Antisludging agent of reverse osmosis water treatment system

A technology of scale inhibitor and weight percentage, applied in the field of water treatment chemicals, can solve the problems of low tolerance of iron ions, low scale inhibition performance, etc., and achieve the effects of reducing operating costs, prolonging service life, and improving dispersion.

Active Publication Date: 2008-05-07
OCHEMATE MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It overcomes the shortcomings of previous scale inhibitors that have good scale inhibition effect on calcium carbonate and calcium sulfate, but low tolerance to iron ions; and if the tolerance to iron and aluminum ions is high, the scale inhibition performance on calcium carbonate and calcium sulfate is relatively low. , therefore, the scale inhibitor of the present invention is a scale inhibitor with higher comprehensive performance

Method used

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  • Antisludging agent of reverse osmosis water treatment system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Example 1 Composition 1

[0023] 10% (weight percent: Wt) of hydroxyethylene diphosphonic acid; 25% (Wt) of diethylenetriamine pentamethylene phosphonic acid; 5% (Wt) of polyamino polyether group methylene phosphonic acid. Others are deionized water.

[0024] The preparation method is to mix the above raw materials with deionized water, stir evenly, let stand for 30 minutes, filter and fill.

Embodiment 2

[0025] Embodiment 2 Composition 2

[0026] Hydroxyethylene diphosphonic acid 15% (Wt); Diethylene triamine pentamethylene phosphonic acid 25% (Wt); Polyamino polyether group methylene phosphonic acid 5% (Wt); others are deionized water .

[0027] The preparation method is the same as in Example 1.

Embodiment 3

[0028] Embodiment three Composition 3

[0029] Hydroxyethylene diphosphonic acid 20% (Wt); Diethylene triamine pentamethylene phosphonic acid 25% (Wt); Polyaminopolyether group methylene phosphonic acid 15% (Wt); others are deionized water .

[0030] The preparation method is the same as in Example 1.

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Abstract

The invention provides anti-sludge inhibitor with relatively higher comprehensive performance. The anti-sludge inhibitor comprises 25 to 55 percent (weight percentage) of organic phosphonic acid. The organic phosphonic acid is selected three or more than three kinds from hydroxide radical ethylidene group bis phosphoric acid, ATMP, quadrol tetramethylene bis phosphoric acid, DTPA and multi-amino multi-ether methene phosphonic acid. The organic phosphonic acid comprises the components with the following weight percentage: 10 to 25 percent of hydroxide radical ethylidene group bis phosphoric acid, 10 to 30 percent of DTPA, and 5 to 20 percent of multi-amino multi-ether methene phosphonic acid.

Description

technical field [0001] The invention relates to a water treatment chemical in the chemical industry, in particular to a reverse osmosis membrane scale inhibitor. Background technique [0002] Antiscalant for reverse osmosis membrane is a kind of agent used in reverse osmosis water treatment system to prevent the deposition of dirt on the reverse osmosis membrane and affect the water treatment work of the system. [0003] Reverse osmosis has many years of application experience in the field of water treatment. The excellent desalination performance of reverse osmosis and the ability to remove various small and medium organic matter make it a powerful means of water treatment and wastewater reuse. However, during the operation of the reverse osmosis device, because its concentrated water side is extremely susceptible to sediment pollution, such as CaCO 3 , Ca 3 (PO 4 ) 2 , CaSO 4 , BaSO 4 , SrSO 4 , metal oxides, silica scale biological slime, etc., the deposition of a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F5/14
Inventor 李玉江张良
Owner OCHEMATE MATERIAL TECH CO LTD
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