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Process for preparing waste water purifying agent and application thereof

A technology for wastewater treatment and water purifying agent, which is applied in the direction of flocculation/sedimentation water/sewage treatment, etc. It can solve the problems of zero discharge and the inability to fully recycle the tailings of papermaking wastewater, achieve obvious environmental benefits, improve effective production time, Ensure the effect of cleaner production

Inactive Publication Date: 2005-01-26
罗斌华 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For the papermaking industry, its wastewater treatment is a difficult problem. The above-mentioned water purifiers all have the following common shortcomings: that is, the papermaking wastewater tailings in the papermaking industry wastewater treatment cannot be fully recycled and zero discharge can be achieved.

Method used

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  • Process for preparing waste water purifying agent and application thereof
  • Process for preparing waste water purifying agent and application thereof

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Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0020] The raw material for the preparation of Type A water purifier of the present invention is the by-product ferrous aluminum salt produced by the sulfuric acid method in a chemical plant, and the ferrous aluminum salt is oxidized with sulfuric acid and hydrogen peroxide strong oxidant, and after 5-6 hours of hydrolysis reaction, a certain amount of ferrous aluminum salt is formed after polymerization. Polymerized iron with a high degree of alkalization, on this basis, add phosphate, react at a certain temperature for 30-60 minutes to form a liquid polymer, and after concentration and drying at 60-90°C, a gray-white solid product can be obtained.

[0021] In industrial production, the ferrous aluminum salt is often oxidized with air or oxygen under the action of a catalyst, and in the laboratory, a strong oxidant is often used for direct oxidation.

[0022] The following two reactions will occur when a strong oxidizing agent is added to the ferrous aluminum salt solution:

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Abstract

The invention discloses a process for preparing waste water purifying agent characterized in that, the waste water purifying agent comprises type A water purification agent and type B water purification agent, the method for preparing the type A water purification agent consists of oxidizing ferrous aluminium salts with strong oxidation agent, hydrolyzing and polymerizing to obtain polymeric ferrum of a finite alkalization degree, charging phosphates on this basis, reacting to produce liquid polymeric compound, concentrating and drying to obtain the hoary solid product.

Description

technical field [0001] The invention relates to the technical field of waste water treatment, in particular to a preparation method and application of a water purifying agent for waste water treatment in the papermaking industry. Background technique [0002] Wastewater, especially industrial wastewater, is an important factor of water resource pollution at present. Therefore, wastewater treatment, especially industrial wastewater treatment, is an important issue that people have to solve at present. Therefore, some people use water purifiers for treatment and have achieved certain results. Effect, as the application number is 01111133, the application date is March 19, 2001, and the invention name is a kind of invention patent application for a kind of dispersed combined water purifying agent for purifying sewage and its usage. It discloses a kind of water purifying agent for purifying sewage. Dispersed combined water purifier and its usage. The components of the water pur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/52
Inventor 罗斌华
Owner 罗斌华
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