JPS60255147A - Regenerating agent for water softening apparatus - Google Patents

Abstract

PURPOSE:To regenerate a cation-exchange body in a water softening apparatus into a potassium-type body when the body is regenerated and to obtain potassium ion-contg. soft water by preparing the regenerating agent for the water softening apparatus from a potassium ion-releasing electrolyte such as potassium chloride. CONSTITUTION:The regenerating agent for the water softening apparatus is prepared from a potassium ion-releasing electrolyte such as potassium chloride, potassium sulfate, potassium nitrate, potassium phosphate, potassium carbonate, potassium acetate, and potassium tartrate. When the water softening apparatus is used for a long period, iron rust and scales are deposited on the cation-exchange body in the apparatus, and the iron rust and scales can be removed with a common regenerating agent. However, when a water-soluble oxidizing agent is incorporated into the regenerating agent, the iron rust and scales can be efficiently removed. An alkyl metallic salt of peracid such as potassium percarbonate and a halogen acid salt such as potassium hypochlorite are used as said water- soluble oxidizing agent.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] This invention relates to a regenerant for water softeners. The water softener referred to here is a device mainly used to soften drinking water, and it passes tap water, simple tap water, well water, etc., through a layer made of at least a cation exchanger filled in a container. , means a device that removes at least metal ions other than alkali metals (eg, calcium, magnesium, etc.).

[Prior art and its problems] When a water softener is used for a long period of time, all of the exchange groups of the cation exchanger therein are replaced with metal ions other than alkali metals, resulting in a loss of softening ability. . In such a case, it is necessary to temporarily suspend the use of the water softener and regenerate the exchange groups of the cation exchanger to the form before use through a regenerant containing an appropriate cation. As a regenerating agent, hydrochloric acid,
A strong acid such as sulfuric acid can also be used, but the use of such a strong acid is dangerous and has the drawback of attacking metal instruments, parts, etc. Therefore, conventionally, chlorinated sulfur chloride as a regenerating agent has been exclusively used. Mono-lithium chloride was used because each is safe and inexpensive (sweat, or the exchange group of a circular ion exchanger regenerated with sodium chloride becomes a mono-lium salt, which can be used to transfer other ions (e.g. Calcillano, magnesium, etc.) and water softener/)
Gradually add 1-lium A to the soft water obtained from 1.
C2 and (, l
This is because I didn't think it would be beneficial to use 11TL.

However, in recent years, in 27-1, there is a tendency for f l-・su "")l\ to be ingested in excess. It has become clear that it induces or worsens adult diseases such as diabetes.

Therefore, it has been found that the presence of lithium ions in drinking water obtained from water softeners is rather harmful to health.

[Solution of the Problem and Configuration of the Invention 1 In the body, sodium and potassium must exist in a well-balanced manner. In addition to minimizing or reducing intake, it is necessary to increase potassium intake.Foods that contain potassium include meat, fish, vegetables, etc., but consuming large amounts of these requires a major change in eating habits. Also, taking potassium in drug form is complicated and often not done, making it difficult to be effective.

The inventor explored various ways to easily and effectively ingest potassium, and realized that it is best to include potassium in the water used for drinking and cooking. . In order to add potassium to drinking water and cooking water, it is easy to regenerate the cation exchanger in the water softener, which was conventionally used in the helium type, into a potassium type. It has been found that it is suitable to use a potassium ion-releasing electrolyte.

This invention was made based on such knowledge.

That is, the present invention provides a water softener regenerant comprising a potassium ion-releasing electrolyte.

As the ion-releasing electrolyte used in this invention, it is preferable to use salts of weak acids and strong acids, which are non-toxic and easily soluble in water, such as potassium-enriched potassium, (ηPotassium 1 acid, potassium nitrate, potassium phosphate,
Contains potassium monomonate, acid-resistant potassium l\, potassium tartrate, etc. tlrozzonorara, potassium chloride! \ is preferred.

