JP2007175688A - Artificial mineral water production method and its system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an artificial mineral water production method and its system which produce artificial mineral water by extracting and collecting commercial mineral material from various waste materials generated in various water treatment processes. <P>SOLUTION: When filtration processes in various water treatment apparatuses are regenerated, the amount of water consumption is greatly suppressed by selectively adopting a proper washing method, and substances useful for forming specific mineral components are extracted and collected. A reducing agent is mixed into the artificial mineral water, which protects the useful substances from an unnecessary precipitation, and enables cyclic use as artificial mineral components. Selection of sodium thiosulfate as the reducing agent enables supply of hydrogen sulfide, which is a mineral component, at the same time. Use of sodium ascorbate as the reducing agent, and addition of copper ions enable sterilization of the artificial mineral water at the same time. A commercial mineral material, which contains no easily oxidizable or reducible mineral material, in the various waste materials generated in the various water treatment processes is used as the artificial mineral component after forming hydrogencarbonates. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a method and a system for manufacturing artificial spa water extracted as a valuable spa component from a removal component derived in a water treatment process and the like and utilized as at least a part of constituent components.

  Conventionally, waste such as iron, manganese and other minerals and soil generated when treating groundwater to obtain purified water is often effective if it is within the drainage standards of the Sewerage Law or Water Pollution Control Law. It has been treated as wastewater without being used.

Natural spring sources are known as hot springs or mineral springs, but in particular in the field of artificial mineral springs, injection methods that mainly dissolve external components as effective mineral spring components, including the method of adding spring quality as a bathing agent to bathing water (for example, Patent Document 1) is known.
Other examples include a method of utilizing hardness components in water removed by an ion exchange resin (see, for example, Patent Document 2), a method of utilizing mineral content by extracting mineral resources from rocks and the like with chemicals (for example, And a method of injecting carbon dioxide gas into bathing water (for example, Patent Document 4).

All of these methods make artificial springs by adding the spring quality from the outside. However, in the case of mineral springs, if the spring quality is an ionic substance that is not subject to external oxidation, the spring quality will not change even if it is recycled, but the artificial spring that injects gas or the mineral spring that is easily oxidized In an artificial spring containing components, it is necessary to constantly replenish and add spring quality because of the lack of dissolved gas and the tendency to be oxidized.
Examples of the mineral spring that can be easily oxidized include divalent iron ions. Originally, it is stably present as divalent iron ions in underground water, but once the state changes, it is easily oxidized in the presence of oxygen or sodium hypochlorite used as a sterilizing and purifying agent, and is trivalent. Changes to iron ions.

Further, it is known that trivalent iron ions are precipitated as brown iron hydroxide or iron oxide in a pH range of 4 or higher. In order to re-dissolve the iron compound under these conditions, it is a hardly soluble substance to such an extent that it is only partially dissolved even by using means such as heating at a strongly acidic pH of 2 or less (preferably about pH 1). It becomes.
On the other hand, as examples of discharge of excluded substances, there are waste materials containing a large amount of valuable concentrated substances that can be effectively used as the above-mentioned mineral spring components in various water treatment processes. For example, an iron compound can be used as a backwash closure material in a sand filtration process when treating groundwater or a backwash closure material discharged in a membrane filtration process in advanced treatment. In groundwater, iron is normally present in the form of divalent iron ions, but when pumped, it moves to the oxidation zone, and when it is injected with sodium hypochlorite as a treatment agent, it is easily oxidized and trivalent iron ions. To change.

Usually, the pH of deep groundwater is 5.8 to 8.6, and the iron in this region is generally already oxidized and exists as brown iron hydroxide or iron oxide as described above. It can be removed by sand filtration or membrane filtration process of advanced water treatment.
There are useful substances that can be used as the spring quality of artificial springs in the concentrated waste that is generated when groundwater is treated to obtain purified water (for example, see Non-Patent Document 1). If it can be supplied in a dissolved state, it becomes possible to provide an artificial spring containing a plurality of spring qualities.

JP 2003-102802 A JP 2003-53340 A JP 2005-124898 A JP-A-7-313856 Mineral Spring Analysis Method Guidelines (Revised) 1-P. 2 March 2002 Ministry of the Environment, Natural Environment Bureau

When groundwater is filtered to obtain purified water, backwashing is performed against clogging of the sand filtration layer due to filtration residue, etc., and the filtration function is restored. The purpose of backwashing is to reduce and maintain the amount of solids contained in the filtered feed water to a certain assumed state, and a considerable amount of closure material is generated in the filtration layer. This also applies to other processes having such a function, for example, a membrane filtration process for performing advanced treatment. In particular, unless otherwise noted, these closures are usually treated as mere waste.
Artificial springs that dissolve easily oxidized mineral spring components need to constantly supply or add spring quality, especially with iron compounds, if they are not solutions with a pH of 2 or less, they will precipitate and the quality of the spring will be constant. The water is not recyclable and reused as bath water.
If an iron compound to be treated as mere waste is dissolved and can be provided as an artificial spring having a pH of 4.0 to 5.0, it can be used for effective utilization of valuable materials.

