A kind of alkaline low phosphorus reverse osmosis membrane scale inhibitor and preparation method

A technology of reverse osmosis membrane and scale inhibitor, which is applied in the field of water treatment, can solve the problems of biological contamination of bacteria in membrane system, environmental water source pollution, and high production cost, and achieve the effects of reducing biological pollution, simple production process and less dosage of dosing.

Active Publication Date: 2016-09-28
山东应天环保能源有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] At present, most of the phosphorus-containing reverse osmosis membrane antiscalants on the market will inevitably cause hidden dangers of membrane system bio-fouling and bacteria exceeding the standard, and the use of phos...

Method used

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  • A kind of alkaline low phosphorus reverse osmosis membrane scale inhibitor and preparation method

Examples

Experimental program
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Effect test

Embodiment 1

[0036] The alkaline low-phosphorus reverse osmosis membrane antiscalant of this embodiment includes the following components in mass percent:

[0037] EDTMPS 20%,

[0038]PAA 30%,

[0039] Dimethyl Fumarate 10%,

[0040] Graphene oxide aqueous dispersion 4.0%,

[0041] 10% (by mass) borax in water 36%.

[0042] The preparation method of the alkaline low-phosphorus reverse osmosis membrane antiscalant in this embodiment is as follows: the mass percentage of this embodiment takes each raw material, and EDTMPS, PAA, dimethyl fumarate and graphene oxide aqueous dispersion are sequentially Add it into the container, stir at room temperature for 2.0 hours, mix well, add a pH regulator, control the pH value of the material system to 9-11, and ultrasonically treat it for 15 minutes, then heat the material to 80°C, filter while it is hot, and cool the filtrate, that is Obtain the present embodiment alkaline low phosphorus reverse osmosis membrane antiscalant.

Embodiment 2

[0044] The alkaline low-phosphorus reverse osmosis membrane antiscalant of this embodiment includes the following components in mass percent:

[0045] EDTMPS 35%,

[0046] PAA 25%,

[0047] Dimethyl Fumarate 8.5%,

[0048] Graphene oxide aqueous dispersion 4.6%,

[0049] 15% (by mass) borax in water 26.9%.

[0050] The preparation method is the same as in Example 1.

Embodiment 3

[0052] The alkaline low-phosphorus reverse osmosis membrane antiscalant of this embodiment includes the following components in mass percent:

[0053] EDTMPS 25%,

[0054] PAA 25%,

[0055] Dimethyl Fumarate 8%,

[0056] Graphene oxide aqueous dispersion 3.5%,

[0057] 10% (by mass) borax in water 38.5%.

[0058] The preparation method is the same as in Example 1.

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Abstract

The invention provides an alkaline low-phosphorous reverse osmosis membrane anti-scaling agent and a preparation method. The alkaline low-phosphorous reverse osmosis membrane anti-scaling agent comprises the following components in percentage by mass: 15-50% of EDTMPS, 10-40% of PAA with the molecular weight of 1800-2200, 5-20% of dimethyl fumarate, 2-8% of 0.5-2mg/ml graphene oxide aqueous dispersion, and 20-50% of a pH value adjusting agent. The alkaline low-phosphorous reverse osmosis membrane anti-scaling agent is simple in production process, free of waste emission, controllable in cost, appropriate in price, applicable to scale dispersion of various reverse osmosis membranes, capable of effectively achieving synergistic effects of physical adsorption and chemical adsorption on pollutants, and meanwhile is excellent in corrosion inhibition, sterilization and mold prevention.

Description

technical field [0001] The invention belongs to the technical field of water treatment and relates to a scale inhibitor, in particular to an alkaline low phosphorus reverse osmosis membrane scale inhibitor and a preparation method. Background technique [0002] At present, reverse osmosis technology has been increasingly widely used in desalination, ultrapure water preparation, sewage treatment and various separation and purification processes in chemical, pharmaceutical, food and other industries. Reverse osmosis technology is a reverse osmosis process in which an external driving force is applied to salt water to overcome osmotic pressure and allow water molecules to pass through the membrane. After reverse osmosis treatment, 99% of the salt and silicon dioxide in the water can be removed, and 99.5% of the calcium and magnesium in the water can be removed. However, the concentrated water of the reverse osmosis unit is easily polluted by particles, colloids and insoluble s...

Claims

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Application Information

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IPC IPC(8): B01D65/08
Inventor 张宗峰张忠训杨森
Owner 山东应天环保能源有限公司
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