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Composite polyacrylamide flocculant and application thereof

A polyacrylamide and flocculant technology, which is applied in the direction of flocculation/sedimentation water/sewage treatment, mining wastewater treatment, etc., can solve the problem of low solid content in the sedimentation part, poor flocculation effect, inability to effectively perform double layer compression and charge neutralization Function and other issues, to achieve the effect of enhancing the flocculation effect

Pending Publication Date: 2021-02-02
上海泽戌化学科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For the liquid-solid separation treatment of sewage with high solid content, a single organic polyacrylamide flocculant is used, because the electric double layer compression and charge neutralization cannot be effectively performed, the flocculation effect is poor, and the solid content of the precipitated part after separation Low, not conducive to the treatment of subsequent processes

Method used

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  • Composite polyacrylamide flocculant and application thereof
  • Composite polyacrylamide flocculant and application thereof
  • Composite polyacrylamide flocculant and application thereof

Examples

Experimental program
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Embodiment 1

[0020] A composite polyacrylamide flocculant, composed of 80 parts of anionic polyacrylamide, 10 parts of nonionic polyacrylamide, 9 parts of magnesium sulfate crystals and 1 part of calcium chloride particles; specifically, the anionic polyacrylamide Put 80 parts of crystalline powder, 10 parts of nonionic polyacrylamide, 9 parts of magnesium sulfate crystals and 1 part of calcium chloride granules into a blender, stir and mix at room temperature for 50 minutes, and then pack for use.

Embodiment 2

[0022] A composite polyacrylamide flocculant, composed of 40 parts of anionic polyacrylamide, 40 parts of nonionic polyacrylamide, 9 parts of magnesium chloride crystals and 1 part of zinc chloride particles; specifically, 40 parts of anionic polyacrylamide 40 parts, 40 parts of nonionic polyacrylamide, 9 parts of magnesium chloride crystals and 1 part of zinc chloride particles were put into a blender, stirred and mixed at room temperature for 50 minutes, and then packaged for use.

Embodiment 3

[0024] A composite polyacrylamide flocculant, which is compounded by 80 parts of anionic polyacrylamide, 20 parts of magnesium sulfate crystals and 10 parts of ammonium sulfate; the specific steps are as follows: Specifically, 80 parts of anionic polyacrylamide and magnesium sulfate crystals 20 parts and 10 parts of ammonium sulfate were put into a blender, stirred and mixed at room temperature for 50 minutes, and then packaged for use.

[0025] According to the raw material composition of the composite polyacrylamide flocculant in Examples 1 to 3, see Table 1.

[0026] Table 1 Raw material composition of composite polyacrylamide flocculant

[0027]

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Abstract

The invention provides a composite polyacrylamide flocculating agent and application thereof. The composite polyacrylamide flocculating agent is prepared by compounding polyacrylamide with the molecular weight of more than 8,000,000 and crystal powdery calcium / magnesium / zinc / ammonium salt, wherein the polyacrylamide is anionic polyacrylamide or / and nonionic polyacrylamide; the water-soluble calcium / magnesium / zinc / ammonium salt adopts one or more of calcium chloride particles, magnesium sulfate crystals, zinc chloride crystals and ammonium sulfate particles. The composite polyacrylamide flocculating agent is applied to (1) oil extraction wastewater; (2) tailing wastewater; (3)MFT; and (4) FFT and has the remarkable effect. The bridging adsorption effect of high-molecular polyacrylamide andthe effective compression double-electric-layer effect of water-soluble calcium / magnesium / zinc / ammonium salt are combined, a small amount of calcium / magnesium / zinc salt can be utilized to increase thetorsion resistance of polyacrylamide in the solution, the flocculation effect is enhanced, and the strong cross-linking effect of high-molecular polyacrylamide and inorganic salt can be avoided.

Description

technical field [0001] The invention belongs to the technical field of flocculants, and in particular relates to a compound polyacrylamide flocculant formula and its application. Background technique [0002] Flocculant precipitation is currently a relatively common method of treating industrial wastewater. By adding flocculants to wastewater, suspended solids and soluble chemical oxygen consumption (COD) and biological oxygen consumption (BOD) can be effectively removed to achieve purification. purpose of sewage. At present, polymer flocculants are mainly divided into inorganic polymer flocculants, such as polyiron, polyaluminum, etc.; natural polymer flocculants, such as chitin, modified starch, etc.; synthetic polymer flocculants, such as polyacrylamide, etc. [0003] Polyacrylamide (PAM) is a commonly used flocculant in the water treatment industry. It is a general term for acrylamide (Acrylamide, AM) homopolymer or linear polymer copolymerized with other monomers, incl...

Claims

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Application Information

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IPC IPC(8): C02F1/56C02F103/10
CPCC02F1/56C02F2103/10
Inventor 冯学伟
Owner 上海泽戌化学科技有限公司
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