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Scale inhibitor for reverse osmosis water treatment system and preparation method of scale inhibitor

A treatment system and reverse osmosis water technology, applied in water/sludge/sewage treatment, chemical instruments and methods, descaling and water softening, etc., can solve the problem of high cost of scale inhibitors, poor slow-release performance, and poor thermal stability and other problems, to achieve the effect of less usage, prolonging the service life and simple use

Inactive Publication Date: 2015-11-11
SUZHOU YOUJUN ENVIRONMENTAL SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] In view of the above technical problems, the present application provides a scale inhibitor for reverse osmosis water treatment system and its preparation method, which solves the problems of high cost, pollution to water body, poor thermal stability and slow release performance of existing water treatment scale inhibitors. question

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Add BTA and distilled water into a four-neck flask equipped with an electric stirrer, dropping funnel, thermometer and reflux condenser, heat to 50°C, stir for 20min, add AMPS and diethylenetriamine dropwise, heat up to 80°C, Reaction 1h.

[0025] Add ethylenediamine, PAA, formaldehyde and hydrolyzed maleic anhydride, raise the temperature to 100°C, react for 2 hours, raise the temperature to 120°C, add the remaining raw materials, and stir for 80 minutes to obtain the scale inhibitor for the reverse osmosis water treatment system.

[0026] The product has a good dispersing effect on silica, and has a high tolerance to iron and aluminum ions; the synergistic effect of each component has a good effect on calcium carbonate and calcium sulfate scale inhibition, no pollution, and is easy to use; scale inhibition The amount of agent used is only 4.5mg / L, which saves the cost of use and prolongs the cleaning of the membrane; the effect is long-lasting, and the scale inhibitio...

Embodiment 2

[0029] Add BTA and distilled water into a four-necked flask equipped with an electric stirrer, dropping funnel, thermometer and reflux condenser, heat to 60°C, stir for 30min, add AMPS and diethylenetriamine dropwise, and heat up to 90°C. Reaction 2h.

[0030] Add ethylenediamine, PAA, formaldehyde and hydrolyzed maleic anhydride, raise the temperature to 110°C, react for 3 hours, raise the temperature to 130°C, add the remaining raw materials, and stir for 90min to obtain the scale inhibitor for the reverse osmosis water treatment system.

[0031] The product has a good dispersing effect on silica, and has a high tolerance to iron and aluminum ions; the synergistic effect of each component has a good effect on calcium carbonate and calcium sulfate scale inhibition, no pollution, and is easy to use; scale inhibition The amount of agent used is only 3.5mg / L, which saves the cost of use and prolongs the cleaning time of the membrane; the effect is long-lasting, and the scale inh...

Embodiment 3

[0034] Add BTA and distilled water into a four-neck flask equipped with an electric stirrer, dropping funnel, thermometer and reflux condenser, heat to 50°C, stir for 20min, add AMPS and diethylenetriamine dropwise, heat up to 80°C, Reaction 1h.

[0035] Add ethylenediamine, PAA, formaldehyde and hydrolyzed maleic anhydride, raise the temperature to 100°C, react for 2 hours, raise the temperature to 120°C, add the remaining raw materials, and stir for 80 minutes to obtain the scale inhibitor for the reverse osmosis water treatment system.

[0036] The product has a good dispersing effect on silica, and has a high tolerance to iron and aluminum ions; the synergistic effect of each component has a good effect on calcium carbonate and calcium sulfate scale inhibition, no pollution, and is easy to use; scale inhibition The amount of agent used is less, only 2.5mg / L, which saves the cost of use and prolongs the cleaning time of the membrane; the effect is long-lasting, and the scale ...

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PUM

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Abstract

The invention discloses a scale inhibitor for a reverse osmosis water treatment system and a preparation method of the scale inhibitor. The scale inhibitor is prepared from hydroxyethylidene diphosphonic acid, Diethylenetriamine, BTA, polyaminopolyether methylenephosphonic acid, distilled water, PBTCA, HEDP, PAA, formaldehyde, hydrolytic maleic anhydride and AMPS. A product has a very good dispersing effect on silicon dioxide and high tolerance for iron and aluminum ions; the components realize co-synergistic action, have a good scale inhibiting effect on calcium carbonate and calcium sulfate, and are pollution-free and simple to use; the usage amount of the scale inhibitor is less and is only 0.5 to 4.5 mg / L; after the scale inhibitor is placed for one month at 55 to 75 DEG C, the scale inhibiting ratio is 96 to 100 percent.

Description

technical field [0001] The application belongs to the field of environmental protection reagent technology, and in particular relates to a scale inhibitor for reverse osmosis water treatment systems with environmental protection and good corrosion inhibition performance and a preparation method thereof. Background technique [0002] Scale inhibitor: It is a kind of agent that can disperse insoluble inorganic salts in water, prevent or interfere with the precipitation and scaling of insoluble inorganic salts on metal surfaces, and maintain good heat transfer effects of metal equipment. The anti-corrosion and anti-scaling agent for cold-changing equipment is formulated with epoxy resin and specific amino resin as the base material, adding appropriate amount of various anti-rust, anti-corrosion and other additives, and is a single component. It has excellent shielding, anti-seepage, anti-rust properties, good scale resistance, thermal conductivity, excellent resistance to wea...

Claims

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Application Information

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IPC IPC(8): C02F5/14
Inventor 金可心凌云凌天阳
Owner SUZHOU YOUJUN ENVIRONMENTAL SCI & TECH
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