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Flocculant and preparation method thereof

A flocculant and calcium hydroxide technology, applied in the field of water treatment, can solve the problems of powerless acid sewage, small flocs, turbid water, etc., and achieve the effect of large flocs, strong affinity and fast sedimentation speed

Active Publication Date: 2012-06-13
ELION ECOLOGICAL RESTORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional flocculants have the disadvantages of being powerless to acidic sewage, adding too much to make the water turbid, and producing small flocs, etc.

Method used

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  • Flocculant and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The components and weight percentages of the flocculant in this embodiment are as follows:

[0024] Calcium hydroxide 75%;

[0025] Iron sulfate 15%;

[0026] Aluminum sulfate 5%;

[0027] Other components (other impurities in carbide slag, which do not contribute to flocculation) 5%.

[0028] Its production process, concrete steps are as follows:

[0029] (1) Crushed carbide slag

[0030] Take a certain amount of carbide slag and crush it in a crusher.

[0031] (2) Mixed ingredients

[0032] According to the percentage content of each component, a certain amount of carbide slag, ferric sulfate and aluminum sulfate is weighed and mixed and stirred.

Embodiment 2

[0034] The components and weight percentages of the flocculant in this embodiment are as follows:

[0035] Calcium hydroxide 90%;

[0036] Iron sulfate 1%;

[0037] Aluminum sulfate 3%;

[0038] Other components (other impurities in carbide slag, which do not contribute to flocculation) 6%.

[0039] The production process of flocculant, the specific steps are as follows:

[0040] (1) Crushed carbide slag

[0041] Take a certain amount of carbide slag and crush it in a crusher.

[0042] (2) Mixed ingredients

[0043] According to the percentage content of each component, a certain amount of carbide slag, ferric sulfate and aluminum sulfate is weighed and mixed and stirred.

Embodiment 3

[0045] The components and weight percentages of the flocculant in this embodiment are as follows:

[0046] Calcium hydroxide 80%;

[0047] Iron sulfate 0.8%;

[0048] Aluminum sulfate 14%;

[0049] Other components (other impurities in carbide slag, which do not contribute to flocculation) 5.2 %.

[0050] The production process of flocculant, the specific steps are as follows:

[0051] (1) Crushed carbide slag

[0052] Take a certain amount of carbide slag and crush it in a crusher.

[0053] (2) Mixed ingredients

[0054] According to the percentage content of each component, a certain amount of carbide slag, ferric sulfate and aluminum sulfate is weighed and mixed and stirred.

[0055] The flocculants described in Examples 1 to 3 are used in sewage treatment. The flocculation principle of the flocculants: the coagulation of carbide slag to sludge does not supply OH - , but provides a large amount of Ca 2+ , Ca 2+ By compressing the electric double layer, the stabilit...

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Abstract

The invention discloses a flocculant. The flocculant comprises, by weight, 75-90% of calcium hydrate, 0.8-15% of iron sulfate, and 5-14.2% of aluminum sulfate. The flocculant of the invention, which can effectively remove turbidities and harm substances of metallic ions and the like, has the advantages of nontoxicity, harmlessness, no secondary pollution, fast flocculation, low price, and use convenience.

Description

technical field [0001] The invention belongs to the field of water treatment, in particular to a flocculant used for urban sewage treatment and industrial wastewater treatment and a preparation method thereof. Background technique [0002] my country's water pollution and water crisis are becoming increasingly serious. Water supply shortage and sewage purification have become one of the main problems facing our country. With the enhancement of people's awareness of environmental protection and the implementation of my country's sustainable development strategy, the work of preventing pollution and protecting the environment has attracted great attention from governments at all levels. The requirements for industrial water treatment and environmental protection have been continuously improved. keep improving. The flocculation of flocculants plays an important role in wastewater treatment. [0003] At present, with the rapid development of industry, the task of wastewater tr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/52
Inventor 郭娟丽吕滨
Owner ELION ECOLOGICAL RESTORATION
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