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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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI 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, good flocculation effect, low cost and its Preparation and use method, it can be widely used in various sewage treatment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] According to the following mass percentages, the monomer solution was prepared—acrylamide aqueous solution with a mass fraction of 30%: 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 wash; fully dry at 40°C; pulverize to obtain a finished water treatment agent with a particle size of 0.15mm; Prepare a colloidal solution with a mass fraction of 5%; add 50ppm to the sewage, stir for 1 hour, and let it settle for 3 hours.

Embodiment 2

[0044] According to the following mass percentages, the monomer solution was prepared—acrylamide aqueous solution with a mass fraction of 40%: 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; pulverize to obtain a finished water treatment agent with a particle size of 0.20mm; Prepare a colloidal solution with a mass fraction of 5%; add 70ppm to the sewage, stir for 2 hours, and let it settle for 3 hours.

Embodiment 3

[0046] According to the following mass percentages, the monomer solution was prepared—acrylamide aqueous solution with a mass fraction of 40%: 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 wash; fully dry at 50°C; pulverize 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 70ppm to the sewage, stir for 2 hours, and let it settle for 4 hours.

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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.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, and relates to a method for preparing and using a water treatment agent. Specifically, the use of irradiation technology to prepare flocculants to remove organic pollutants in water and its application methods in landscape sewage and urban domestic sewage. Background technique [0002] In recent years, the discharge scale of sewage and waste water has been continuously increasing, and the types have been increasing. The composition of pollutants in water has become increasingly complex, and the harm to the environment has become increasingly serious. Commonly used sewage treatment methods are mainly divided into physical methods, chemical methods, and biological methods. However, the physical method consumes electricity, the water quality cannot be guaranteed, and cannot effectively remove algae and organic pollutants; the biological method occupies land resources, is slow to take effec...

Claims

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Application Information

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IPC IPC(8): C02F1/52C02F1/54
CPCC02F1/5236C02F1/54
Inventor 汪敏赵永富蒋希芝徐磊
Owner JIANGSU ACADEMY OF AGRICULTURAL SCIENCES
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