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Preparation method of binary composite water purifying agent

A compound, water purifying agent technology, applied in chemical instruments and methods, water/sewage treatment, water/sludge/sewage treatment, etc. problem, to achieve the effect of obvious effect, low turbidity of water sample and fast sedimentation

Inactive Publication Date: 2018-06-19
河南利源净化材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its advantages are large flocs, fast settling, and clear water quality after treatment, but there are also problems such as large investment in equipment, unstable dosage, narrow pH adaptability, and scouring of wool, paint, garbage permeate, etc. with turbidity >5000NTU. Defects such as poor treatment effect of wastewater containing both organic and inorganic substances

Method used

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  • Preparation method of binary composite water purifying agent
  • Preparation method of binary composite water purifying agent
  • Preparation method of binary composite water purifying agent

Examples

Experimental program
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Effect test

Embodiment 1

[0029] A preparation method of binary composite water purifying agent, comprising the following steps:

[0030] 1) Weigh aluminum hydroxide and hydrochloric acid, add in the reactor; The pure substance weight ratio of described aluminum hydroxide and hydrochloric acid is 100:145;

[0031] 2) Under stirring, control the reaction temperature to 135°C, the reaction pressure to 0.30MPa, keep warm for 180min, and react to form an aluminum chloride solution;

[0032] 3) under stirring, add calcium aluminate powder, water and polydimethyldiallyl ammonium chloride to the reactor; the calcium aluminate powder, water, polydimethyldiallylammonium chloride The weight ratio to aluminum hydroxide is 100:211:40:100;

[0033] 4) Under stirring, the reaction temperature is controlled at 100°C; the reaction pressure is 0.075MPa, and after 60 minutes of heat preservation, the slurry is settled for 48 hours, and then transferred to a drum dryer at a drying temperature of 170°C to obtain polyalum...

Embodiment 2

[0049] A preparation method of binary composite water purifying agent, comprising the following steps:

[0050] 1) Weigh aluminum hydroxide and hydrochloric acid, add in the reactor; The pure substance weight ratio of described aluminum hydroxide and hydrochloric acid is 100:155;

[0051] 2) Under stirring, control the reaction temperature to 130°C, the reaction pressure to 0.25MPa, keep warm for 170min, and react to form an aluminum chloride solution;

[0052] 3) under stirring, add calcium aluminate powder, water and polydimethyldiallyl ammonium chloride to the reactor; the calcium aluminate powder, water, polydimethyldiallylammonium chloride The weight ratio to aluminum hydroxide is 114:223:40:100;

[0053] 4) Under stirring, the reaction temperature is controlled at 90°C; the reaction pressure is 0.15MPa, and after 75 minutes of heat preservation, the slurry is settled for 48 hours, and then transferred to a drum dryer at a drying temperature of 180°C to obtain "polyalumi...

Embodiment 3

[0067] A preparation method of binary composite water purifying agent, comprising the following steps:

[0068] 1) Weigh aluminum hydroxide and hydrochloric acid, add in the reactor; The pure substance weight ratio of described aluminum hydroxide and hydrochloric acid is 100:148;

[0069] 2) Under stirring, control the reaction temperature to 145°C, the reaction pressure to 0.30MPa, and keep warm for 190min to generate aluminum chloride solution;

[0070]3) under stirring, add calcium aluminate powder, water and polydimethyldiallyl ammonium chloride to the reactor; the calcium aluminate powder, water, polydimethyldiallylammonium chloride The weight ratio to aluminum hydroxide is 108:211:40:100;

[0071] 4) Under stirring, the reaction temperature is controlled at 105°C; the reaction pressure is 0.15MPa, and after 60 minutes of heat preservation, the slurry is settled for 48 hours, and then transferred to a drum dryer at a drying temperature of 165°C to obtain "polyaluminum ch...

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Abstract

The invention discloses a preparation method of a binary composite water purifying agent. The preparation method comprises the following steps: weighing aluminum hydroxide and hydrochloric acid, adding the weighed substances into a reactor according to a pure substance weight ratio of 100:(140-160); reacting the added substances under stirring at a reaction temperature of 130-150 DEG C under a reaction pressure of 0.25-0.35 MPa for 160-190 min to generate an aluminum chloride solution; adding calcium aluminate powder, water and polydiallyldimethylammonium chloride into the reactor according toa weight ratio of the three components to the aluminum hydroxide of (80-120):(180-230):(30-50):100; 4), performing a reaction on the obtained mixture under stirring at a reaction temperature of 90-110 DEG C under a reaction pressure of 0.05-0.15 MPa for 55-75 min, settling the obtained slurry, and performing drying at 160-180 DEG C in order to obtain a polyaluminum chloride-polydiallyldimethylammonium chloride composite flocculant; and stirring and uniformly mixing the composite flocculant and anionic polyacrylamide in a spiral cone mixer according to a weight ratio of 100:(50-70) for 40-80 min to obtain the binary composite water purifying agent. The binary composite water purifying agent prepared by the preparation method has the advantages of large size and fast settlement of generatedprecipitate floccules, low turbidity of a water sample, and good effect.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment by using a water purifying agent, and in particular relates to a preparation method of a binary compound water purifying agent. Background technique [0002] With the development of the water treatment industry, higher requirements are put forward for the use effect of flocculants; as a common inorganic flocculant, polyaluminum chloride (PAC) has short flocculation time, good effect of removing turbidity at low temperature, low price and no pollution. However, compared with organic polymer flocculants, there are still disadvantages such as low molecular weight, weak adsorption capacity for colloid bridging, single active group, large dosage, and more sludge. Polydimethyldiallyl ammonium chloride (PDDA for short) and polyacrylamide (PAM for short) have the advantages of large molecular weight, high charge density, strong bridging and adsorption capacity for colloidal substances, less dosag...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/56C02F1/52
CPCC02F1/5236C02F1/56
Inventor 张润利赵鑫
Owner 河南利源净化材料有限公司