High-TDS-content and high-silicon-dioxide-content scale inhibition and dispersion agent for reverse osmosis inflow and preparation method of scale inhibition and dispersion agent

A technology of scale inhibitor and dispersant, silica, applied in chemical instruments and methods, descaling and water softening, water/sludge/sewage treatment, etc. Large amount and other problems, to achieve good effect of scale inhibition and dispersion

Inactive Publication Date: 2021-11-16
SHANDONG TIANQING TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In addition, the currently used antiscalant and dispersant products have a high concentration, a large amount of compounding, and a narrow range of adaptation to water quality.

Method used

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  • High-TDS-content and high-silicon-dioxide-content scale inhibition and dispersion agent for reverse osmosis inflow and preparation method of scale inhibition and dispersion agent
  • High-TDS-content and high-silicon-dioxide-content scale inhibition and dispersion agent for reverse osmosis inflow and preparation method of scale inhibition and dispersion agent
  • High-TDS-content and high-silicon-dioxide-content scale inhibition and dispersion agent for reverse osmosis inflow and preparation method of scale inhibition and dispersion agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A reverse osmosis influent high TDS content, high silicon dioxide antiscaling dispersant, comprising the following components by mass percentage:

[0032] Polyamino polyether methylene phosphonic acid 25%

[0033] Amino acid methylene phosphonic acid 15%

[0034] Polymaleic anhydride 12%

[0035] Acrylic acid - hydroxypropyl acrylate copolymer 13%

[0036] A kind of preparation method of reverse osmosis feed water containing high TDS, high silicon dioxide antiscaling dispersant as above, comprises the following steps,

[0037] Step 1: Weighing polyamino polyether group methylene phosphonic acid, amino acid methylene phosphonic acid, polymaleic anhydride, acrylic acid-hydroxypropyl acrylate copolymer in sequence by mass percentage;

[0038] Step 2: Amino-terminated polyether and phosphorous acid are added to the reactor at a molar ratio of 1:4, and sulfuric acid with a mass fraction of phosphorous acid of 7% and partially demineralized water are added;

[0039] Step ...

Embodiment 2

[0043] A reverse osmosis influent high TDS content, high silicon dioxide antiscaling dispersant, comprising the following components by mass percentage:

[0044] Polyamino polyether methylene phosphonic acid 30%

[0045] Amino acid methylene phosphonic acid 12%

[0046] Polymaleic anhydride 12%

[0047] Acrylic acid - hydroxypropyl acrylate copolymer 11%

[0048] A kind of preparation method of reverse osmosis feed water containing high TDS, high silicon dioxide antiscaling dispersant as above, comprises the following steps,

[0049] Step 1: Weighing polyamino polyether group methylene phosphonic acid, amino acid methylene phosphonic acid, polymaleic anhydride, acrylic acid-hydroxypropyl acrylate copolymer in sequence by mass percentage;

[0050] Step 2: Amino-terminated polyether and phosphorous acid are added to the reactor at a molar ratio of 1:4, and sulfuric acid with a mass fraction of phosphorous acid of 7% and partially demineralized water are added;

[0051]Step 3...

Embodiment 3

[0055] A reverse osmosis influent high TDS content, high silicon dioxide antiscaling dispersant, comprising the following components by mass percentage:

[0056] Polyamino polyether methylene phosphonic acid 25%

[0057] Amino acid methylene phosphonic acid 10%

[0058] Polymaleic anhydride 12%

[0059] Acrylic acid - hydroxypropyl acrylate copolymer 15%

[0060] A kind of preparation method of reverse osmosis feed water containing high TDS, high silicon dioxide antiscaling dispersant as above, comprises the following steps,

[0061] Step 1: Weighing polyamino polyether group methylene phosphonic acid, amino acid methylene phosphonic acid, polymaleic anhydride, acrylic acid-hydroxypropyl acrylate copolymer in sequence by mass percentage;

[0062] Step 2: Amino-terminated polyether and phosphorous acid are added to the reactor at a molar ratio of 1:4, and sulfuric acid with a mass fraction of phosphorous acid of 7% and partially demineralized water are added;

[0063] Step ...

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Abstract

The invention discloses a high-TDS-content and high-silicon-dioxide-content scale inhibition and dispersion agent for reverse osmosis inflow and a preparation method of the scale inhibition and dispersion agent. The scale inhibition and dispersion agent comprises the following components in percentage by mass: 20-40% of polyamino polyether methylene phosphonic acid, 5-15% of amino acid methylene phosphonic acid, 5-20% of polymaleic anhydride and 5-25% of an acrylic acid-hydroxypropyl acrylate copolymer. Starting from complementation of the effects of chelating, dispersing and the like of a single agent on calcium and magnesium ions, the scale inhibition and dispersion agent can be widely applied to the fields of reverse osmosis inflow, circulating cooling water, seawater desalination and the like, and has good scale inhibition and dispersion effects; after the scale inhibition and dispersion agent with a concentration of 10 g/L is added, the TDS content of the reverse osmosis inflow can reach 60000 mg/L when the addition amount of the composition is 10mg/L, and calcium tolerance in water can reach 2000 mg/L; and the scale inhibition and dispersion agent can be degraded in a natural environment.

Description

technical field [0001] The invention relates to the technical field of water treatment, in particular to a reverse osmosis influent high-containing TDS and high-silica antiscaling dispersant and a preparation method thereof. Background technique [0002] Water is the basic condition for human survival, but water resources in the world are limited. my country's per capita water volume is only a quarter of the world's per capita water volume, and water resources are even poorer. With the rapid development of industry, the ecological balance of water has been seriously damaged day by day. In order to solve the water resource crisis and adapt to sustainable development, it is necessary to save water reasonably. The amount of cooling water in industrial water accounts for 60-80% by weight of the total water consumption. Therefore, the main goal of saving industrial water is to recycle, to properly treat and reuse the waste water produced by production and domestic waste water, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F5/14C02F5/10
CPCC02F5/14C02F5/10C02F2303/08
Inventor 王俊明徐旭东张雷张留成刘娅林胡文翠王金明谢泽新张宁郑萍
Owner SHANDONG TIANQING TECH DEV
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