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Non-phosphorus reverse osmosis membrane scale inhibitor and preparation method thereof

A reverse osmosis membrane and scale inhibitor technology, which is applied in the field of reverse osmosis membrane scale inhibitor and its preparation, can solve the problems of enhanced scale inhibition effect, and achieve good dispersion and solubility, good compatibility, and good biodegradability

Active Publication Date: 2011-01-19
北京蓝星清洗有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it cannot adapt to the high concentration of inorganic scale and colloidal scale in surface water treatment, and the scale inhibition effect still needs to be enhanced. At the same time, pH value regulators need to be added to ensure the appropriate range of pH

Method used

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  • Non-phosphorus reverse osmosis membrane scale inhibitor and preparation method thereof
  • Non-phosphorus reverse osmosis membrane scale inhibitor and preparation method thereof
  • Non-phosphorus reverse osmosis membrane scale inhibitor and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A phosphorus-free reverse osmosis membrane scale inhibitor, consisting of the following components, sodium polyacrylate 10%, polystyrene sulfonate 5%, acrylic acid-2-acrylamide-2-methylpropanesulfonic acid copolymer (AA / AMPS) 10%, polyaspartic acid 15%, dioctadecyl dimethyl ammonium bromide 5%, and the rest is deionized water. The preparation method is to bromide the sodium polyacrylate, polystyrene sulfonate, acrylic acid-2-acrylamide-2-methylpropanesulfonic acid copolymer, polyaspartic acid, dioctadecyl dimethyl bromide Add ammonium and deionized water into the container at room temperature, and stir until a uniform and transparent solution is obtained.

Embodiment 2

[0036] A phosphorus-free reverse osmosis membrane antiscalant, consisting of the following components, polyepoxysuccinic acid 13%, polystyrene sulfonate 5%, aminopropanesulfonic acid-acrylic acid 10%, sodium polyaspartate 10% %, dioctadecyl dimethyl ammonium bromide 2%, and the rest is deionized water.

[0037] The preparation method is to mix the polymethacrylic acid, polystyrene sulfonate, aminopropanesulfonic acid-acrylic acid, sodium polyaspartate, dioctadecyldimethylammonium bromide and deionized water at room temperature Add to the container and stir until a uniform and transparent solution is obtained.

Embodiment 3

[0039] A phosphorus-free reverse osmosis membrane scale inhibitor, consisting of the following components, acrylic acid-methylene succinic acid 15%, polystyrene sulfonate 8%, acrylic acid-2-acrylamide-2-methylpropanesulfonic acid Copolymer (AA / AMPS) 10%, polyaspartic acid 10%, dioctadecyl dimethyl ammonium bromide 1%, and the rest is deionized water.

[0040] The preparation method is to prepare the acrylic acid-methylene succinic acid, polystyrene sulfonate, acrylic acid-2-acrylamide-2-methylpropanesulfonic acid copolymer (AA / AMPS), polyaspartic acid, bis Add octadecyldimethylammonium bromide and deionized water into the container at room temperature, and stir until a uniform and transparent solution is obtained.

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Abstract

The invention discloses a non-phosphorus reverse osmosis membrane scale inhibitor and a preparation method thereof. The non-phosphorus reverse osmosis membrane scale inhibitor comprises the following components: 5-20% of carboxylic acid polymer, 6-36% of sulfonic acid copolymer, 5-15% of polyamino acid, 0.1-20% of Dimethyldioctadecylammonium bromide and the balance deionized water. The preparation method is as follows: adding the above components in a container at room temperature, and stirring to form a uniform and transparent solution. The non-phosphorus reverse osmosis membrane scale inhibitor provided by the invention is suitable for pretreatment of surface water, can efficiently prevent inorganic scales and colloid scales from depositing on a reverse osmosis membrane, ensures the pH value to be 2-7 in the use process, has no toxicity and good compatibility with a common flocculant, can not cause any damage on the membrane compared with acid.

Description

technical field [0001] The invention relates to a reverse osmosis membrane scale inhibitor in the water treatment process and a preparation method thereof, in particular to a phosphorus-free reverse osmosis membrane scale inhibitor and a preparation method thereof. Background technique [0002] The reverse osmosis method has gradually replaced the ion exchange method in the field of water treatment technology because of its small footprint, low operating costs, no secondary pollution, stable water output, and high degree of automation, and has become the main technology for pure water preparation. It has been widely used in pure water treatment, pharmaceutical industry water, seawater desalination, cooling tower make-up water, boiler make-up water and other industries. During the operation of the reverse osmosis system, the fouling of the reverse osmosis membrane seriously affects the operating efficiency of the reverse osmosis device, such as: increasing the energy consumpt...

Claims

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Application Information

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IPC IPC(8): C02F5/12
Inventor 单素灵王双田白剑利文措杰郭廷冰
Owner 北京蓝星清洗有限公司
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