Reverse osmosis membrane scale inhibitor and preparation and use method thereof

A technology of reverse osmosis membrane and scale inhibitor, which is applied in the field of water treatment chemicals, can solve the problems such as the formation of deposits on the surface of reverse osmosis membrane, and achieve the effect of good scale inhibition effect, environmental friendliness and low cost.

Active Publication Date: 2009-05-06
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In order to solve the problem of deposits on the surface of the reverse osmosis membrane during the reverse osmosis treatment process, and at the same time adapt to the use environment where the biochemical treatment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example

[0028] Examples 1-10

[0029] Component and preparation method of scale inhibitor:

[0030] The scale inhibitor is prepared in a four-necked flask equipped with a heating device, a reflux device, a stirring device and a temperature indicating device.

[0031] In a four-necked flask, add various scale inhibitors and additives in proportion. After the solid materials are completely dissolved, heat to a certain temperature and maintain for a certain time, stop heating, adjust the solid content with water, and cool to normal temperature to obtain the Invented scale inhibitor.

[0032] The scale inhibitor components and preparation conditions of Examples 1-10 are shown in Table 1.

[0033] Table 1

[0034] Real

[0035]

[0036] (The content in the table is percentage by weight.)

[0037] Among them: BC-648 is a terpolymer of acrylic acid, methyl acrylate and propylene sulfonic acid, BC-647 is a copolymer of sulfonated styrene and maleic acid, PASP is an aspartic ...

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PUM

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Abstract

The invention discloses a reverse osmosis membrane scale inhibitor, and a method for preparing and using the same. The reverse osmosis membrane scale inhibitor contains polymeric scale inhibitors and components selected from phosphono-carboxylic acid scale inhibitors, organic phosphonic acid scale inhibitors and auxiliary agents. The reverse osmosis membrane scale inhibitor is high in scale inhibition efficiency, small in addition, environmental-friendly, and is suitable to be used in environments with organic substances and in a reverse osmosis membrane treatment process for recycling sewage. For wastewater effluents from a biochemical treatment process with a chemical oxygen demand (COD) less than 150mg/l, the reverse osmosis membrane scale inhibitor has good scale inhibition effect on CaCO3, CaCO4, BaSO4, SrSO4 and so on, and can ensure the normal operation of a membrane component and prolong the service life of the membrane component.

Description

technical field [0001] The invention relates to a water treatment agent, in particular to a reverse osmosis membrane scale inhibitor used in the biochemical effluent reuse treatment process, and a method for preparing and using the same. Background technique [0002] Reverse osmosis is a membrane separation technology developed after the 1960s. Compared with traditional ion exchange desalination technology, most reverse osmosis processes have no phase change, can be operated at room temperature, and have high separation efficiency, simple process, It has the advantages of small investment and low operating cost, so it has been developed rapidly. [0003] Reverse osmosis technology has been widely used in industry, for example: use reverse osmosis technology to treat boiler influent water and achieve good results; perform advanced treatment on biochemical treatment effluent that meets discharge standards to obtain reuse water that meets industrial water standards; Filtration...

Claims

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Application Information

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IPC IPC(8): C02F5/14
Inventor 张英雄周霖许树华潘长群王峰平春霞邢琳
Owner CHINA PETROLEUM & CHEM CORP
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