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Antisludging agent special for reverse osmosis membrane for seawater desalination

A technology of antiscalant and deionized water, which is applied in the field of special antiscalant for reverse osmosis membrane, which can solve the problems of reduced scaling probability, fouling and clogging of membrane elements, etc., and achieves the effect of not easy hydrolysis, good chelation, and remarkable effect

Inactive Publication Date: 2016-03-23
WEIHAI XIANGYU TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In actual operation, when the water molecules in the raw water are pressed to the other side of the membrane, the increase in salt content on the concentrated water side will easily cause fouling and clogging of the membrane elements. To solve this problem, the currently commonly used method is Add chemical antiscalant to reduce the chance of scaling

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Embodiment 1: select raw material by weight percentage:

[0019] Phosphorus-containing sulfonic acid-based copolymer 25%,

[0020] Polyacrylic acid 20%

[0021] ATMP15%,

[0022] EDTMPA15%,

[0023] the rest is water;

[0024] The finished product is obtained by mixing phosphorus-containing sulfonic acid-based copolymer, polyacrylic acid, ATMP, EDTMPA and deionized water, and filtering through sand filter.

Embodiment 2

[0025] Embodiment 2: select raw material by weight percentage:

[0026] Phosphorus-containing sulfonic acid-based copolymer 25%,

[0027] Polyacrylic acid 20%

[0028] ATMP15%,

[0029] EDTMPA15%,

[0030] the rest is water;

[0031] The finished product is obtained by mixing phosphorus-containing sulfonic acid-based copolymer, polyacrylic acid, ATMP, EDTMPA and deionized water, and filtering through sand filter.

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PUM

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Abstract

The invention relates to an antisludging agent special for a reverse osmosis membrane for seawater desalination. The lack of water resources is quite severe in China, especially in the northern coastal area, where fresh water resource shortage is critical, while seawater resources are rich; seawater desalination is one of efficient ways to solve the problem of fresh water resource shortage, and the most widely applied methods include the low-temperature multi-effect distillation method, the multistage flash distillation method, the reverse osmosis membrane method and the hot membrane coupling method which can all be used for large-scale production; due to the fact the saltness of seawater is quite high, scale formation is caused easily on the concentrated water side. The antisludging agent special for the reverse osmosis membrane for seawater desalination mainly contains phosphorus containing sulfo group copolymer, polyacrylic acid and organic phosphonic acid.

Description

technical field [0001] The invention relates to the technical field of seawater desalination, in particular to a special scale inhibitor for reverse osmosis membranes used for seawater desalination. Background technique [0002] With the development of the economy and the increase of the population, the human demand for water resources continues to increase, coupled with the unreasonable exploitation and utilization of water resources, many countries and regions have different degrees of water shortage problems. This phenomenon is called Water shortages. my country is a country with a serious shortage of water resources, especially in the northern coastal areas, where fresh water resources are extremely scarce and seawater resources are abundant. Serious Problem. [0003] Seawater desalination technology has become an important technology to solve the shortage of water resources. Seawater desalination technology can be divided into phase change method and non-phase change ...

Claims

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Application Information

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IPC IPC(8): B01D65/08C02F1/44C02F103/08
CPCY02A20/131B01D65/08B01D2321/162C02F1/441C02F2103/08
Inventor 孔凡龙李洪社喻果
Owner WEIHAI XIANGYU TECH
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