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Preparation method of HCA-PAC composite water treatment agent

A technology of water treatment agent and PH value, which is applied in the direction of water treatment parameter control, water/sewage treatment, process wastewater treatment, etc. It can solve the problems of rising sludge treatment costs, failure to meet the use requirements, and inconvenient follow-up treatment, etc., to achieve The effect of decontamination treatment is remarkable, the risk of production is reduced, and the preparation method is scientific and reasonable.

Inactive Publication Date: 2019-07-05
YUEYANG FOREST & PAPER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the pulp and paper industry, for wastewater flotation treatment, the traditional process is to add polyferric sulfate (PFS) and polyacrylamide (PAM) as flocculants to treat wastewater, but in the subsequent sludge drying process , it is necessary to add more polyaluminum chloride (PAC) for reaction, resulting in an increase in the cost of sludge treatment. At the same time, the sludge generated by adding polyferric sulfate (PFS) is subsequently sent to thermoelectric co-firing processing, and the sludge It will turn red and cannot be recycled as building materials. In addition, with the further requirements of sustainable development of resources and environmental protection of production, the traditional polymeric ferric sulfate (PFS) + polyacrylamide (PAM) is used as a waste liquid treatment agent, and the production cost Higher, it will bring new impurities, which will bring inconvenience to the subsequent treatment; while using polyaluminum chloride (PAC) and polyacrylamide (PAM) as waste liquid treatment agents, the treatment effect is not ideal and cannot meet the use requirements. needs improvement

Method used

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  • Preparation method of HCA-PAC composite water treatment agent

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Comparison scheme
Effect test

Embodiment 1

[0023] A kind of preparation method of HCA-PAC composite water treatment agent of the present invention, comprises the following steps:

[0024] (1) Using the wet crushing method, take 15 parts of industrial aluminum-containing solid waste (material dryness 30%) produced by a processing factory in a certain place in Hunan, and crush them into fine blocks or powder to obtain raw materials for future use;

[0025] (2) Add 20mL of 25% hydrochloric acid solution to the preparation material obtained in step (1), stir at a speed of 200 rpm, keep stirring, the reaction temperature is 70°C, and the reaction time is 0.5h to obtain solution A, which is set aside;

[0026] (3) Add 4g of calcium aluminate powder into the solution A prepared in step (2), stir, the reaction temperature is 80°C, and measure the pH value of the solution, add alkali to control the pH value of the solution at 1, continue stirring, and the stirring speed is 200 rotation speed / min, carry out polymerization reacti...

Embodiment 2

[0029] A kind of preparation method of HCA-PAC composite water treatment agent of the present invention, comprises the following steps:

[0030] (1) Using the wet crushing method, take 15 parts of industrial aluminum-containing solid waste (material dryness 30%) produced by a processing factory in a certain place in Hunan, and crush them into fine blocks or powder to obtain raw materials for future use;

[0031] (2) Add 50mL of 25% hydrochloric acid solution to the prepared material obtained in step (1), stir at a speed of 1000 rpm, keep stirring, the reaction temperature is 80°C, and the reaction time is 3h to obtain solution A, which is set aside;

[0032] (3) Add 6g of calcium aluminate powder into the solution A prepared in step (2), stir, the reaction temperature is 90°C, and measure the pH value of the solution, add alkali to control the pH value of the solution at 4, continue stirring, and the stirring speed is 1000 rotation speed / min, carry out polymerization reaction,...

Embodiment 3

[0035] A kind of preparation method of HCA-PAC composite water treatment agent of the present invention, comprises the following steps:

[0036] (1) Using the wet crushing method, take 15 parts of industrial aluminum-containing solid waste (material dryness 30%) produced by a processing factory in a certain place in Hunan, and crush them into fine blocks or powder to obtain raw materials for future use;

[0037] (2) Add 80mL of 25% hydrochloric acid solution to the prepared material obtained in step (1), stir at a speed of 1500 rpm, keep stirring, the reaction temperature is 100°C, and the reaction time is 6h to obtain solution A, which is set aside;

[0038] (3) Add 8g of calcium aluminate powder into the solution A prepared in step (2), stir, the reaction temperature is 100°C, and measure the pH value of the solution, add alkali to control the pH value of the solution at 7, continue stirring, and the stirring speed is 1500 rotation speed / min, carry out polymerization reactio...

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Abstract

The invention discloses a preparation method of an HCA-PAC composite water treatment agent. The preparation method comprises the following steps: (1) crushing a raw material by using a wet crushing process to form a fine block or powder which is a prepared material for later use; (2) adding a hydrochloric acid solution to the prepared material, and performing continuous stirring to obtain a solution A for later use; (3) adding calcium aluminate powder to the prepared solution A, performing stirring, detecting the pH value of the obtained solution, adding an alkali to control the pH value of the solution to 1-7, and carrying out a polymerization reaction on the solution to prepare a solution B for later use; and (4) slowly dropwise adding a poly(dimethyldiallylammonium chloride) (HCA) to the prepared solution B, performing stirring, and carrying out a polymerization reaction to obtain the treatment agent. The preparation method of the invention has the advantages of scientific and reasonable property, simple process, remarkable decontamination treatment effect, low investment cost, and no introduction of other impurities, meets the requirements for sustainable development and reuseof resources, and brings great economic benefits for enterprises.

Description

technical field [0001] The invention belongs to the technical field of papermaking wastewater treatment agents, in particular to a preparation method of an HCA-PAC composite water treatment agent. Background technique [0002] In the pulp and paper industry, for wastewater flotation treatment, the traditional process is to add polyferric sulfate (PFS) and polyacrylamide (PAM) as flocculants to treat wastewater, but in the subsequent sludge drying process , it is necessary to add more polyaluminum chloride (PAC) for reaction, resulting in an increase in the cost of sludge treatment. At the same time, the sludge produced by adding polyferric sulfate (PFS) is sent to the thermoelectric co-firing process, and the sludge It will turn red and cannot be recycled as building materials. In addition, with the further requirements of sustainable development of resources and environmental protection of production, the traditional polymeric ferric sulfate (PFS) + polyacrylamide (PAM) is ...

Claims

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Application Information

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IPC IPC(8): C02F1/00C01F7/56C02F103/28
CPCC01F7/56C02F1/00C02F2103/28C02F2209/08
Inventor 张永泽王庆艺陈金心彭辉周毅
Owner YUEYANG FOREST & PAPER CO LTD