Preparation method and application method of water treatment agent

A technology of water treatment agent and aqueous solution, applied in water/sewage treatment, water/sludge/sewage treatment, flocculation/sedimentation water/sewage treatment, etc. The effect of simple raw materials, cost saving and less usage

Inactive Publication Date: 2018-04-20
JIANGSU ACADEMY OF AGRICULTURAL SCIENCES
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AI-Extracted Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to invent a water treatment agent with simple preparation, convenient use,...
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Abstract

The invention relates to a preparation method and an application method of a water treatment agent. The water treatment agent is prepared from the following raw materials in percentage by mass: 75 to100 percent of acrylamide water solution with the mass fraction being 30 to 45 percent, 0 to 25 percent of dimethyl diallyl ammonium chloride, and 0 to 0.5 percent of copper sulfate pentahydrate. Thepreparation method comprises the steps of irradiating a monomer water solution, wherein the irradiation dose is 2 to 12kGy; cutting a monomer colloid obtained after irradiation into slices, stirring and cleaning; fully drying at 40 to 70 DEG C; smashing to obtain a finished product of the water treatment agent with the particle size of 0.15 to 0.60mm. During sewage treatment, the application method comprises the steps of preparing the water treatment agent into a colloid solution with the mass fraction being 5 to 10 percent; adding into the sewage according to the additive amount being 50 to 100ppm, stirring for 1 to 3h, and carrying out static settlement for 3 to 5h. The water treatment agent provided by the invention is prepared through an irradiation method, is synthesized at one step,and is simple and feasible, convenient to apply, high in flocculation ability during sewage treatment, capable of efficiently removing floating objects in the sewage, remarkably reducing sewage turbidity, improving sewage transparency and removing sewage odor, and applicable to various water.

Application Domain

Water/sewage treatment by flocculation/precipitation

Technology Topic

ChemistryCopper sulfate pentahydrate +16

Examples

  • Experimental program(7)

Example Embodiment

[0041] Example 1.
[0042] Prepare the monomer solution according to the following mass percentages—a 30% mass fraction of acrylamide aqueous solution: 75%, dimethyl diallyl ammonium chloride: 24.9%, copper sulfate pentahydrate: 0.1%; the monomer aqueous solution Carry out irradiation treatment with an irradiation dose of 2kGy; cut the monomer colloid obtained after irradiation into small pieces, stir and clean; fully dry at 40°C; crush to obtain a finished water treatment agent with a particle size of 0.15mm; the water treatment agent It is formulated into a colloidal solution with a mass fraction of 5%; added to the sewage according to the addition amount of 50 ppm, stirred for 1 hour, and allowed to settle for 3 hours.

Example Embodiment

[0043] Example 2.
[0044] Prepare the monomer solution according to the following mass percentages-40% mass fraction of acrylamide aqueous solution: 80%, dimethyl diallyl ammonium chloride: 19.8%, copper sulfate pentahydrate: 0.2%; the monomer aqueous solution Carry out irradiation treatment with an irradiation dose of 4kGy; cut the monomer colloid obtained after irradiation into small pieces, stir and wash; fully dry at 50°C; crush to obtain a finished water treatment agent with a particle size of 0.20mm; the water treatment agent It is formulated into a colloidal solution with a mass fraction of 5%; added to the sewage according to the addition amount of 70ppm, stirred for 2h, and allowed to settle for 3h.

Example Embodiment

[0045] Example 3.
[0046] Prepare the monomer solution according to the following mass percentages-40% mass fraction of acrylamide aqueous solution: 85%, dimethyl diallyl ammonium chloride: 14.8%, copper sulfate pentahydrate: 0.2%; the monomer aqueous solution Carry out irradiation treatment with an irradiation dose of 6kGy; cut the monomer colloid obtained after irradiation into small pieces, stir and clean; fully dry at 50°C; crush to obtain a finished water treatment agent with a particle size of 0.45mm; Prepare a colloidal solution with a mass fraction of 10%; add it to the sewage according to the addition amount of 70ppm, stir for 2h, and settle for 4h.

PUM

PropertyMeasurementUnit
Particle size0.15mm
Particle size0.2mm
Particle size0.45mm

Description & Claims & Application Information

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