When a water softener is used for a long period of time, rust and scale adhere to the cation exchanger inside the water softener and hinder ion exchange, but such iron rust and scale cannot be removed by using a regenerating agent consisting only of electrolytes. I can't. According to the present invention, it has been found that the above iron rust and scale can be efficiently removed by including a water-soluble oxidizing agent in the regenerating agent. With water-soluble oxidizing agents, alkali metal salts of peracids, such as sulfur or potassium percarbonate, and halogen salts, such as sodium hypochlorite, are used. A trace amount of the water-soluble oxidizing agent d is sufficient. Usually, the ratio of water-soluble oxidizing agent to potassium ion group 5-emitting electrolyte is 0.1:99.9 to 20:80.
and preferably 1:99 to 10:90.

In addition, the regenerant of the present invention may contain a binder, a preservative, a flavoring agent, a coloring agent, and the like.

The regenerating agent of the present invention may be in the form of powder or fine plasma, but is preferably formed into granules or tablets. The granules may have any shape such as rod-like, spherical, plate-like, or fragment-like, and their size is suitably about 5 to 2 Qmm in diameter. , fragments, etc., and the appropriate size is about 0°5 to 5 mm.

To produce granules, for example, a potassium ion-releasing electrolyte and a water-soluble oxidizing agent are mixed with a binder (guar gum, polyvinylpyrrolidone, etc.), kneaded with a volatile solvent, passed through a wire gauze, and the solvent is evaporated. The tablet is preferably disc-shaped;
The appropriate size thereof is about 5 to 20 mm in diameter. To manufacture tablets, the granules obtained by the above method are compressed using a pharmaceutical tablet machine.

To use the regenerating agent of this invention, dissolve a certain amount of WJ crude agent in water according to the part of the ion exchanger in a suitable hole, such as in the case of After passing through the ion exchange 1 layer of the container, wash with water. Pass? 'Discard the fJ solution and washing solution. Pass the regenerant solution through the ion exchanger layer A
In this case, it is desirable to pass the water in the same direction as the water passes during soft water production. In addition, the water softener τ is preferably one in which water is supplied from below the ion exchanger 1 and passes downward during water softening, and an lf adsorbent decoy such as activated carbon is applied to the co-supplied water before it passes through the ion exchanger layer. The ones that pass through are roughly θ
? :tl, yes.

[Effect] When the re-11-agent of this invention is used in a water softener cn'11t/+, the cation exchanger in the water softener becomes potassium l-1
Played in mold. Therefore, using this water softener,
Soft water containing potassium ions is extracted, and when this soft water is used for eating and drinking, potassium ions are ingested unconsciously. Therefore, when the regenerating agent of the present invention is used to regenerate water softeners, soft water 16, which is extremely beneficial for health, is obtained.

"Example] Examples of this invention will be shown below.

Example 1 Potassium chloride 94.9 parts
Mix 5 parts of guar gum (hydrate) well and add this mixture to guar gum (
The regenerating agent of this invention is kneaded with a 5-10% aqueous solution (0.1 parts), passed through a wire mesh, and dried to form small rod-shaped granules (
It was.

Fruit Color Example 2 The granules obtained in Example 1 were compressed into tablets with a diameter of 8 mm.
As a disc-shaped tablet, we obtain the regenerating agent of this invention! = .

Patent applicant Suisho-[Gyo Co., Ltd.

Claims (7)

[Claims] (1) A water softener regenerant comprising a potassium ion-releasing electrolyte. (2) The regenerant according to claim 1, wherein the potassium ion-releasing electrolyte is potassium chloride. (3) The re-4L agent according to claim 1 or 2, which further contains a water-soluble oxidizing agent. (4) The content ratio of the water-soluble oxidizing agent and the potassium ion-releasing electrolyte is 0.1:99.9 to 20:80.
A regenerating agent according to claim 3. (5) the water-soluble oxidizing agent is an alkali metal salt of a peracid;
The regenerating agent according to claim 3 or 4. (6) The regenerant according to claim 5, wherein the alkali metal salt of peracid is sodium percarbonate. (7) The regenerating agent according to any one of claims 1 to 6, which is formed into a granular tablet.