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Preparation method of reverse osmosis membrane antisludging agent with high iron content

The technology of reverse osmosis membrane and scale inhibitor is applied in the field of preparation of reverse osmosis membrane scale inhibitor.

Inactive Publication Date: 2015-06-17
WEIHAI XIANGYU TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Due to the long-term operation of the reverse osmosis system, when the raw water with high iron content is treated, the iron ions in the water will be deposited on the membrane surface in the form of iron oxides and hydroxides, resulting in a decrease in the water production rate and water quality of the system. decline

Method used

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Effect test

Embodiment 1

[0013] The preparation method of the reverse osmosis membrane antiscalant of the high iron content described in the embodiment of the present invention, its preparation method is made up of the following steps:

[0014] 1) First, take 50g of diethylenetriaminepentaacetic acid ammonium salt and place it in a 250mL beaker, stir until dissolved;

[0015] 2) Next, add 50g of polyaspartic acid into the solution and stir in a water bath at 45°C for 60 minutes;

[0016] 3) Finally, cool to room temperature and finish the product.

Embodiment 2

[0018] The preparation method of the reverse osmosis membrane antiscalant of the high iron content described in the embodiment of the present invention, its preparation method is made up of the following steps:

[0019] 1) First, get 500kg diethylenetriaminepentaacetic acid ammonium salt and place it in a 1t reactor, stir until dissolved;

[0020] 2) Next, add 500kg of polyaspartic acid into the solution and stir in a 45°C water bath for 60 minutes;

[0021] 3) Finally, cool to room temperature and finish the product.

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Abstract

The invention relates to a preparation method of a reverse osmosis membrane antisludging agent with the high iron content. The preparation method comprises the following steps: firstly placing 50g of diethylenetriamine pentaacetic acid ammonium salt in a 250mL beaker, and stirring until the diethylenetriamine pentaacetic acid ammonium salt dissolves to obtain a solution; secondly adding 50g of polyaspartic acid into the solution, and carrying out water-bath stirring for 60 minutes at the temperature of 45 DEG C to obtain a mixture; and finally, cooling the mixture to the room temperature to obtain a finished product. The preparation method has beneficial effects that the diethylenetriamine pentaacetic acid ammonium salt and the polyaspartic acid are compounded to form a novel reverse osmosis membrane antisludging agent, the antisludging agent can be effectively complexed with iron ions in water and is high in antisludging capability for calcium carbonate and calcium sulfate, the cost is low, and the secondary pollution on a membrane can be avoided.

Description

technical field [0001] The invention relates to a preparation method of a scale inhibitor for water treatment, in particular to a preparation method of a reverse osmosis membrane scale inhibitor with high iron content. Background technique [0002] With the rapid development of society and economy, environmental pollution is becoming more and more serious, among which the most direct impact on people's life is water shortage and water quality deterioration, so the importance of water treatment technology is becoming increasingly prominent. With the continuous development of water treatment technology, the application of reverse osmosis system in the fields of water purification, reclaimed water reuse, and sewage reuse has gradually become popular. Among them, the antiscalant to prevent the scaling of the reverse osmosis membrane system is to maintain the Important agent for proper functioning. [0003] Reverse osmosis technology has been widely used in industrial production...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D65/08C02F5/12
Inventor 隋虎辰李洪社喻果
Owner WEIHAI XIANGYU TECH
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