Water-soluble flocculant and preparation thereof

A flocculant and water-soluble technology, which is applied in the field of sewage treatment, can solve the problems of low suspended solids removal rate and cannot fully meet the needs of white clay sewage treatment, and achieve excellent suspended solids removal performance, low cost and simple process.

Inactive Publication Date: 2008-10-22
SINOPEC LANZHOU GASOLINEEUM CHEM IND CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, there are many types of flocculants used in China. The main VCG flocculants, PCA flocculants, HIHON-1 flocculants, PAM flocculants, etc. are commonly used in sewage treatment, but the removal rate of suspended solids of these flocculants is low. It cannot fully meet the needs of the white clay sewage treatment in the all white clay workshop of the catalyst plant

Method used

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  • Water-soluble flocculant and preparation thereof
  • Water-soluble flocculant and preparation thereof
  • Water-soluble flocculant and preparation thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Embodiment 1, by weight 55% sodium polyacrylate (molecular weight is 9.0 * 10 6 ) and 45% polyacrylamide (molecular weight 2.0×10 6 ) directly mixed uniformly by means of mechanical blending to obtain flocculant RS-20081(A) of the present invention. See Table 1 for the experiment of flocculant RS-20081(A) to remove suspended solids.

[0016] Table-1 Flocculant test

[0017]

[0018]

[0019] It can be seen from Table 1 that the flocculant RS-20081(A) has a high removal rate of suspended solids in the concentration range of 900-1200mg / L, and the removal rate of suspended solids is above 89.0%, which can meet the requirements of the catalyst. The sewage treatment needs of the plant, and the sewage discharge meets the standard.

Embodiment 2

[0020] Embodiment 2, the sodium polyacrylate (molecular weight is 10.0 * 10 6 ), 48% polyacrylamide (molecular weight 3.0×10 6 ) directly mixed uniformly by means of mechanical blending to obtain flocculant RS-20081(B) of the present invention. See Table 2 for the experiment of flocculant RS-20081(B) to remove suspended solids.

[0021] Table-2 Flocculant test

[0022]

[0023] It can be seen from Table 2 that the flocculant RS-20081(B) exhibited a high removal rate of suspended solids in the concentration range of 900-1200 mg / L, and the removal rates of suspended solids were above 89%, which can meet the requirements of the catalyst. The sewage treatment needs of the plant, and the sewage discharge meets the standard.

Embodiment 3

[0024] Embodiment 3, by weight 50% sodium polyacrylate (molecular weight is 11.0 * 10 6 ), 50% polyacrylamide (molecular weight 5.0×10 6 ) directly mixed uniformly by means of mechanical blending to obtain flocculant RS-20081(C) of the present invention. See Table 3 for the experiment of flocculant RS-20081(C) to remove suspended solids.

[0025] Table-3 Flocculant test

[0026]

[0027] It can be seen from Table 3 that the flocculant RS-20081(C) exhibits a high removal rate of suspended solids in the concentration range of 900-1200mg / L, and the removal rate of suspended solids is above 88.3%, which can meet the requirements of the catalyst. The sewage treatment needs of the plant, and the sewage discharge meets the standard.

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Abstract

The invention provides a flocculant used for terra alba sewage treatment in catalyst factory. The flocculant is obtained by the mechanical blending of sodium polyacrylate with the weight percentage of 50 percent to 55 percent and polyacrylamide with the weight percentage of 45 percent to 50 percent. The flocculant of the invention can remove suspended substances by over 90 percent during the treatment of sewage containing terra alba catalyst, which has better effect than the like products both at home and abroad (presently the other flocculant applied to the same device can only remove the suspended substances by about 70 percent); therefore, the flocculant of the invention can meet the requirements of the treatment of sewage containing terra alba catalyst, so as to meet the emission requirements.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment and relates to a water-soluble flocculant, in particular to a flocculant mainly composed of sodium polyacrylate and polyacrylamide, which is mainly used for the treatment of clay sewage. Background technique [0002] Water is closely related to human and industrial and agricultural production, and a large amount of industrial wastewater must be treated before it can be discharged. Among water treatment technologies and methods, most domestic manufacturers use flocculation and sedimentation. Flocculation is a complex physical and chemical process, which is a process in which colloids and suspended particles are bridged to form coarse flocs under the action of polymer flocculants. Under the action of polar substances or electrolytes, the tiny colloidal particles and suspended particles neutralize the surface charge of the particles, reduce or eliminate the repulsive force between the partic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/56
Inventor 任世科张军明张晖高维娜胡足高磊黄江伟刘蕊李宝生陈勇陈德昌
Owner SINOPEC LANZHOU GASOLINEEUM CHEM IND CORP
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