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Flocculating agent and preparation method thereof

A flocculant, mass percentage technology, applied in the field of water treatment, can solve problems such as narrow pH range, small flocs, turbid water, etc., achieve simple production equipment, fast settling speed, and improve the environment

Active Publication Date: 2013-05-22
杭锦旗亿嘉环境治理有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional flocculants have disadvantages such as narrow range of pH value, excessive addition makes water turbid, and produces small flocs, etc.

Method used

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  • Flocculating agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Embodiment 1: The raw material and weight percent of the flocculant of the present embodiment are as follows:

[0027] Fly ash 45%;

[0028] VCM mixed acid (in the process of producing polyvinyl chloride, black waste acid is obtained after drying acetylene and hydrogen chloride gas with concentrated sulfuric acid. Among them, the mass percentage concentration of sulfuric acid is 80-93%, and the mass percentage concentration of hydrochloric acid is 0.5%-2%) 11.5 %;

[0029] Water 43.5%.

[0030] The production technique of flocculant of the present invention, concrete steps are as follows:

[0031] (1) Crushed fly ash

[0032] Take a certain amount of fly ash and pulverize it in a pulverizer, and the powder particles can pass through a 20-mesh sieve.

[0033] (2) Mixed ingredients

[0034] According to the percentage content of each component, weigh the fly ash powder, VCM mixed acid, and water for mixing and stirring. At this time, the pH value of the material is i...

Embodiment 2

[0043] Embodiment 2: The main raw material and weight percentage of the flocculant of the present embodiment are as follows:

[0044] Fly ash 51%;

[0045] VCM mixed acid (the mass percentage concentration of sulfuric acid is 80-93%, the mass percentage concentration of hydrochloric acid is 0.5%-2%) 12%;

[0046] Water 37%.

[0047] The production method of the flocculant of the present embodiment, concrete steps are as follows:

[0048] (1) Crushed fly ash

[0049] Take a certain amount of fly ash and pulverize it in a pulverizer, and the powder particles can pass through a 20-mesh sieve.

[0050] (2) Mixed ingredients

[0051] According to the percentage content of each component, weigh the fly ash powder, VCM mixed acid, and water for mixing and stirring. At this time, the pH value of the material is in the range of 4-7.

[0052] (3) carry out chemical reaction

[0053] Under normal temperature and pressure, the alumina and iron oxide in the fly ash are fully reacted ...

Embodiment 3

[0060] Embodiment 3: The main raw material and weight percentage of the flocculant of the present embodiment are as follows:

[0061] Fly ash 60%;

[0062] VCM mixed acid (the mass percentage concentration of sulfuric acid is 80-93%, the mass percentage concentration of hydrochloric acid is 0.5%-2%) 18%;

[0063] Water 22%.

[0064] The production technology of the flocculant of the present embodiment, concrete steps are as follows:

[0065] (1) Crushed fly ash

[0066] Take a certain amount of fly ash and pulverize it in a pulverizer, and the powder particles can pass through a 20-mesh sieve.

[0067] (2) Mixed ingredients

[0068] According to the percentage content of each component, weigh the fly ash powder, VCM mixed acid, and water for mixing and stirring. At this time, the pH value of the material is in the range of 4-7.

[0069] (3) carry out chemical reaction

[0070] Under normal temperature and pressure, the alumina and iron oxide in the fly ash are fully reac...

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Abstract

The invention discloses a flocculating agent, containing the following components, by weight: 35-45% of pearl alum, 3-9% of ferric sulfate, 0.3-2% of iron chloride and 0.5-3% of aluminium chloride. The flocculating agent of the present invention has a better effect than a single inorganic flocculating agent and solves environment pollution caused by fly ash and VCM mixed acid. The method of the invention uses waste residue and waste liquid as raw materials of the flocculating agent, has simple technology and operations, generates no ''three wastes (waste gas, waste water and industrial residue)'' in a production process and belongs to a cleaning production technology.

Description

technical field [0001] The invention belongs to the field of water treatment, in particular to a flocculant for urban and rural sewage treatment and a preparation method thereof. Background technique [0002] With the increasingly serious water pollution in our country, sewage purification has become a major problem facing our country, which has attracted great attention from governments at all levels. Among them, flocculants play an important role in wastewater treatment. The composition of domestic sewage is complex, and the use of a single inorganic polymer flocculant cannot remove all the toxic and harmful ions in the sewage at the same time, and it is often necessary to use multiple flocculants. [0003] At present, with the rapid development of industry, the task of wastewater treatment is becoming more and more complex, and the shortage of a single flocculant is becoming more and more prominent. Therefore, high-efficiency composite flocculants will become a hot spot ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/52
Inventor 郭娟丽吕滨
Owner 杭锦旗亿嘉环境治理有限公司