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Phosphorus-free reverse osmosis membrane scale inhibitor and preparation method thereof

A reverse osmosis membrane and antiscalant technology, which is applied in the field of phosphorus-free reverse osmosis membrane antiscalant and its preparation, can solve the problems of poor scale inhibition effect, unsatisfactory scale inhibition effect, and poor desalination effect, etc. The effect of scale performance

Pending Publication Date: 2022-01-25
威海君创环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, although the scale inhibitors currently using zinc salt compound have strong scale inhibition rate against calcium carbonate, calcium sulfate, etc., the scale inhibition effect is still unsatisfactory, and the scale inhibition effect on metals such as copper ions and magnesium ions is not good.
Therefore, the desalination effect of industrial wastewater containing multiple metal ions is not good.

Method used

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  • Phosphorus-free reverse osmosis membrane scale inhibitor and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A phosphorus-free reverse osmosis membrane scale inhibitor is composed of the following raw materials in mass fraction:

[0035] Polyaspartic acid 12.5%

[0036] Polyepoxysuccinic Acid 58%

[0037] Chitosan 15%

[0038] Polyacrylic acid 7.5%

[0039] Sodium dodecylbenzenesulfonate 3%

[0040] Di(pentamethylcyclopentadienyl)zinc 4%.

[0041] The above-mentioned raw materials were weighed in proportion, and then mixed for 50 minutes at a stirring rate of 100 r / min to obtain a phosphorus-free reverse osmosis membrane scale inhibitor.

[0042] The prepared scale inhibitor was used to desalinate industrial wastewater with a pH of 7.5. The composition of industrial wastewater is shown in Table 1:

[0043] Table 1

[0044] Cu 2+

[0045] Weigh 100mL of the above-mentioned industrial wastewater and add 15mg of the phosphorus-free reverse osmosis membrane antiscalant prepared in Example 1, and then carry out ultrasonic mixing treatment at room temperature for...

Embodiment 2

[0052] A phosphorus-free reverse osmosis membrane scale inhibitor is composed of the following raw materials in mass fraction:

[0053] Polyaspartic acid 13%

[0054] Polyepoxysuccinic Acid 60%

[0055] Chitosan 17%

[0056] Polyacrylic acid 5%

[0057] Sodium dodecylbenzenesulfonate 2%

[0058] Di(pentamethylcyclopentadienyl)zinc 3%.

[0059] The above-mentioned raw materials were weighed in proportion, and then mixed for 50 minutes at a stirring rate of 100 r / min to obtain a phosphorus-free reverse osmosis membrane scale inhibitor.

Embodiment 3

[0061] A phosphorus-free reverse osmosis membrane scale inhibitor is composed of the following raw materials in mass fraction:

[0062] Polyaspartic acid 15%

[0063] Polyepoxysuccinic Acid 50%

[0064] Chitosan 20%

[0065] Polyacrylic acid 5%

[0066] Sodium dodecylbenzenesulfonate 5%

[0067] Di(pentamethylcyclopentadienyl)zinc 5%.

[0068] The above-mentioned raw materials were weighed in proportion, and then mixed for 50 minutes at a stirring rate of 1000 r / min to obtain a phosphorus-free reverse osmosis membrane scale inhibitor.

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Abstract

The invention relates to the technical field of water treatment, in particular to a phosphorus-free reverse osmosis membrane scale inhibitor and a preparation method thereof. The phosphorus-free reverse osmosis membrane scale inhibitor is prepared from the following raw materials in percentage by mass: 10 to 15 percent of polyaspartic acid, 50 to 65 percent of polyepoxysuccinic acid, 15 to 20 percent of chitosan, 5 to 10 percent of polyacrylic acid, 1 to 5 percent of anionic surfactant and 3 to 5 percent of bis (pentamethylcyclopentadiene) zinc. The phosphorus-free reverse osmosis membrane scale inhibitor disclosed by the invention can be used for desalting industrial and domestic wastewater containing various heavy metals, and has a relatively high scale inhibition rate on calcium ions, barium ions, magnesium ions and copper ions.

Description

technical field [0001] The invention relates to the technical field of water treatment, in particular to a phosphorus-free reverse osmosis membrane scale inhibitor and a preparation method thereof. Background technique [0002] With the rapid development of the economy, the amount of sewage discharge continues to increase, and the water resources for people's daily life are becoming more and more scarce. At the same time, they are also facing the problem of pollution of a large amount of water resources. At present, reverse osmosis and ion exchange are widely used in water treatment. The reverse osmosis method is favored by people because of its compact structure, low cost, small secondary pollution, stable water output, and high degree of automation. [0003] In 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 increased energy consumption, shortened mem...

Claims

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Application Information

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IPC IPC(8): B01D65/08C02F1/44
CPCB01D65/08C02F1/441B01D2321/168Y02A20/131
Inventor 于立飞王海涛
Owner 威海君创环保科技有限公司
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