On the other hand, there are many types of groundwater with high hardness, and when these are used as bath water, the foaming of detergent tends to be poor. This is because the detergent and the hardness component react to form a metal soap, which may remain on the skin, block pores, inhibit skin metabolism, and cause dryness and roughness of the skin.
As countermeasures for hard water, means for softening groundwater is used, and many methods for utilizing this treated water as bath water have been reported. However, although valuables are included in the regeneration process discharged in this water softening process, it is treated as a simple waste.

In these reclaimed wastewater, there are water hardness components such as calcium and magnesium, and these are not defined alone in the quality of the spring, but they are calcium carbonate or magnesium carbonate that is defined in the mineral spring as a bicarbonate. It can be a hydrogen salt spring.
Soft water can be used as rising water or hot water for hot water, etc. On the other hand, if it is possible to provide mineral water composed of calcium or magnesium hydrogen carbonate as bath water, it will not be used in the past and will become waste. It can be used effectively as a valuable material.

Based on such a viewpoint, the main object of the present invention is to extract a valuable substance from an unnecessary substance such as a backwash closure material generated when, for example, groundwater is processed to obtain purified water, and to include artificial springs containing a plurality of spring qualities. It is in providing the manufacturing method and its system of a mineral spring water.
To this end, in the process of treating water and producing treated water, on the one hand, valuable materials are taken out from the concentrate containing abundant minerals and used as artificial springs, and on the other hand, it is necessary to regenerate the equipment. Achieving low cost by reducing the amount of water to be treated and artificial mineral springs containing hydrogen carbonate using water hardness components such as calcium and magnesium contained in concentrated water of reverse osmosis membranes and regenerated liquids of soft water devices Can be used as.

  As another object of the present invention, the artificial spa production device is equipped with a reducing agent injection device and a potentiometric titration device, and the reducing substance concentration in the artificial spa is controlled to be constant, and the pH and water temperature in the artificial spa are controlled to be constant. In addition, it is to manage the spa valuable material which is easily oxidized automatically in a stable state and supply it as bath water. At the same time, by monitoring total organic carbon and total nitrogen, it can be used as a comprehensive bath water circulation monitoring system that controls the contamination of bath water, maintains a certain level of hygiene, and freely controls spring quality. In the point.

The present inventors have conducted intensive research in order to achieve the above-mentioned object from such a viewpoint, and constructed an artificial spa manufacturing system that can effectively use by-products in various processing steps that have been targeted only as waste in the past. It has been confirmed that the present invention can be achieved. By-product substances mentioned here include, for example, abundant mineral components generated by sand filtration, membrane filtration, reverse osmosis membrane filtration, electrodialysis membrane, ion exchange, etc., which are generated in the process of producing public bath water, purified water, etc. It refers to valuable substances obtained by dissolving or extracting concentrated water.
The gist of the present invention is to adjust the bath water by extracting and collecting mineral valuable materials from waste materials derived in various water treatment processes when the composition of the artificial mineral water using the mineral spring components as the first invention. The present invention provides a method and system for manufacturing artificial mineral water characterized by preferential use and reduction of waste load.

  Mineral spring materials referred to in the present invention include free carbon dioxide, lithium ions, strontium ions, barium ions, copper ions and compounds, iron ions and iron compounds, manganese ions and manganese compounds, aluminum ions and aluminum compounds, hydrogen ions, bromides Hardness components such as ions, iodide ions, fluoride ions, sodium hydrogen carbonate ions, calcium and magnesium, sulfate ions, chlorine ions and the like.

In the second invention, when the water treatment process in the first invention purifies the groundwater to produce drinking water, the mineral valuable material is extracted from the filter closure material in the sand filtration process and / or the membrane filtration process. It is in the manufacturing method and system of the artificial mineral water which collects and adjusts bath water.
The filter closure material referred to here refers to clogged solid matter discharged at this time in order to recover the function of the filtration material in the filtration process, and the SS content contained in the filtration supply water is constant. In order to reduce and maintain the estimated state, a considerable amount of closure material is generated in the filtration layer. This also applies to other processes having such a function, for example, a membrane filtration process for performing advanced treatment.

According to a third aspect of the present invention, there is provided a method and system for producing artificial mineral water characterized by incorporating a filtration step in which chemical washing means is provided in addition to backwashing with water as the treatment means for the filter closure material.
In the water treatment, a large amount of treated water is consumed when a backwash process is employed. In some cases, it leads to waste of treated water, but it is preferable to extract and recover valuable substances by substituting this with chemical treatment.
That is, for example, in the case of backwashing using treated water in the sand filtration step, the backwash water is filtered through a thread-wound filter or the like and returned to the raw water tank, and the performance of the thread-wound filter is recovered directly by acid or alkali. If an acid and a reducing agent are injected at the same time, it is preferable to reduce and dissolve and extract iron ions such as iron hydroxide or iron oxide which are very difficult to dissolve.

