Reverse osmosis membrane scale inhibitor and applications thereof

A technology of reverse osmosis membrane and scale inhibitor, which is applied to the reverse osmosis membrane scale inhibitor and its application field in the process of reverse osmosis water treatment, to achieve the effects of stable properties, protection of normal operation and reduction of cleaning frequency

Active Publication Date: 2013-11-20
深圳市爱康泉水处理服务有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to overcome the deficiencies of the prior art, and to provide a reverse osmosis membrane scale inhibitor used to solve the problem of CaCO3, Ca3(PO4)2, CaSO4, BaSO4, SrSO4, CaF2 on the surface of the reverse osmosis membrane during the operation of the membrane device. , metal oxides and silicic acid compounds, microorganisms and other deposits, effectively eliminate the membrane fouling caused by CaCO3, Ca3(PO4)2, CaSO4, BaSO4, SrSO4, CaF2, metal oxides and silicic acid compounds, microbial deposition

Method used

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  • Reverse osmosis membrane scale inhibitor and applications thereof
  • Reverse osmosis membrane scale inhibitor and applications thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Weigh 5.0 grams of hydroxyethylene diphosphonic acid, 5.0 grams of 2-phosphonobutane-1,2,4-tricarboxylic acid, 2.5 grams of polymaleic anhydride, 2.5 grams of polyepoxysuccinic acid, 5.0 grams of AA / SS / AMPS, 0.35 g of ethylenediamine, 0.75 g of TX-7, 0.5 g of 2,2-dibromo-3-nitrilopropionamide, finally diluted with distilled water to an aqueous solution with an effective content of 30%, and stirred evenly.

Embodiment 2

[0022] Weigh 5.0 g sodium aminotrimethylene phosphonate, 5.0 g diethylene triamine penta methylene phosphonic acid, 2.0 g polyacrylic acid, 3.0 g AA / AMPS, 0.5 g diethylene triamine, 1.0 g MOA-7 , 1.0 g of isothiazolinone derivatives, finally diluted with distilled water into an aqueous solution with an effective content of 30%, and stirred evenly.

Embodiment 3

[0024] Weigh 2.0 grams of sodium ethylenediamine tetramethylene phosphonate, 3.0 grams of 2-phosphonobutane-1,2,4-tricarboxylic acid, 5.0 grams of diethylenetriamine pentamethylene phosphonic acid, 2.5 gram of polymaleic anhydride, 5.0 grams of polyepoxysuccinic acid, 2.5 grams of polyaspartic acid, 5.0 grams of AA / AHPSE / APG, 0.2 grams of triethylenetetramine, 0.5 grams of OP-10, and finally diluted with distilled water to an effective content 30% aqueous solution, stir well.

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Abstract

The present invention relates to a reverse osmosis membrane scale inhibitor and applications thereof. The scale inhibitor contains an organic phosphonate, an organic carboxylic acid polymer, an organic amine and a surfactant, wherein a weight ratio of the components is 1:0.2-2.0:0.02-0.10:0.02-0.15. With application of the scale inhibitor of the present invention in a reverse osmosis system water treatment, the problem of membrane pollution caused by deposition of CaCO3, Ca3(PO4)2, CaSO4, BaSO4, SrSO4, CaF2, iron oxide and zinc salts on a reverse osmosis membrane can be solved, a reverse osmosis system work efficiency can be increased, a service life of reverse osmosis membrane agents and reverse osmosis equipment can be prolonged, and an operation cost of reverse osmosis can be reduced.

Description

technical field [0001] The invention relates to a scale inhibitor and its application, in particular to a reverse osmosis membrane scale inhibitor and its application in the reverse osmosis water treatment process. Background technique [0002] Reverse osmosis is a membrane separation technology developed after the 1960s. Compared with traditional ion exchange desalination technology, reverse osmosis membrane separation technology has no phase change, componentization, simple process, convenient operation, small footprint, It has the advantages of low investment and low power consumption, so it has been rapidly developed in industrial water treatment. [0003] In the practical application of reverse osmosis membrane separation technology, membrane fouling is a decisive factor affecting the reliability of the technology. During the membrane filtration process, particles, colloidal particles or solute macromolecules in the water are adsorbed and deposited on the surface of th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D65/08
Inventor 林毅
Owner 深圳市爱康泉水处理服务有限公司
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