Preparation method of polymeric aluminum ferric sulfate flocculating agent (liquid)

A technology for polymerizing aluminum ferric sulfate and aluminum sulfate, which is applied in the field of water treatment, can solve the problems of inconvenience in the production process, bubble generation, and increased cost, and achieves the effects of low production cost, fast speed, and easy control.

Inactive Publication Date: 2012-06-27
CHONGQING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The method is pure aluminum sulfate, and the oxidant used is sodium chlorate, which increases the cost of the product, and uses sodium carbonate as the alkalini...

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Control the reaction temperature to 80°C

[0029] (1) Put 55g of ferrous sulfate heptahydrate, an industrial by-product of titanium dioxide (accounting for 72.70% of industrial raw materials), in a beaker, add about 10mL of water and stir evenly, then add 4ml of concentrated sulfuric acid (accounting for 9.73% of industrial raw materials) for acidification, Then weigh 6g of industrial aluminum sulfate (accounting for 7.93% of industrial raw materials), introduce a certain amount of distilled water, and stir evenly at a slow speed.

[0030] (2) Heat the above liquid in a water bath at 80°C, add 4ml of concentrated nitric acid (accounting for 7.41% of industrial raw materials) dropwise while heating and stirring for oxidation, and stir at a slow speed for about 60 minutes; Introduce 1ml phosphoric acid (accounting for 2.23% of industrial raw materials) as a stabilizer in the process, phosphoric acid can provide PO 4 3- The ions increase the molecular weight to achie...

Embodiment 2

[0039] Control the reaction temperature to 70°C

[0040] (1) Put 55g of ferrous sulfate heptahydrate, an industrial by-product of titanium dioxide (accounting for 72.42% of industrial raw materials), in a beaker, add about 10mL of water and stir evenly, then add 4ml of concentrated sulfuric acid (accounting for 9.69% of industrial raw materials) for acidification, Then weigh 7g of industrial aluminum sulfate (accounting for 9.22% of industrial raw materials), introduce a certain amount of distilled water, and stir evenly at a slow speed.

[0041] (2) Heat the above liquid in a water bath at a temperature of 70°C, add 3.5ml of concentrated nitric acid (accounting for 6.45% of industrial raw materials) dropwise while heating and stirring for oxidation, and stir at a slow speed for about 60 minutes; 1ml phosphoric acid (accounting for 2.22% of industrial raw materials) is introduced as a stabilizer during the reaction, and phosphoric acid can provide PO 4 3- The ions increa...

Embodiment 3

[0049] Example 3 Controlling the reaction temperature to 80°C

[0050] (1) Put 55g of ferrous sulfate heptahydrate (accounting for 68.55% of industrial raw materials) by-product of titanium dioxide industry into a beaker, add about 10mL of water and stir evenly, then drop 4.5ml of concentrated sulfuric acid (accounting for 10.32% of industrial raw materials) for acidification , and then weigh 7g of industrial aluminum sulfate (accounting for 8.72% of industrial raw materials), introduce a certain amount of distilled water, and stir evenly at a slow speed.

[0051] (2) Heat the above liquid in a water bath at 80°C, add 3.5ml of concentrated nitric acid (accounting for 6.11% of industrial raw materials) dropwise while heating and stirring for oxidation, and stir at a slow speed for about 45 minutes; During the reaction process, 3ml phosphoric acid (accounting for 6.30% of industrial raw materials) was introduced as a stabilizer. Phosphoric acid can provide PO43- ions to increa...

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PUM

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Abstract

The invention discloses a preparation method of polymeric aluminum ferric sulfate. The preparation method comprises the following steps of: with ferrous sulfate heptahydrate as industrial waste of titanium white as a main raw material, adding water to dissolve and adding concentrated sulfuric acid to acidize; then adding industrial aluminum sulfate to heat and stir under the condition that the bath temperature is 60-100 DEG C; stirring and adding concentrated nitric acid to oxidate; and carrying out polymerization for 30-60 min to obtain the polymeric aluminum ferric sulfate. The preparation method has the advantages of simple process, low cost and short reaction period. The flocculation performance of the polymeric aluminum ferric sulfate is better than that of the traditional industrial product and can be widely applied to feed water treatment and sewage treatment.

Description

technical field [0001] The invention relates to the technical field of water treatment, in particular to a preparation method of a polymerized ferric aluminum sulfate flocculant. Background technique [0002] In the past ten years, the research and development of inorganic polymer coagulant (IPC) has received extensive attention from domestic and foreign water treatment circles. Although polyaluminum and polyiron developed in the early stage have their own advantages, as the requirements for water quality become more and more The shortcomings of the application of polyiron and polyaluminum in wastewater treatment have emerged. After polyaluminum chloride treatment, the residual aluminum concentration in the water sample is high, the hydrolysis of polyaluminum sulfate is weak, the flocculation volume is small, loose, and the sedimentation is slow. Polyferric chloride has poor stability and large residual chroma. Therefore, it is necessary to develop a polymer with fast settl...

Claims

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Application Information

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IPC IPC(8): C02F1/52
Inventor 郑怀礼冯力蒋贞贞董玉娇郑晓楷关庆庆马江雅
Owner CHONGQING UNIV
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