In addition, if the sand filtration process is not back-washed with treated water, the treatment performance can be recovered directly by acid or alkali, or iron hydroxide or iron oxide that is very difficult to dissolve by injecting acid and reducing agent at the same time. It can be reduced to divalent iron and dissolved and extracted.
The acid referred to here refers to an acid such as sulfuric acid, hydrochloric acid, citric acid, and carbonic acid, the alkali refers to sodium hydroxide, and the bobbin filter refers to a bobbin filter made of, for example, polypropylene or polystyrene.
Examples of the reducing agent include reducing agents such as sodium thiosulfate, sodium sulfite, sodium ascorbate, and sodium oxalate. When the occlusive material contains an iron compound, regeneration is preferably performed using an acidic solution, and sodium thiosulfate is used in combination as a reducing agent.
In particular, when the membrane filtration step in the advanced treatment is regenerated, it is preferable to recover the valuable substance by performing chemical treatment with any one or combination of the above acid, alkali and reducing agent without performing backwashing.

The fourth invention utilizes mineral components generated from reclaimed water in the softening process of groundwater ion-exchange resin to collect valuable mineral materials, and further maintains the pH of the bath water at 7.0 or less. It exists in the manufacturing method and system of the artificial mineral water which melt | dissolves carbon and provides as water for bathtubs containing hydrogencarbonate.
When water is softened with ion exchange resin or the like, soft water is used as the water for raising water, and carbon dioxide is dissolved while maintaining the pH of water containing the hardness component generated at the time of regeneration of the water softener. It can be provided as water for bathtubs containing a large amount of bicarbonate.
Moreover, when processing by a reverse osmosis membrane or an electrodialysis membrane, it can provide as water for bathtubs which melt | dissolve a carbon dioxide and hold | maintain much hydrogencarbonate, maintaining the pH of concentrated water at 7.0 or less.

  The fifth invention is an artificial spa manufacturing system in which a bathtub and an adjustment tank, a flow path for circulating water in the bathtub and the water in the adjustment tank, a circulation means for forcibly circulating these waters, An artificial spa comprising a filtering means for performing removal, an oxidizing or reducing agent injection device and a potentiometric titration device, and having means for controlling the concentration of oxidizing or reducing agent in the artificial spring constant, an acid or alkali injection device and a pH device There is provided a method and a system for producing artificial mineral water characterized by having a means for uniformly controlling the pH and water temperature of the water and a function of analyzing the total organic carbon and total nitrogen of the entire circulating water.

For example, when substances that easily oxidize are contained in the spring quality, a reducing agent injection device and potentiometric titration device are provided to maintain a constant concentration of the reducing material in the artificial spring, enabling circulation, and removing bacteria with a membrane filter Can be recycled.
In addition, if the spring quality does not contain substances that easily oxidize, adjust the pH while adding alkali to form a bicarbonate by aeration in the bath water and inject the oxidant into the circulating bath pumping The artificial mineral spring sterilized by decomposing and sterilizing human-derived organic substances contained therein and removing the oxidizing agent with activated carbon before supplying to the bathtub and then performing membrane filtration can be supplied to the bathtub.

  The sixth invention is a method and system for producing artificial spa water characterized in that hydrogen sulfide is generated by using sodium thiosulfate as a reducing agent as an artificial spa manufacturing system to control the pH of the artificial spa acidic. It is in.

The seventh invention is an artificial mineral water system characterized by further interposing a copper compound when the reducing agent is employed in the fifth invention.
The copper compound mentioned here refers to a substance such as copper, copper sulfate, copper chloride, etc., and is preferably in the concentration range of 1 to 20 mg / L of the copper compound. As the reducing agent, it is preferable to use sodium ascorbate, sodium oxalate, or the like.
In the present invention, various treatment processes include water treatment processes such as water for public baths, purified water for drinks, miscellaneous water, industrial water, pure water, ultrapure water, specifically sand filtration, membrane filtration, reverse osmosis. Targeting closure materials for membrane filtration, electrodialysis membrane, ion exchange, etc.

The present invention makes it possible to provide an artificial spa that effectively uses concentrated water containing abundant mineral components generated in a water treatment process that has not been focused on in the past.
In the water treatment process, the amount of water used in the treatment process of treated water can be greatly reduced, improving water treatment costs, and using mineral resources from mineral waste derived from various water treatment processes. Extracted and collected and used preferentially for the adjustment of artificial mineral bath water, and the waste load can be reduced, so that the mineral components can be stably circulated without deterioration.
In hot springs, many efforts are being made to preserve the original effects of hot springs and mineral springs, such as the problem of depletion of natural resources and the generation of harmful bacteria. . Such a trend is expected to become more and more intense in the future, and there is a demand for artificial spa orientation that is close to natural origin.
The present invention that directly meets such a demand is to provide an artificial mineral spring that can always keep the spring concentration at a constant level, and it is believed that the effects of the present invention are industrially significant.

Hereinafter, embodiments of the present invention will be described with reference to FIGS.
FIG. 1 is a flow sheet showing a typical example created based on a standard process for purifying normal well water to drinking water. Further, FIG. 1 shows a method for producing artificial spa water that is extracted as a valuable spa component from a removed component derived in a water treatment process and utilized as part of the quality of the spa, and a flow sheet of the system. .

