Scale inhibiting-dispersing agent for reverse osmosis membrane and preparation method thereof

A technology of scale inhibitor dispersant and reverse osmosis membrane, applied in semipermeable membrane separation, chemical instruments and methods, permeation/dialysis water/sewage treatment, etc., can solve the problems of reducing dosage, membrane pollution, etc. The effect of increasing the volume and facilitating transportation

Active Publication Date: 2016-10-12
INLEN CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a scale inhibitor dispersant for reverse osmosis membranes, which does not contain phosphorus and other environmentally harmful components, effectively reduces the dosage, and can effectively solve the problem of various insoluble salts. The membrane fouling problem brought by the deposition problem on the reverse osmosis membrane; the present invention provides its preparation method simultaneously

Method used

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  • Scale inhibiting-dispersing agent for reverse osmosis membrane and preparation method thereof
  • Scale inhibiting-dispersing agent for reverse osmosis membrane and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Add 2-methylene succinic acid-acrylic acid copolymer, polyepoxysuccinic acid, polyethylene glycol monoallyl ether, and 2,4-diaminotoluene into the reaction equipment in sequence, and stir at 35°C for 1 hour , and then evacuated at 40°C for 1.5 hours, stirred evenly and then left to stand, then the scale inhibitor dispersant for reverse osmosis system was obtained. The weight percentage of each raw material is: 2-methylene succinic acid-acrylic acid copolymer 28%, polyepoxysuccinic acid 37%, polyethylene glycol monoallyl ether 27%, 2,4-diamino Toluene 8%.

[0024] The antiscaling and dispersing agent prepared in Example 1 was used in a 120-ton one-stage two-stage reverse osmosis system of a certain power plant, and the water quality analysis is shown in Table 1:

[0025] Table 1 Water quality analysis results of a 120-ton one-stage two-stage reverse osmosis system in a power plant

[0026] Calcium hardness, mg / L (as CaCO 3 count)

[0027] Dilute the 8-fold ...

Embodiment 2

[0029] Add 2-methylene succinic acid-acrylic acid copolymer, polyepoxysuccinic acid, polyethylene glycol monoallyl ether, and 2,4-diaminotoluene into the reaction equipment in sequence, and stir at 45°C for 1 hour , and then evacuated at 45°C for 1 hour, stirred evenly and then left to stand, then the scale inhibitor dispersant for reverse osmosis system was obtained. The weight percentage of each raw material is: 38% of 2-methylene succinic acid-acrylic acid copolymer, 32% of polyepoxysuccinic acid, 20% of polyethylene glycol monoallyl ether, 2,4-diamino Toluene 10%.

[0030] The scale inhibitor dispersant prepared in Example 2 was used in an 80*2 ton first-stage two-stage reverse osmosis system in a steel plant, and the water quality analysis is shown in Table 2:

[0031] Table 2 Water quality analysis results of a 120-ton one-stage two-stage reverse osmosis system in a power plant

[0032]

[0033]

[0034] Dilute the 8-fold concentrated solution of the scale inhibi...

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Abstract

The invention belongs to the technical field of water treatment and in particular relates to a scale inhibiting-dispersing agent for a reverse osmosis membrane and a preparation method thereof. The scale inhibiting-dispersing agent is characterized by being prepared from the following components in percentage by weight: 10 percent to 45 percent of 2-methylenesuccinic acid-hydroxy-propyl acrylate copolymer, 24 percent to 55 percent of polyepoxysuccinic acid, 10 percent to 35 percent of polyethylene glycol monoallyl ether and 5 percent to 10 percent of 2,4-diaminotoluene. The scale inhibiting-dispersing agent for the reverse osmosis membrane, provided by the invention, is a 8-time concentrated solution; the dosage is effectively reduced and the scale inhibiting-dispersing agent does not contain environmentally harmful components including phosphorus and the like; membrane pollution problems caused by a deposition problem on the reverse osmosis membrane, caused by various types of insoluble salts, can be effectively solved; the invention further provides the preparation method of the scale inhibiting-dispersing agent.

Description

technical field [0001] The invention belongs to the technical field of water treatment, and in particular relates to a scale-inhibiting dispersant for reverse osmosis membranes and a preparation method thereof. Background technique [0002] Reverse osmosis technology is a technology that uses reverse osmosis membranes to separate dissolved salts, colloids, microorganisms, etc. in water from water. At present, reverse osmosis technology is developing rapidly in my country and is widely used in electric power, medicine, steel and other industries. And because it can meet various needs such as high effluent quality of sewage treatment, reclaimed water reuse and seawater desalination, it will usher in a broad space for development in the future. [0003] After the raw water passes through the reverse osmosis system, the water on the concentrated water side is concentrated by 4 times (calculated based on the recovery rate of 75% of the system), and the concentration of ions in t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D65/08C02F1/44
CPCB01D65/08B01D2321/168C02F1/441
Inventor 邱振华王明祥
Owner INLEN CHEM TECH
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