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High-alkalization degree poly-ion polymerized composite coagulant and preparation method thereof

A technology of coagulant and alkalization, applied in the direction of separation methods, chemical instruments and methods, aluminum chloride, etc., can solve the problems of low content of heavy metal impurities, high product cost, restrictions, etc., to improve conversion rate and save energy , The effect of reducing maintenance costs

Inactive Publication Date: 2009-08-19
CHANGCHUN WATER GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The product not only has good appearance, low content of heavy metal impurities, but also has excellent flocculation effect, but the product cost is high. For the economically underdeveloped country, the application and promotion of its products in China will inevitably be restricted.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Weigh aluminum hydroxide: 1.366 tons; hydrochloric acid: 6.898 tons, heat up to 130°C, pressure 0.15MPa, and react for 2 hours. Add 5.09 tons of water to the reaction tank, add the above-mentioned feed liquid, the temperature should be between 70-90°C, add 2.40 tons of calcium powder for reaction, when the viscosity of the reaction feed liquid reaches 102-103mPa·S, some water can be added Dilute and continue to react. When the viscosity of the feed liquid reaches the initial viscosity again, add some water to dilute again, and repeat this for 2 to 3 times until the viscosity of the feed liquid reaches between 10mPa·S and 300mPa·S, and the viscosity of the feed liquid no longer continues Finally, add all the remaining 3.5 to 4.5 tons of water into the feed liquid at one time, and this process should be completed within 2 hours. A total of 5.8 tons of water was added during the reaction, and the temperature of the feed liquid after adding calcium powder should be kept bet...

Embodiment 2

[0021] Weigh aluminum hydroxide: 1.466 tons; hydrochloric acid: 6.40 tons, heat up to 150°C, pressure 0.20MPa, and react for 1.5 hours. Add 4.50 tons of water to the reaction tank, add the above-mentioned feed liquid, the temperature should be between 70-90°C, add 2.50 tons of calcium powder for reaction, when the viscosity of the reaction feed liquid reaches 102-103mPa·S, add some water Dilute and continue to react. When the viscosity of the feed liquid reaches the initial viscosity again, add some water to dilute again, and repeat this for 2 to 3 times until the viscosity of the feed liquid reaches between 10mPa·S and 300mPa·S, and the viscosity of the feed liquid no longer continues Finally, add all the remaining 4 to 5 tons of water into the feed liquid at one time, and this process should end within 1.5 hours. A total of 6.50 tons of water was added during the reaction, and the temperature of the feed liquid after adding calcium powder should be kept between 50 and 70°C. ...

Embodiment 3

[0023] Weigh aluminum hydroxide: 1.628 tons; hydrochloric acid: 6.4 tons, add 4.8 tons of water to the reaction tank, add the above-mentioned liquid, the temperature should be between 70 ~ 90 ° C, add 2.60 tons of calcium powder for reaction, when the reaction material When the viscosity of the liquid reaches 102-103mPa·S, add part of water to dilute and continue the reaction. When the viscosity of the material liquid reaches the initial viscosity again, add part of water to dilute again, and repeat this for 2-3 times until the viscosity of the material liquid reaches 10mPa·S Between ~300mPa·S, until the feed liquid is no longer viscous, finally add all the remaining 5-6 tons of water into the feed liquid at one time, and this process should end within 1.5 hours. A total of 7.0 tons of water was added during the reaction, and the temperature of the feed liquid after adding calcium powder should be kept between 50 and 70°C.

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Abstract

The invention provides a production process of high alkalization polymeric multi-ionic composite coagulant. Aluminum hydroxide and hydrochloric acid are put into the reaction kettle in proportion and reacted for 1-3 hours under the conditions of 100-200°C and 0.10-0.54MPa. Add water and calcium aluminate powder in proportion. When the reaction feed liquid becomes viscous, add water to dilute until it is no longer viscous, continue the reaction until the viscous reappears, add water again until the feed liquid is no longer viscous Until all the remaining water is added to the feed liquid at one time at last, the reaction is completed to obtain the present invention. Due to the control of temperature, viscosity and other indicators to achieve the best polymerization state, it has a special structural state, which not only has strong adsorption, electric neutralization, coagulation destabilization, and bonding bridging of high alkalization coagulants. , to avoid adjusting the pH value and other advantages, and compared with other coagulant products, it has the advantages of obviously improving the quality of the effluent and reducing the cost.

Description

technical field [0001] The invention provides a high alkalization degree polymerized multi-ion silicon-aluminum-calcium chloride composite coagulant and a preparation method thereof, belonging to the technical field of preparation of chemical reagents for flocculation water treatment. Background technique [0002] At present, most manufacturers usually use aluminum-containing raw materials, such as bauxite, calcium aluminate powder and other raw materials to react with acid products, and adjust the ratio of raw materials, reaction temperature, time or pressure to achieve the best reaction state of the product. In terms of the application effect of the product, due to the influence of the morphological structure, the unit consumption of the existing product is relatively high, which not only increases the cost of water treatment, but also affects some metal elements in the water, especially the content of heavy metal elements and residual aluminum content In the field of drin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D21/01C02F1/52C01F7/56
Inventor 历建萍姜万林马平程秀本杨天栋
Owner CHANGCHUN WATER GROUP
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