That is, the groundwater in the well (W) is pumped through the raw water supply line 1 (L-1.1) by the well pump (P-1.1), and the oxidant tank 1 (12% sodium hypochlorite solution is filled) From T-1.1), it was injected in-line into groundwater through an oxidant injection line (L-1.2) and supplied to the raw water tank (T-1.2). Raw water is supplied to the upper part of the sand filtration tower (SF) through the raw water supply line 2 (L-1.3) by the raw water pump 1 (P-1.2), and treated water is obtained from the lower part.
Next, it is supplied to the membrane module (MM) through the filtered water supply line (L-1.4), and the membrane filtered water is stored in the treated water tank (T-1.3) through the membrane filtered water supply line (L-1.5). did. The stored treated water is supplied as drinking water through the treated water supply line 1 (L-1.6) by the treated water supply pump (P-1.3) when the water level of the water storage tank (T-1.4) decreases. It is what you use.

Hereinafter, the first embodiment will be described in detail using the example of FIG.
After passing 6,000 L of raw water, the raw water pump 1 (P-1.2) is stopped, the valve of the return circuit only is opened, and the washing water supply pump (P-1. Through 4), through the washing water supply line (L-1.7), treated water was passed through the lower part of the sand filtration tower (SF) at 10 L / min to start regeneration.
Washing water containing mineral minerals at a high concentration is supplied from the top of the sand filtration tower (SF) to the washing water return line 1 (L-1.8), the spool filter (F-1.1), and the washing water return line 2 ( L-1.9), the washing water return line 3 (L-1.10), and the washing water return line 4 (L-1.11) were transferred to the raw water tank (T-1.2).

  After 100 L of washing water has passed, stop the washing water supply pump (P-1.4), operate the circulation pump 1 (P-1.5), and wash the raw water from the raw water tank (T-1.2). Return line 4 (L-1.11), Extraction line 1 (L-1.12), Wash water return line 1 (L-1.8), Wash water return line 2 (L-1.9), Extraction line Through 2 (L-1.13), 10 L of raw water was stored using the circulation tank 1 (T-1.5) as a cushion tank, and the circulation pump 1 (P-1.5) was stopped.

Circulation pump 1 (P-1.5) is operated again, washing water return line 1 (L-1.8), washing water return line 2 (L-1.9), washing water return line 3 (L-1 10), the extraction chemical solution was injected while the raw water was circulated through the pipeline of the extraction line 1 (L-1.12).
That is, from the reducing agent tank 1 (T-1.6) filled with a 1% sodium thiosulfate solution, the reducing agent injection line 1 (L-1.14) is passed through the reducing agent injection pump 1 (P-1.6). The reducing agent was injected in-line. Also, sulfuric acid was injected from a sulfuric acid tank 1 (T-1.7) filled with 98% sulfuric acid via a sulfuric acid injection pump 1 (P-1.7) via a sulfuric acid injection line 1 (L-1.15). . The obtained mineral spring extract showed a reducing agent concentration of 48 mg / L and pH 3.0.

  The mineral spring extract is circulated and extracted from the above pipeline for 5 minutes and stored in the circulation tank 1 (T-1.5) in the circulation system and as a cushion via the circulation pump 1 (P-1.5). Extract the valuable extract from the extraction line 2 (L-1.13), the washing water return line 3 (L-1.10), the extraction line 1 (L1.12), and the washing water return line 1 (L-1.8). ), 15 L was supplied to the artificial spring source tank (T-1.8) via the artificial spring source supply line 1 (L-1.16), and the circulation pump 1 (P-1.5) was stopped.

  Next, the raw water is again returned from the raw water tank (T-1.2) through the circulation pump 1 (P-1.5) to the washing water return line 4 (L-1.11), the extraction line 1 (L-1.12), Raw water is supplied to the circulation tank 1 (T-1.5) through the washing water return line 1 (L-1.8), the washing water return line 2 (L-1.9), and the extraction line 2 (L-1.13). 10 L was stored, and circulation pump 1 (P-1.5) was stopped. After the circulation of the extraction route for 1 minute as in the extraction process, 15 L of the cleaning liquid is supplied to the artificial spring source tank (T-1.8) in the same manner as the mineral valuables extract, and the circulation pump 1 (P-1.5) is supplied. Stopped. This artificial mineral source has a pH of 4.1. The iron concentration was 0.9 g / L and the manganese concentration was 30 mg / L.

  Through the artificial spring source supply pump 1 (P-1.8), the source is filtered through the artificial spring source supply line 2 (L-1.17) to the filter (F-1.2), and the artificial spring 20L. Was stored in the adjustment tank 1 (T-1.9). In addition, 480 L was supplied to the adjustment tank 1 (T-1.9) from the sand filtration treated water supply line 2 (L-1.18) and mixed with the artificial mineral spring source.

Controller that measures pH, water temperature, reducing agent concentration, TOC, TN with pH meter 1 (M-1.1), potentiometric titrator (M-1.2), and TOC / TN meter (M-1.3) According to (C), the reducing agent concentration is 1 mg / L or more, pH 4.5. The water temperature was controlled at 40 ° C. Adjustment of each condition was performed as follows.
(1) Reducing agent: From the reducing agent tank 2 (T-1.10) filled with 1% sodium thiosulfate solution, through the reducing agent injection line 2 (L-1.19), the adjustment tank 1 (T-1.9). ).
(2) pH: Adjusting tank 1 (T-1.9) from a sodium hydroxide tank 1 (T-1.11) filled with a 10% sodium hydroxide solution through a sodium hydroxide supply line (L-1.20). ).
(3) Water temperature: Three-way valve (V) via artificial spring circulation line 1 (L-1.21) and artificial spring circulation line 2 (L-1.22) via artificial spring circulation pump 1 (P-1.9) When the water temperature is low, it is supplied to the boiler (H) via the artificial spa heating line 1 (L-1.23), and when it is high, the water temperature is supplied to the artificial spa circulation line 3 (L-1.24). Adjusted.
(4) (4) TOC: The TOC of a newly prepared artificial spring was measured, and it was decided to replace the TOC when it was increased by 200 mg / L compared to the TOC for each day of use. (5) TN: The TN of a newly prepared artificial spring was measured, and the TN was replaced when it was increased by 50 mg / L compared with the TN for each day of use.

