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Fast flocculating agent and its preparation method

A flocculant, rapid technology, applied in the field of rapid flocculant and its preparation, can solve the problem of no iron or aluminum recycling, achieve low production cost, rapid flocculation and sedimentation, and reduce treatment costs

Inactive Publication Date: 2014-01-01
武钢集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the publication number is that CN101348318A Chinese invention patent reports a kind of sludge dewatering composite flocculant, and the publication number is CN101367597A Chinese invention patent reports another kind of flocculant and sludge dehydration method for sludge dewatering, these flocculants The patent is mainly to extract and process polyaluminum sulfate or polyferric sulfate through industrial by-products. The fundamental principle is to prepare adsorbents from raw materials through various chemical reactions, but there is no fundamental solution to how to make iron in the process of flocculant utilization. element or aluminum is recycled

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] 1) Place the mixed sedimentation tank sludge and blast furnace slag powder at 600°C for 3 hours;

[0025] 2) Finely grind the mixed sedimentation tank sludge and blast furnace slag powder baked in step 1) into 200-mesh fine powder, and take 75% mixed sedimentation tank sludge and 12% blast furnace slag powder by weight percentage for later use;

[0026] 3) Mix 10% ammonium aluminum sulfate, 2% polyferric sulfate and 1% additive by weight percentage, wherein the additive is a mixture of semi-coke powder and silicon dioxide in a weight ratio of 1:1, semi-coke powder and two The particle size of silicon oxide is 100nm;

[0027] 4) Stir the mixture obtained in step 3) at 200r / min for 5min to obtain a uniformly stirred mixture;

[0028] 5) Then add the mixed sedimentation tank sludge and blast furnace slag powder obtained in step 2) to the mixture obtained in step 4), and then continue to stir at 80r / min for 60min to obtain a fast flocculant.

[0029] The prepared fast flo...

Embodiment 2

[0031] 1) Place the mixed sedimentation tank sludge and blast furnace slag powder at 700°C for 2 hours;

[0032] 2) Finely grind the mixed sedimentation tank sludge and blast furnace slag powder baked in step 1) into a 300-mesh fine powder, and take 80% mixed sedimentation tank sludge and 5% blast furnace slag powder according to the weight percentage for later use;

[0033] 3) Mix 2% ammonium aluminum sulfate, 10% polyferric sulfate and 2% additives by weight percentage, wherein the additive is a mixture of semi-coke powder and silicon dioxide in a weight ratio of 1:3, semi-coke powder and disulfide The particle size of silicon oxide is 20nm;

[0034] 4) Stir the mixture obtained in step 3) at 80r / min for 10min to obtain a uniformly stirred mixture;

[0035] 5) Then add the mixed sedimentation tank sludge and blast furnace slag powder obtained in step 2) to the mixture obtained in step 4), and then continue to stir at 200r / min for 30min to obtain a fast flocculant.

[0036]...

Embodiment 3

[0038] 1) Bake the mixed sedimentation tank sludge and blast furnace slag powder at 650°C for 3 hours;

[0039] 2) Finely grind the mixed sedimentation tank sludge and blast furnace slag powder baked in step 1) into a 250-mesh fine powder, and take 75% mixed sedimentation tank sludge and 9% blast furnace slag powder by weight percentage for later use;

[0040] 3) Mix 7% ammonium aluminum sulfate, 8% polyferric sulfate and 1% additive by weight percentage, wherein the additive is a mixture of semi-coke powder and silicon dioxide in a weight ratio of 1:2, semi-coke powder and two The particle size of silicon oxide is 50nm and 80nm respectively;

[0041] 4) Stir the mixture obtained in step 3) at 100r / min for 8min to obtain a uniformly stirred mixture;

[0042] 5) Add the mixed sedimentation tank sludge and blast furnace slag powder obtained in step 2) to the mixture obtained in step 4), and then continue to stir at 100r / min for 40min to obtain a fast flocculant.

[0043] The p...

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Abstract

The invention discloses a fast flocculating agent and its preparation method. The flocculating agent comprises the following chemical components by weight: 75-85% of mixed sedimentation tank sludge, 5-15% of blast furnace slag powder, 2-10% of aluminium ammonium sulfate, 2-10% of polymeric ferric sulfate and 1-2% of an additive. According to the preparation method of the invention, the aluminium ammonium sulfate, the polymeric ferric sulfate, the mixed sedimentation tank sludge, and the blast furnace slag powder are successively stirred in proportion under the condition of 80-200r / min so as to obtain the fast flocculating agent. The flocculating agent of the invention is composed of the mixed sedimentation tank sludge and the blast furnace slag powder, the surface of which has great activity and can speed up flocculation, thus reaching the purpose of fast flocculation and realizing resource utilization and high value-added utilization of solid waste.

Description

technical field [0001] The invention belongs to the field of waste water treatment, and specifically refers to a fast flocculant and a preparation method thereof. Background technique [0002] The current industrial water treatment flocculants include various types such as inorganic flocculants and organic flocculants. The main principle is to gather impurities such as colloidal substances and suspended solids in wastewater through chemical reagents with flocculation characteristics, so as to achieve static water quality. role. Its high cost and long flocculation time are the bottlenecks affecting the use of flocculants in wastewater treatment. At the same time, the sludge in the waste water treatment mixed sedimentation tank has no way of resource utilization, and has been landfilled as waste. Therefore, making waste water flocculants using the sludge of mixed sedimentation tanks will solve the above two problems well. [0003] At present, the publication number is CN101...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/52
Inventor 刘尚超薛改凤段爱民张垒王丽娜吴亮军刘璞张楠付本全
Owner 武钢集团有限公司
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