Preparation method of multifunctional composite magnetic seed and application of multifunctional composite magnetic seed to water treatment magnetic flocculation process

A multi-functional, magnetic seed technology, applied in water/sewage treatment, water treatment parameter control, water/sewage multi-stage treatment, etc., can solve the problems of poor removal effect, long precipitation period, difficult recycling, etc., to achieve good removal The effect, the effect of high reuse rate

Inactive Publication Date: 2018-10-09
武汉霖泉环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the commonly used synthetic Fe in the existing magnetic flocculation technology 3 o 4 Or natural iron ore powder magnetic species on soluble COD Cr The removal effect is poor, the precipitatio

Method used

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  • Preparation method of multifunctional composite magnetic seed and application of multifunctional composite magnetic seed to water treatment magnetic flocculation process

Examples

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Example Embodiment

[0026] Example 1

[0027] The synthesis of a multifunctional composite magnetic seed. The preparation process is as follows: ① Fully dissolve ferric chloride and ferrous sulfate in water, and the ratio of ferric chloride to ferrous sulfate is 2:1, iron The weight ratio of salt to water is 3:2; ②Add a certain amount of activated carbon powder to the above solution and stir it evenly. The weight ratio of iron salt to activated carbon powder is 1.8:1; ③Fully dissolve polyvinyl alcohol in water, The concentration is 5%. Take out an appropriate amount of polyvinyl alcohol solution and pour it into ①, stir evenly, where the weight ratio of the polyvinyl alcohol solution to the activated carbon powder is 2.4:1; ④ fully dissolve the sodium hydroxide in water, where the weight ratio of sodium hydroxide to water is 1:1; ⑤Add a certain amount of iron ore powder to ④, in which the weight ratio of iron ore powder to iron salt is 1.3:1; ⑥The solution in ④ is heated to above 50℃, and the solut...

Example Embodiment

[0030] Example 2

[0031] The synthesis of a multi-functional composite magnetic seed. The preparation process is as follows: ① Fully dissolve the trivalent iron salt and the divalent iron salt in water, and the amount ratio of the trivalent iron salt to the divalent iron salt is 1:1 , The weight ratio of iron salt to water is 1:3; ②Add a certain amount of activated carbon to the above solution and stir evenly, where the weight ratio of iron salt to activated carbon is 1:3; ③Fully dissolve polyvinyl alcohol in water, The concentration is 5%. Take out an appropriate amount of polyvinyl alcohol solution and pour it into ①, stir evenly, wherein the weight ratio of polyvinyl alcohol solution to activated carbon powder is 1:1; ④ fully dissolve sodium hydroxide in water, where the weight ratio of sodium hydroxide to water is 1~1; ⑤Add a certain amount of iron ore powder to ④, in which the weight ratio of iron ore powder to iron salt is 1:3; ⑥The temperature of the solution in ④ is rai...

Example Embodiment

[0034] Example 3

[0035] The synthesis of a multi-functional composite magnetic seed. The preparation process is as follows: ① Fully dissolve the trivalent iron salt and the divalent iron salt in water, and the amount ratio of the trivalent iron salt to the divalent iron salt is 2:1 , The weight ratio of iron salt to water is 3:2; ②Add a certain amount of activated carbon to the above solution and stir it evenly. The weight ratio of iron salt to activated carbon is 3:1; ③Fully dissolve polyvinyl alcohol in water, The concentration is 10%. Take out an appropriate amount of polyvinyl alcohol solution and pour it into ①, stir evenly, wherein the weight ratio of polyvinyl alcohol solution to activated carbon powder is 9:1; ④ fully dissolve sodium hydroxide in water, where the weight ratio of sodium hydroxide to water is 1:3; ⑤Add a certain amount of iron ore powder to ④, in which the weight ratio of iron ore powder to iron salt is 3:1; ⑥The solution in ④ is heated to above 50℃, and...

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Abstract

The invention relates to a preparation method of a multifunctional composite magnetic seed and an application of the multifunctional composite magnetic seed to a water treatment magnetic flocculationprocess, and belongs to the technical field of water treatment. Ferric iron salt, ferrous iron salt, activated carbon, polyvinyl alcohol, iron ore powder and sodium hydroxide serve as main raw materials, and the multifunctional composite magnetic seed is prepared by a co-precipitation method and applied to sewage and wastewater treatment. The multifunctional composite magnetic seed prepared by themethod is high in yield, simple to operate, low in cost, free from secondary pollution and high in reusability and has good removing effects on CODCr (chemical oxygen demand chromium), SS (suspendedmatters), TP (total protein), heavy metal ions and the like in wastewater.

Description

technical field [0001] The invention relates to a preparation method of a multifunctional composite magnetic seed and its application in the magnetic flocculation process of water treatment, belonging to the technical field of water treatment. Background technique [0002] Magnetic technology has developed rapidly since it was explored by experts and scholars at home and abroad in the 1970s and 1980s. It has achieved good results in the treatment of phenolic wastewater, heavy metal wastewater, dye wastewater, and radioactive wastewater, including magnetic separation and magnetic flocculation. , magnetic biology and other technical branches have formed a relatively complete theoretical system of process technology and magnetic technology. [0003] Magnetic separation technology refers to the selective separation of substances with different magnetic properties under the action of an external magnetic field force. It has the advantages of simple structure, small footprint, hig...

Claims

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Application Information

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IPC IPC(8): C02F9/12C02F101/20
CPCC02F1/283C02F1/488C02F1/5236C02F9/00C02F2001/007C02F2101/20C02F2209/08C02F2209/10C02F2209/18
Inventor 朱倩侯大军朱丽汪杰明黄琨李卓益
Owner 武汉霖泉环保科技有限公司
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