The adjusted artificial spring is filtered through the artificial spring supply line (L-1.25) via the artificial spring supply pump 1 (P-1.10) and passed through the membrane filter (F-1.3), and the bath (BT ). After the artificial spring removed the hair with the hair catcher (HC) through the artificial spring return line (L-1.26) via the artificial spring circulation pump 1 (P-1.9) and adjusted the water temperature, the adjustment bath 1 ( Returned to T-1.9).
This artificial spa had a pH of 4.6, an iron concentration of 38 mg / L, a total sulfur of 1.2 mg / L, and an evaporation residue of 1143 mg / L.
These use valuable materials obtained from unnecessary materials such as backwash closure materials generated when treating groundwater to obtain purified water, and provide a method and system for producing artificial mineral spring water containing multiple spring qualities. The effect of the present invention can be confirmed by this result.

  FIG. 2 is an apparatus for extracting mineral resources in a groundwater treatment system. The treatment from the raw water tank (T-1.2) to the filtered water supply line (L-1.4) in the drinking water treatment process shown in FIG. 1 was replaced with an alternative process. The obtained artificial mineral spring source was transferred from the artificial mineral spring source supply line 1 (L-1.16) to the artificial mineral spring source tank (T-1.8).

Groundwater treated in the same manner as in Example 1 was stored in the raw water tank (T-1.2) through the raw water supply line 1 (L-1.1). Through the raw water pump 2 (P-2.1), 1,000 L of raw water is passed through the raw water supply line 3 (L-2.1) and the raw water supply line 4 (L-2.2), and the spool filter 1 (F-2). To 1).
The obtained treated water was transferred to the next advanced treatment process via the treated water supply line 2 (L-2.3) and the filtered water supply line (L-1.4). In addition, after supplying 1,000 L of raw water, the raw water supply is changed from the raw water supply line 4 (L-2.2) to the raw water supply line 5 (L-2.4), and the spool filter (F-2.2) The treated water was obtained through the treated water supply line 4 (L-2.5).

  Next, the raw water is extracted from the raw water tank (T-1.2) through the circulation pump 2 (P-2.2), the raw water supply line 6 (L-2.6), the extraction line 3 (L-2.7), and the extraction. Line 4 (L-2.8), pincushion filter 1 (F-2.1), extraction line 5 (L-2.9), extraction line 6 (L-2.10), extraction line 7 (L-2) .11), 10 L of raw water was stored using the circulation tank 2 (T-2.1) as a cushion tank via the extraction line 8 (L-2.12), and then the circulation pump 2 (P-2.2) was stopped. .

The circulation pump 2 (P-2.2) is operated again, and the extraction line 3 (L-2.7), the extraction line 4 (L-2.8), the bobbin filter 1 (F-2.1), and the extraction line 5 (L-2.9), extraction line 6 (L-2.10), extraction line 7 (L-2.11), the extraction chemical | medical solution was inject | poured, circulating raw | natural water.
That is, the reducing agent injection line 3 (L-2.13) is supplied from the reducing agent tank 3 (T-2.2) filled with 1% sodium thiosulfate solution through the reducing agent injection pump 2 (P-2.3). Then, the chemical solution was injected in-line, and sulfuric acid injection line 2 (L-2.14) from sulfuric acid tank 2 (T-2.3) filled with 98% sulfuric acid via sulfuric acid injection pump 2 (P-2, 4). After that, the drug solution was similarly injected. This extraction solution had a reducing agent concentration of 46 mg / L and pH 4.0.

After circulating for 5 minutes in the extraction pipeline, extract the mineral valuables extract stored in the circulation tank 2 (T-2.1) as a cushion and as a cushion via the pump 2 (P-2.2) 8 (L-2.12), extraction line 3 (L-2.7), extraction line 4 (L-2.8), spool filter 1 (F-2.1), extraction line 5 (L-2. 9) 20L was stored in the artificial spring source tank (T-1.8) through the extraction line 6 (L-2.10) and the artificial spring source supply line (L-1.16).
Then, again, from the raw water tank (T-1.2), the raw water supply line 6 (L-2.6), the extraction line 3 (L-2.7), the extraction line 4 (L-2.8), and the bobbin filter 1 (F-2.1), extraction line 5 (L-2.9), extraction line 6 (L-2.10), extraction line 7 (L-2.11), extraction line 8 (L-2.12) ), 10 L of raw water was stored in the circulation tank 2 (T-2.1), the inside of the extraction pipe was circulated and washed, and 20 L was supplied as a washing liquid to the artificial mineral source tank (T-1.8).
When this source was analyzed, an artificial mineral source having a pH of 4.7, an iron concentration of 142 mg / L, and a manganese concentration of 13 mg / L was obtained, confirming the effects of the present invention.

