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Composite flocculating agent and preparation method thereof

A technology of composite flocculant and sulfuric acid method, which is applied in the direction of flocculation/sedimentation water/sewage treatment, etc., can solve the problems of increasing the operating cost of titanium dioxide production enterprises, loss, and high cost of titanium dioxide waste acid, so as to increase added value and decontamination Strong ability, good for environmental protection

Inactive Publication Date: 2013-04-10
YULIN NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the high cost of processing titanium dioxide waste acid, the operating cost of titanium dioxide production enterprises has been increased; Ferrous sulfate heptahydrate is used as a water purifier, fertilizer and feed additive, most of which are treated as waste by manufacturers or piled up for a long time, allowing it to be lost

Method used

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  • Composite flocculating agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] (1) Cut 2.0g of waste nylon socks into small pieces and add to 120mL of titanium dioxide waste acid, stir and boil for 15 minutes to dissolve;

[0026] (2) Add 200mL of water, 40g of ferrous sulfate heptahydrate, 15g of potassium chlorate, 0.6g of fly ash and 5g of pre-alkalized starch to the mixture in step (1);

[0027] (3) Stir and react the mixed solution in step (2) in a constant temperature magnetic stirrer. During the reaction, the pH of the reaction solution is controlled at 1-1.5, the reaction temperature is 60°C, and the reaction time is 2.0h;

[0028] (4) The solid-liquid separation of the reaction solution in step (3) yielded about 260mL of liquid composite flocculant, and the product was stored for 3 months without gelling.

Embodiment 2

[0030] (1) Cut 1.0g of waste nylon socks into small pieces and add to 120mL of titanium dioxide waste acid, stir and boil for 12 minutes to dissolve;

[0031] (2) Add 200mL of water, 60g of ferrous sulfate heptahydrate, 15g of potassium chlorate, 0.6g of fly ash and 5g of pre-alkalized starch to the mixture in step (1);

[0032] (3) Stir and react the mixed solution in step (2) in a constant temperature magnetic stirrer. During the reaction, the pH of the reaction solution is controlled at 1-1.5, the reaction temperature is 60°C, and the reaction time is 2.0h;

[0033] (4) The solid-liquid separation of the reaction solution in step (3) yielded about 270mL of liquid composite flocculant, and the product was stored for 3 months without gelling.

Embodiment 3

[0035] (1) Cut 1.5g of waste nylon socks into small pieces and add to 120mL of titanium dioxide waste acid, stir and boil for 15 minutes to dissolve;

[0036] (2) Add 200mL of water, 80g of ferrous sulfate heptahydrate, 15g of potassium chlorate, 0.6g of fly ash and 5g of pre-alkalized starch to the mixture in step (1);

[0037] (3) Stir and react the mixed solution in step (2) in a constant temperature magnetic stirrer. During the reaction, the pH of the reaction solution is controlled at 1-1.5, the reaction temperature is 60°C, and the reaction time is 1.0h;

[0038] (4) The solid-liquid separation of the reaction solution in step (3) yielded about 260mL of liquid composite flocculant, and the product was stored for 3 months without gelling.

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Abstract

The invention discloses a composite flocculating agent and a preparation method thereof. With titanium white waste acid and ferrous sulfate, waste nylon and starch as raw materials, an efficient composite flocculating agent with less charging quantity, high coagulation speed, strong decontamination capability and wide application range is obtained by using a simple one-pot process. According to the invention, wastes are controlled by wastes, wastes are turned into wealth, the environment is improved, a new way is built for recycling and hazard-free treatment of industrial wastes and the composite flocculating agent and the preparation method thereof are beneficial for environmental protection. Through the adoption of the composite flocculating agent and the preparation method thereof, the titanium white waste acid and side product ferrous sulfate can be sufficiently utilized, an environment pollution problem is solved, the added value of the titanium white powder industry can be also effectively increased, the production cost of the flocculating agent and sewage treatment cost are reduced, and very strong economic benefits, environment friendly benefits and social benefits are obtained.

Description

technical field [0001] The invention belongs to the technical field of waste acid treatment and water treatment agent preparation, and relates to a composite flocculant and a preparation method thereof, in particular to a high-efficiency composite flocculant prepared by using sulfuric acid titanium dioxide waste acid and its by-product ferrous sulfate. Background technique [0002] With the enhancement of people's awareness of environmental protection, the standard treatment of industrial wastewater and urban sewage has become a top priority. According to the survey, the amount of industrial wastewater treated is less than 20% of the total amount, and urban sewage is only treated experimentally in a few cities for the time being, mainly because of the high cost of treatment. Therefore, it is urgent to develop efficient and cheap wastewater treatment agents. Flocculant is the most important water treatment agent, and its consumption is huge, increasing by a high percentage e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/52C02F1/56
Inventor 谢祖芳朱万仁庞起晏全陈渊周振
Owner YULIN NORMAL UNIVERSITY
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