discharge the reactants into the settling tank, add 10g of flocculant polyacrylamide settles naturally, settles for 2 to 4 hours, separates solid and liquid, and controls the pH value of the clear liquid at about 2; put the above clear liquid into the polymerization container, and 2+ Content calculation Add about 25-30kg of H 2 o 2 , H 2 o 2 Spray from the bottom of the container into the clear liquid, and quickly oxidize and polymerize with the c...

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Abstract

The production process of compound water-cleaning agent aluminium iron polysulfate uses the iron oxide contained offscum produced after production of sulfuric acid in sulfuric acid plant as raw material, and adopting the folloiwng steps: according to the chemometric, adding water, offscum and sulfuric acid into reactor in turn to make reaction, then adding isometric water to make dilution, and discharging diluted reactant into settling tank, adding small quantity of flocculant to make natural settling and solid-liquid separation, pumping said clear liquor into polymerization container, addingH2O2 and making it and the clear liquor to implement quick oxidation and polymerization to obtain the invention finished product liquor, evaporating and dewatering to obtain its natural crystal, thenbreaking it into granular or powdered material to obtain the invented solid aluminium iron polysulfate. It can obtain good sewage treatment effect.

Description

(1) Technical field [0001] The invention belongs to the production process of water purifying agent, in particular to a production process of producing composite water purifying agent polyaluminum ferric sulfate by utilizing waste residue containing iron oxide in a sulfuric acid plant. (2) Background technology [0002] Aluminum and iron polymer inorganic polymer water purifiers are a new type of chemical industry researched and developed from the 1970s to the 1990s, which has played a great role in improving people's quality of life and improving the environment. There are many types of water purifiers, and the production processes are different. At present, the waste residue of the sulfuric acid plant is discharged randomly, causing environmental pollution, which urgently needs to be treated. Chinese patent CN1219507A discloses a "one-step production process of polymeric ferric sulfate solid water purifying agent", which uses iron oxide-containing waste residues from iron...

Claims

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Application Information

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IPC IPC(8): C01B17/96C01F7/76C02F1/52
Inventor 邓中杰茹江林李玉香
Owner 邓中杰
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