  FIG. 3 shows membrane filtration cleaning and extraction of spa valuable materials in a groundwater treatment system. The process from the raw water tank (T-1.2) to the membrane filtrate supply line (L-1.5) in the drinking water treatment process shown in FIG. 1 was replaced. The obtained artificial spa source was supplied to the artificial spa source tank (T-1.8) from the artificial spa source supply line 1 (L-1.16).

  Groundwater treated in the same manner as in Example 1 was stored in the raw water tank (T-1.2) via the raw water supply line 1 (L-1.1). The raw water is supplied to the lower part of the membrane module (MM) through the raw water supply line 7 (L-3.1) and the raw water supply line 8 (L-3.2) via the raw water pump 3 (P-3.1), and the upper part The treated water was obtained through the treated water supply line 5 (L-3.3) and the membrane filtrate water supply line (L-1.5). This treated water was stored in a treated water tank in the same manner as in Example 1 and supplied as drinking water.

After passing 1,000 L of treated water, the supply is stopped, and the raw water is supplied to the raw water supply line 7 (L-3.1) and the raw water supply line 8 (L-3.2) through the circulation pump 3 (P-3.2). 10 L of the circulation tank 3 (T-3.1) is stored as a cushion tank through the primary side of the membrane module (MM), the extraction line 9 (L-3.4), and the extraction line 10 (L-3.5). The raw water pump 3 (P-3.1) was stopped.
Next, the extraction line 11 (L-3.6), the raw water supply line 8 (L-3.2), the membrane module (MM), and the extraction line 9 (L-3.L) are passed through the circulation pump 3 (P-3.2). 4) Raw water was circulated through the route of the extraction line 12 (L-3.7), and the extracted chemical solution was injected in-line.
That is, the reducing agent injection line 4 (L-3.8) is supplied from the reducing agent tank 4 (T-3.2) filled with 1% sodium thiosulfate solution through the reducing agent injection pump 3 (P-3.3). Then, the mixture was injected from a sulfuric acid tank 3 (T-3.3) filled with 98% sulfuric acid through a sulfuric acid injection pump 3 (P-3.4) and a sulfuric acid injection line 3 (L-3.9). This extract had a reducing agent concentration of 35 mg / L and pH 4.7.

  After circulating the extraction path for 5 minutes, the atmosphere open line (L-3.10) is opened, and the circulation tank 3 (T-3.1) is used as a cushion in the circulation system and as a cushion via the circulation pump 3 (P-3.2). Mineral spring extract, extraction line 11 (L-3.6), extraction line 9 (L-3.4), membrane module (MM), raw water supply line 8 (L-3.2), extraction 30 L of artificial mineral springs are stored in the artificial mineral spring tank (T-1.8) via the line 11 (L-3.6) and artificial mineral spring supply line 1 (L-1.16), and the circulation pump 3 (P- 3.2) was stopped.

Next, the raw water pump 3 (P-3.1) was operated again, and raw water was supplied to the membrane module (MM) primary side and the circulation tank 3 (T-3.1) in the same manner as the extraction step. When the cleaning liquid was supplied, the raw water pump 3 (P-3.1) was stopped, and the circulation pump 3 (P-3.2) was operated to circulate and wash the inside of the extraction path for 1 minute.
As for the washing liquid, 30 L of the artificial mineral spring source was supplied to the artificial mineral spring source tank (T-1.8) through the artificial mineral spring source supply line 1 (L-1.16) in the same manner as the extract.
When this artificial mineral spring was analyzed, an artificial mineral spring having a pH of 4.0, an iron concentration of 0.5 g / L and a manganese concentration of 30 mg / L was obtained, and the effect of the present invention was confirmed.

FIG. 4 is a schematic diagram of the configuration of a water softener and a device that performs extraction adjustment of mineral valuable materials. The process up to the filtered water supply line (L-1.4) shown in FIG. The raw water is supplied to the upper portion of the water softener (WS) through the filtered water supply line (L-1.4), the raw water supply line 9 (L-4.1), and the raw water supply line 10 (L-4.2). From the bottom, 1,000 L of treated water (soft water) was obtained through the treated water supply line 7 (L-4.3) and the treated water supply line 8 (L-4.4).
The treated water can be used as bath water as it is, or it can be further treated and used as drinking water.

After passing 1,000 L of raw water, the raw water is circulated through the filtered water supply line (L-1.4), the raw water supply line 9 (L-4.1), and the circulation line 1 (L-4.5). (T-4.1) 10 L was stored and the raw water supply was stopped.
Next, 500 g of sodium chloride was added to the upper part of the water softener (WS) from the regenerant tank (T-4.2) via the snake pump (SP) through the regenerant supply line (L-4.6). Next, the regenerative liquid circulation pump (P-4.1) is operated, and the raw water supply line 10 (L-4.2), the raw water supply line 9 (L-4.1), and the circulation line 2 (L-4.7). And recirculating for 10 minutes.

