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Method for softening water body and synchronously preparing calcium carbonate whiskers by adopting electrochemistry

A calcium carbonate whisker, electrochemical technology, applied in chemical instruments and methods, descaling and water softening, natural water treatment, etc., can solve problems that are not green cleaning technology

Pending Publication Date: 2021-07-23
EAST CHINA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, this patent requires the addition of organic solvents, which is not a green and clean technology

Method used

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  • Method for softening water body and synchronously preparing calcium carbonate whiskers by adopting electrochemistry
  • Method for softening water body and synchronously preparing calcium carbonate whiskers by adopting electrochemistry
  • Method for softening water body and synchronously preparing calcium carbonate whiskers by adopting electrochemistry

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Embodiment 1

[0033] In this embodiment, a stainless steel mesh is used as the cathode 4, a ruthenium iridium titanium plate is used as the anode 5, and the distance between the cathode 4 and the anode 5 is 2.0 cm.

[0034] The components in the water sample to be treated containing calcium salt, magnesium salt and carbonate used in this embodiment are specifically: 0.3wt% soluble calcium chloride, 0.3wt% sodium bicarbonate, 0.1wt% magnesium chloride, see for details Table 1.

[0035] A method for softening water body and synchronously preparing calcium carbonate whiskers by electrochemistry, specifically comprising the following steps:

[0036](a) Take the untreated water sample containing calcium salt, magnesium salt and carbonate, add it to the electrolytic cell as an electrolyte solution, then put the cathode and anode in the electrolytic cell, and connect it with an external power supply to form an electrochemical reactor , and then pre-electrolyzed for 10 minutes at a temperature of ...

Embodiment 2

[0040] In this embodiment, a stainless steel mesh is used as the cathode 4, a ruthenium iridium titanium plate is used as the anode 5, and the distance between the cathode 4 and the anode 5 is 2.0 cm.

[0041] The components in the water sample to be treated containing calcium salt, magnesium salt and carbonate used in this embodiment are specifically: soluble calcium chloride 1wt%, sodium bicarbonate 1wt%, magnesium chloride 0.1wt%, see Table 1 for details .

[0042] A method for softening water body and synchronously preparing calcium carbonate whiskers by electrochemistry, specifically comprising the following steps:

[0043] (a) Take the untreated water sample containing calcium salt, magnesium salt and carbonate, add it to the electrolytic cell as an electrolyte solution, then put the cathode and anode in the electrolytic cell, and connect it with an external power supply to form an electrochemical reactor , and then pre-electrolyzed for 10 minutes at a temperature of 40...

Embodiment 3

[0047] In this embodiment, a stainless steel mesh is used as the cathode 4, a ruthenium iridium titanium plate is used as the anode 5, and the distance between the cathode 4 and the anode 5 is 2.0 cm.

[0048] The components in the water sample to be treated containing calcium salt, magnesium salt and carbonate used in this embodiment are specifically: soluble calcium chloride 2wt%, sodium bicarbonate 2wt%, magnesium chloride 0.1wt%, see Table 1 for details .

[0049] A method for softening water body and synchronously preparing calcium carbonate whiskers by electrochemistry, specifically comprising the following steps:

[0050] (a) Take the untreated water sample containing calcium salt, magnesium salt and carbonate, add it to the electrolytic cell as an electrolyte solution, then put the cathode and anode in the electrolytic cell, and connect it with an external power supply to form an electrochemical reactor , and then pre-electrolyzed at a temperature of 50°C and a voltag...

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Abstract

The invention relates to a method for softening a water body and synchronously preparing calcium carbonate whiskers by adopting electrochemistry, the method specifically comprises the following steps: (a) taking a to-be-treated water sample containing calcium salt, magnesium salt and carbonate, adding the to-be-treated water sample into an electrolytic bath, then installing a cathode and an anode into the electrolytic bath, and communicating with an external power supply to form an electrochemical reactor, then carrying out pre-electrolysis; (b) after pre-electrolysis is finished, continuing electrolysis, obtaining crystal whiskers through deposition and growth on the cathode, and completing softening of the to-be-treated water sample. Compared with the prior art, water softening and calcium salt utilization can be achieved at the same time, and obvious economic, social and environmental benefits are achieved.

Description

technical field [0001] The invention belongs to the technical field of water treatment, and in particular relates to a method for softening water body and synchronously preparing calcium carbonate whiskers by using electrochemistry. Background technique [0002] The presence of calcium and magnesium ions in water will lead to an important component of scaling. Since the concentration of magnesium ions is low and it is difficult to form precipitates, the research on calcium ion scaling is extensive. Calcium ions mainly exist in the form of calcium bicarbonate in water. When its concentration reaches saturation or the water temperature rises, it will decompose and transform into insoluble calcium carbonate, which will be precipitated in the form of scale and deposited on the surface of the vessel wall, forming a dense limescale. In addition, the presence of sulfate and phosphate can also combine with calcium ions to form hard scale. According to the cause of calcium ion scal...

Claims

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Application Information

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IPC IPC(8): C30B7/12C30B29/10C30B29/62C02F1/461C02F5/00C02F103/02
CPCC30B29/62C30B7/12C30B29/10C02F5/00C02F1/461C02F2103/023
Inventor 陈鹏孟广源徐佳丽成睿任治明赵薇张芯婉申心瑶张乐华
Owner EAST CHINA UNIV OF SCI & TECH
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