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Preparation method and application of material for mineralization of purified water after reverse osmosis

A pure water and reverse osmosis technology, applied in the field of water treatment, can solve the corrosion problems of metal equipment, achieve high conversion rate, reduce equipment, and avoid equipment loss

Active Publication Date: 2019-06-21
青岛引黄济青水务集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method needs to continuously feed carbon dioxide at one end of the mineralization regulating bed, so that limestone reacts with carbon dioxide and water to produce calcium bicarbonate
Although this is currently the main method for mineralization after seawater desalination, on the one hand, the equipment needs to be equipped with carbon dioxide input equipment, on the other hand, the hydrolysis of the produced calcium bicarbonate will produce hydrogen ions, which have a certain impact on metal equipment Corrosive

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  • Preparation method and application of material for mineralization of purified water after reverse osmosis
  • Preparation method and application of material for mineralization of purified water after reverse osmosis
  • Preparation method and application of material for mineralization of purified water after reverse osmosis

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preparation example Construction

[0027] What the present invention relates to is the preparation method for the mineralization material of purified water after reverse osmosis, comprises the following steps:

[0028] a. Wash the shells and dry them in the air; put them into a muffle furnace for calcination, take them out to cool, and crush them to obtain coarse shell powder. The main component of the shell is calcium carbonate. Calcining the shell through the high temperature of the muffle furnace makes the calcium carbonate react to produce calcium oxide and carbon dioxide, and makes the structure of the shell very loose, which is conducive to the next step of dissolution.

[0029] b. Pulverizing the periclase to obtain periclase coarse powder. Periclase is a magnesium oxide mineral, mainly produced in marble, and is formed by metamorphism of dolomite at high temperature. Crush the periclase for the next step of dissolution.

[0030] c. Put the coarse shell powder and the periclase coarse powder in the con...

Embodiment 1

[0046] The preparation method of the mineralized material used for pure water after reverse osmosis comprises the following steps:

[0047]a. Wash the shells and dry them in the air; put them into a muffle furnace for calcination, take them out to cool, and crush them to obtain coarse powder of shells; crush the shells to a particle size of 80 mesh.

[0048] b. Grinding the periclase to obtain periclase coarse powder; pulverizing the periclase to a particle size of 80 mesh.

[0049] c. Put the coarse shell powder and the periclase coarse powder in the container, add water several times, and grind them into a paste.

[0050] d. Add lactic acid to the above pasty suspension several times, stir evenly in an 80°C water bath, and pour out the suspension; the concentration of the lactic acid solution is 70%.

[0051] e. Collect the suspension that has been poured out many times, heat to evaporate the water, and when the suspension turns into a paste, cool to precipitate crystals to...

Embodiment 2

[0055] The preparation method of the mineralized material used for pure water after reverse osmosis comprises the following steps:

[0056] a. Wash the shells and dry them in the air; put them into a muffle furnace for calcination, take them out to cool, and crush them to obtain coarse shell powder; crush the shells to a particle size of 100 mesh.

[0057] b. Grinding the periclase to obtain periclase coarse powder; pulverizing the periclase to a particle size of 100 mesh.

[0058] c. Put the coarse shell powder and the periclase coarse powder in the container, add water several times, and grind them into a paste.

[0059] d. Add lactic acid to the above pasty suspension several times, stir evenly in a 90°C water bath, and pour out the suspension; the concentration of the lactic acid solution is 80%.

[0060] e. Collect the suspension that has been poured out many times, heat to evaporate the water, and when the suspension turns into a paste, cool to precipitate crystals to o...

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Abstract

The invention relates to a preparation method of a mineralization material for purified water subjected to reverse osmosis. The preparation method comprises washing, drying, calcining, cooling and crushing shells, crushing periclase, putting the shell coarse powder and periclase coarse powder into a container, adding water into the container in batches, carrying out grinding to obtain paste, adding lactic acid in the paste-type suspension in batches, carrying out uniform stirring in a water bath, discharging the suspension, collecting the suspensions in multiple processes, heating the collected suspensions to evaporate water, and carrying out cooling to precipitate crystals which are mineralization materials when the suspensions form paste. The preparation method can prepare the mineralization material rich in calcium lactate and magnesium lactate. Through the characteristic of very small solubility of calcium lactate and magnesium lactate in cold water, the mineralization material can mineralize purified water subjected to sea water desalination and prevent the defects of the traditional mineralization method. The preparation method has simple processes and a high material conversion rate and realizes a low production cost. The mineralization material prevents phenomenon of mineral deficiency in the human body and protects municipal water supply pipes.

Description

technical field [0001] The invention relates to the field of water treatment, in particular to a preparation method and application of a material used for mineralization of purified water after reverse osmosis. Background technique [0002] Reverse osmosis is a membrane separation technology driven by pressure by means of the function of selectively permeable (semi-permeable) membrane. When the pressure applied in the system is greater than the osmotic pressure of the influent solution, water molecules continuously pass through the membrane. , flows into the central tube through the water flow channel, and then flows out at one end. Impurities in the water, such as ions, organic matter, bacteria, viruses, etc., are trapped on the water inlet side of the membrane, and then flow out at the concentrated water outlet, so as to achieve the purpose of separation and purification. [0003] Reverse osmosis is currently the membrane separation technology with the highest filtration p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/68
CPCC02F1/68
Inventor 马越
Owner 青岛引黄济青水务集团有限公司
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