  After completion of the regeneration, the regenerative liquid circulation pump (P-4.1) is stopped, and the sand filtrate is supplied to the filtered water supply line (L-1.4), the raw water supply line 9 (L-4.1), and the raw water supply line 10. (L-4.2), water softener (WS), treated water supply line 7 (L-4.3), and concentrated water supply line (L-4.8) were supplied. The obtained concentrated water transferred 200 L of treated water to the adjustment tank 2 (T-4.3) through the filter (F-4.1). Next, the blower (B) in the tank was operated, air was supplied to the air diffuser (AE) through the air supply line (L-4.15), and carbon dioxide was dissolved in the artificial mineral spring.

The pH, water temperature and residual chlorine concentration are measured with a pH meter 2 (M-4.1) and a residual chlorine meter (M-4.2). The controller (C) has a pH of 7.0 or less and a residual chlorine concentration of 0.1 mg. / L or more, and the water temperature was controlled at 40 ° C. Adjustment of each condition was performed as follows.
(1) Chlorine concentration: Added from an oxidant tank 2 (T-4.4) filled with a 12% sodium hypochlorite solution via an oxidant supply line (L-4.9).
(2) pH: Added from a sodium hydroxide tank 2 (T-4.5) filled with a 10% sodium hydroxide solution via a sodium hydroxide supply line (L-4.10).
(3) Water temperature: Artificial spring circulation pump 2 (P-4.2) is operated, and the artificial spring circulation line 4 (L-4.11) and artificial mineral circulation line 5 (L-4.12) are passed through a three-way valve ( V), if the water temperature is low, supply it to the boiler (H) via the artificial spring heating line 2 (L-4.13), if it is high, supply it to the artificial spring circulation line 6 (L-4.14) The water temperature was adjusted.

After adjusting for 1 hour, the artificial spring is passed through the artificial spring supply line 2 (L-4.16) via the artificial spring supply pump 2 (P-4.3), activated carbon (AC), membrane filter (F-4. Artificial spring was passed through 2), and treated water was supplied to the bathtub (BT).
The artificial spa is adjusted to the tank 2 after the hair is removed by the hair catcher (HC) through the artificial spring return line 2 (L-4.17) via the artificial spring circulation pump 2 (P-4.2) and the water temperature is adjusted. Returned to (T-4.3). This artificial spa was obtained as an artificial spa having a pH of 6.9, a total hardness of 520 mg / L, an M alkalinity of 360 mg / L, and an evaporation residue of 1310 mg / L.

  As a reducing agent, it changed to sodium ascorbate and adjusted the artificial spring source similarly to Example 1, and obtained 15L. Next, it was mixed with 200 L of treated water, and further 60 mL of 20 g / L copper sulfate was added manually, and the artificial mineral spring was circulated and adjusted in the same manner as in Example 1 to find pH 4.5, iron concentration 41 mg / L, copper 4.7 mg / L An artificial spring of L was obtained and the effect of the present invention was confirmed.

In the Example of this invention, it is the figure which represented typically the whole of the water distribution of a water treatment apparatus and an artificial spa purification system, and the artificial mineral spring quality management as an example. It is the figure which represented typically the extraction apparatus of the mineral valuable material in a groundwater treatment system as an example. It is a structure schematic diagram of the apparatus used in the Example of this invention which performs the washing | cleaning of membrane filtration, and extraction of a mineral valuable material. It is a structure schematic diagram of the apparatus which performs extraction adjustment of a water softener and mineral valuable material used in the Example of this invention.

