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Method for preparing natural flocculating agent used for purifying water

A flocculant and natural technology, applied in the field of flocculant preparation, can solve the problems of low cost performance and secondary pollution, and achieve the effect of high cost performance, no secondary pollution and easy degradation.

Inactive Publication Date: 2010-12-15
CHANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these flocculants need to go through a series of chemical synthesis such as copolymerization and other chemical reactions to obtain a flocculant with good application effect, low cost performance and secondary pollution

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] Peel 500g of yam, chop it, add yam to 10kg of water, stir at 10°C for 2 hours, add a small amount of sulfuric acid to adjust the pH to 4, let it stand for 1 hour, filter out the solid residue, and obtain a clear natural flocculant.

[0011] In the kaolin suspension with a volume of 500 mL and a concentration of 40 g / L, 5 mL of the obtained natural flocculant was added dropwise, stirred rapidly for 3 minutes, and stirred at a slow speed for 4 minutes. It was observed that alum flowers formed and became larger, and the kaolin was rapidly settled. It becomes clear, the turbidity is 5NTU, and the water purification effect is good.

Embodiment 2

[0013] Peel 500g of yam, chop it, add yam to 50kg of water, stir at 40°C for 3 hours, add a small amount of sulfuric acid to adjust the pH to 6, let it stand for 2 hours, filter out the solid residue, and obtain a clear natural flocculant.

[0014] In the kaolin suspension with a volume of 500mL and a concentration of 30g / L, 8mL of the obtained natural flocculant was added dropwise, stirred rapidly for 3 minutes, and stirred at a slow speed for 4 minutes. It was observed that alum flowers formed and became larger, and the kaolin was rapidly settled. It becomes clear, the turbidity is 7NTU, and the water purification effect is good.

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PUM

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Abstract

The invention discloses a method for preparing a natural flocculating agent used for purifying water. The method comprises the following steps of: peeling and chopping cinnamomvine; adding the cinnamomvine into water of which the weight is 20 to 100 times that of the cinnamomvine; stirring for 2 to 3 hours at the temperature of between 10 and 40 DEG C; adding a small amount of sulfuric acid into the water to regulate the pH value to be 4 to 6; standing for 1 to 2 hours; and filtering out solid residue to obtain solution, namely the natural flocculating agent. By directly using edible cinnamomvine as a raw material for preparing the water treatment flocculating agent, the natural flocculating agent has the advantages of simple preparation method, readily available and cheap raw material, high performance price ratio, no toxicity, easy degradation and no secondary pollution, and is a real environmental-friendly flocculating agent.

Description

technical field [0001] The invention relates to the technical field of sewage treatment in environmental protection, in particular to a preparation method of a flocculant used for drinking water purification. Background technique [0002] The definition of flocculant is: all substances used to precipitate flocs from solutes, colloids, or suspended particles in aqueous solutions are called flocculants. In an aqueous solution, the use of two or more substances is called a composite flocculant. For example, aluminum trichloride and polyacrylamide are used at the same time to treat a certain kind of wastewater, causing floc precipitation, so as to achieve the purpose of purifying wastewater, and aluminum trichloride and polypropyleneamide can be called composite flocculant. [0003] According to the composition of flocculant, it can be divided into inorganic flocculant and organic flocculant. According to their relative molecular weight, they can be divided into two categorie...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/56
Inventor 马建锋崔冰莹李定龙
Owner CHANGZHOU UNIV