Explanation of symbols

BT Bathtub C Controller H Boiler HC Hair catcher MM Membrane module SF Sand filtration tower V Three-way valve W Well F-1.1 Bobbin filter F-1.2 Filter F-1.3 Membrane filter L-1.1 Raw water supply Line 1
L-1.2 Oxidant injection line L-1.3 Raw water supply line 2
L-1.4 Filtrated water supply line L-1.5 Membrane filtered water supply line L-1.6 Treated water supply line 1
L-1.7 Wash water supply line L-1.8 Wash water return line 1
L-1.9 Wash water return line 2
L-1.10 Washing water return line 3
L-1.11 Wash water return line 4
L-1.12 Extraction line 1
L-1.13 Extraction line 2
L-1.14 Reducing agent injection line 1
L-1.15 Sulfuric acid injection line 1
L-1.16 Artificial spring source supply line 1
L-1.17 Artificial spring source supply line 2
L-1.18 Sand filtration treated water supply line 2
L-1.19 Reducing agent injection line 2
L-1.20 Sodium hydroxide injection line L-1.21 Artificial spring circulation line 1
L-1.22 Artificial spring circulation line 2
L-1.23 Artificial spring heating line 1
L-1.24 Artificial spa circulation line 3
L-1.25 Artificial spring supply line L-1.26 Artificial spring return line M-1.1 pH meter 1
M-1.2 Potentiometric titrator M-1.3 TOC / TN meter P-1.1 Well pump P-1.2 Raw water pump 1
P-1.3 Treated water supply pump P-1.4 Wash water supply pump P-1.5 Circulation pump 1
P-1.6 Reducing agent injection pump 1
P-1.7 Sulfuric acid injection pump 1
P-1.8 Artificial spring source supply pump 1
P-1.9 Artificial Spa Circulation Pump 1
P-1.10 Artificial spring supply pump 1
T-1.1 Oxidant tank 1
T-1.2 Raw water tank T-1.3 Treated water tank T-1.4 Water tank T-1.5 Circulation tank 1
T-1.6 Reductant tank 1
T-1.7 Sulfuric acid tank 1
T-1.8 Artificial mineral spring source tank T-1.9 Adjustment tank 1
T-1.10 Reducing agent tank 2
T-1.11 Sodium hydroxide tank 1
F-2.1 Spool filter 1
F-2.2 Bobbin filter 2
L-2.1 Raw water supply line 3
L-2.2 Raw water supply line 4
L-2.3 Treated water supply line 2
L-2.4 Raw water supply line 5
L-2.5 treated water supply line 4
L-2.6 Raw water supply line 6
L-2.7 Extraction line 3
L-2.8 Extraction line 4
L-2.9 Extraction line 5
L-2.10 Extraction line 6
L-2.11 Extraction line 7
L-2.12 Extraction line 8
L-2.13 Reducing agent injection line 3
L-2.14 Sulfuric acid injection line 2
P-2.1 Raw water pump 2
P-2.2 Circulation pump 2
P-2.3 Reducing agent injection pump 2
P-2.4 Sulfuric acid infusion pump 2
T-2.1 Circulation tank 2
T-2.2 Reductant tank 3
T-2.3 Sulfuric acid tank 2
L-3.1 Raw water supply line 7
L-3.2 Raw water supply line 8
L-3.3 Treated water supply line 5
L-3.4 Extraction line 9
L-3.5 Extraction line 10
L-3.6 Extraction line 11
L-3.7 Extraction line 12
L-3.8 Reducing agent injection line 4
L-3.9 Sulfuric acid injection line 3
L-3.10 Open air line P-3.1 Raw water pump 3
P-3.2 Circulation pump 3
P-3.3 Reducing agent injection pump 3
P-3.4 Sulfuric acid injection pump 3
T-3.1 Circulation tank 3
T-3.2 Reducing agent tank 4
T-3.3 Sulfuric acid tank 3
AE Air Diffuser AC Activated Carbon B Blower SP Snake Pump WS Water Softener F-4.1 Filter F-4.2 Membrane Filter L-4.1 Raw Water Supply Line 9
L-4.2 Raw water supply line 10
L-4.3 Treated water supply line 7
L-4.4 Treated water supply line 8
L-4.5 Circulation line 1
L-4.6 Regenerant supply line L-4.7 Circulation line 2
L-4.8 Concentrated water supply line L-4.9 Oxidant supply line L-4.10 Sodium hydroxide supply line L-4.11 Artificial spring circulation line 4
L-4.12 Artificial spring circulation line 5
L-4.13 Artificial mineral warming line 2
L-4.14 Artificial spa circulation line 6
L-4.15 Air supply line L-4.16 Artificial spring supply line 2
L-4.17 Artificial spring return line 2
M-4.1 pH meter 2
M-4.2 Residual chlorine meter P-4.1 Regenerative liquid circulation pump P-4.2 Artificial spring circulation pump 2
P-4.3 Artificial spring supply pump 2
T-4.1 Circulation tank 4
T-4.2 Regenerant tank T-4.3 Adjustment tank 2
T-4.4 Oxidant tank 2
T-4.5 Sodium hydroxide tank 2

Claims (7)

When constructing the water quality of artificial springs using mineral spring components, extract and collect valuable mineral materials from waste materials derived from various water treatment processes and use them preferentially for the adjustment of bath water, and reduce the waste load. A method and system for producing artificial mineral water characterized by the above. As the water treatment process, when purifying groundwater and producing drinking water, it is necessary to extract and extract mineral minerals from the filter closure material in the sand filtration process and / or the membrane filtration process and adjust the bath water. 2. The method and system for producing artificial mineral spring water according to claim 1 characterized by the above. The method and system for producing artificial mineral water according to claim 2, wherein a filtration step in which chemical washing means is provided in addition to backwashing with water is incorporated as the treatment means for the filter closure material. Utilizing the hardness component generated from the reclaimed water in the water softening process using the ion exchange resin of groundwater as the mineral spring valuable material, and further dissolving the carbon dioxide while maintaining the pH of the bath water at 7.0 or lower, the hydrogen carbonate 4. The method and system for producing artificial mineral water according to claim 1, wherein the water is provided as water for a bath containing salt. As an artificial spa manufacturing system, it has a tub and an adjustment tank, and has a flow path for circulating the water in the tub and the water in the adjustment tank. Means for controlling the oxidant or reducing agent concentration in the artificial spa with a filtration means for performing removal and an oxidizing or reducing agent injection device and a potentiometric titration device, an acid or alkali injection device and a pH device in the artificial spa The method for producing artificial mineral water according to claims 1 to 4, wherein a function of analyzing total organic carbon and total nitrogen in the entire circulating water is set in addition to means for controlling pH and water temperature uniformly system. The method and system for producing artificial mineral water according to claim 5, wherein sodium thiosulfate is used as the reducing agent, and hydrogen sulfide is generated by controlling the pH of the artificial mineral acid. 7. The method and system for producing artificial mineral water according to claim 5, wherein a copper compound is further interposed when the reducing agent is used.

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