JP2002066576A - Water treating apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a water treating apparatus where an objective water quality element can precisely be detected by a water quality detecting means even if the other water quality element affecting the detection result of the objective water quality element is changed, control can be performed based on the detected result and the precise detected result of water quality can be displayed. SOLUTION: A water treating part 4 processing raw water and a first detecting means 5 detecting the objective water quality information are arranged in a channel from a flow-in port 2 to a discharge port 3. At least one or more second detecting means 6 detecting different water quality information is installed. Then, a correcting means 7 correcting the detection value of the first detecting means 5 based on a detected result from the second detecting means 6 is also arranged.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water treatment apparatus for obtaining treated water such as purified water or electrolyzed water having a desired water quality by treating raw water, and more particularly, to accurately treating the quality of raw water or treated water. The present invention relates to a water treatment apparatus capable of detecting and performing control based on the detection result, and displaying the detection result.

[0002]

2. Description of the Related Art As a water treatment apparatus for purifying raw water or performing electrolysis to generate treated water such as purified water or electrolyzed water,
2. Description of the Related Art Conventionally, there is a type in which a water quality detection unit for detecting and controlling or displaying the quality of raw water or treated water is provided in a flow path from an inlet to an outlet.

[0003] Such a water treatment apparatus is disclosed in, for example, JP-A-6-182360. In this method, an ion electrode of calcium or the like is provided in a mineral water generator to control the amount of added mineral components. The electrode potential of such an ion electrode changes in accordance with the ion concentration according to the following Nernst equation (1). Therefore, it is necessary to measure the voltage generated between the ion electrode and the reference electrode. Thus, a change in the electrode potential of the ion electrode can be detected, and the concentration of calcium ions or the like can be measured.

E = E ₀ + 2.303 × R × T ÷ (n × F) × log (a) (1) E: electrode potential E ₀ : standard electrode potential R: gas constant T: absolute temperature n : Number of charge of ions F: Faraday constant a: Ion concentration However, as described above, the electrode potential represented by the Nernst equation is a function of temperature, and thus the electrode potential changes due to a change in water temperature. For this reason, the measured value changes due to a change in the water temperature even though the target ion amount is constant.

Although this ion electrode is excellent in the selectivity of a target ion, it is not necessarily unaffected by any coexisting ions. The potential may change. Such coexisting ions are called interfering substances.
For this reason, the measured value changes due to a change in the amount of interfering substances, even though the target ion amount is constant.

[0006] As described above, in the technique described in Japanese Patent Application Laid-Open No. 6-182360, among the elements such as water temperature and ion concentration that constitute water quality, changes in other elements than the specific element to be detected are caused. However, the detection result of a specific element fluctuates, and it becomes difficult to accurately detect water quality.Therefore, control is performed based on the detection result of accurate water quality, or the detection result of accurate water quality is determined. There is a problem that it becomes difficult to display.

Further, as a conventional water treatment apparatus, there is one disclosed in JP-A-6-254559. In this method, a calcium ion detector is provided in an electrolyzed water generator, and the presence or absence of a calcium additive is detected and displayed.

Here, the carbonic acid component contained in the water is C
Although it exists in the state of O ₂ , HCO ₃ ⁻ , CHO ₃ ^2- etc., FIG.
As shown in (1), the abundance ratio of these fluctuates as the pH changes, and the state of the carbon component in the water changes. Therefore, when tap water contains a certain amount or more of a carbonic acid component, of the electrolyzed water generated by electrolysis, in alkaline water having a high pH, the following reaction formula (2)
As a result, calcium ions become calcium carbonate and precipitate, so that the total amount of calcium components does not change, but the amount of calcium ions dissolved in water decreases. At this time, the relationship between the pH value of the alkaline ionized water, the concentration of dissolved calcium ions, and the total calcium component concentration when the total calcium component concentration is 1 is as shown in FIG.

Ca ²⁺ + CO ₃ ^2- → CaCO ₃ ↓ (2) Therefore, as in the case of using a calcium ion electrode, a calcium ion detector which does not react with a precipitate of a calcium compound has a pH value of In high alkaline ionized water, the amount of calcium ion detected is smaller than the actual total calcium component due to the precipitation of calcium carbonate by the following reaction formula (2). As described above, it is difficult to accurately detect the total calcium component concentration depending on the state of calcium.

As described above, in the technology disclosed in Japanese Patent Application Laid-Open No. 6-254559, among the elements constituting water quality, the amount of calcium to be detected and the like are affected by the influence of other elements such as pH. Since the state changes, it is difficult for the water quality detection means to accurately detect the element of the target water quality.Therefore, control is performed based on the detection result of the accurate water quality, and There is a problem that it becomes difficult to display the detection result.

[0011]

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and an object of the present invention is to prevent a change in other water quality elements that affects the detection result of a target water quality element. Even if it occurs, a water treatment apparatus capable of accurately detecting a target water quality element with a water quality detection unit, performing control based on the detection result, and displaying an accurate water quality detection result is provided. Is to do.

[0012]

According to a first aspect of the present invention, there is provided a water treatment apparatus, comprising: a water treatment section for treating raw water in a flow path from an inlet to an outlet; The water treatment apparatus 1 provided with first detection means 5 for detecting water quality information to be provided, comprising at least one or more second detection means 6 for detecting other water quality information, and a second detection means And a correction means for correcting the detection value of the first detection means based on the detection result from the first detection means.

A second aspect of the present invention is characterized in that, in the first aspect, the first detecting means 5 comprises an ion electrode for detecting the concentration of a specific ion in water.

The invention of claim 3 is characterized in that, in claim 1 or 2, the second detecting means 6 detects pH.

A fourth aspect of the present invention is characterized in that, in any one of the first to third aspects, the second detecting means 6 detects a water temperature.

According to a fifth aspect of the present invention, in any one of the first to fourth aspects, the second detecting means 6 comprises the first detecting means 5.
In which an impurity which may be an error factor of the detection result is detected.

According to a sixth aspect of the present invention, in the fifth aspect, the first detecting means 5 comprises an ion electrode for detecting the calcium ion concentration in the water, and the second detecting means 6
As lead ion concentration, mercury ion concentration, hydrogen ion concentration, strontium ion concentration, iron ion concentration, copper ion concentration, sodium ion concentration, ammonium ion concentration, potassium ion concentration, lithium ion concentration, barium ion concentration, zinc ion concentration, magnesium The apparatus is characterized by comprising at least one or more detectors for detecting either the ion concentration or the silane ion concentration.

According to a seventh aspect of the present invention, in the fifth aspect, the first detecting means 5 comprises an ion electrode for detecting the concentration of sodium ions in water, and the second detecting means 6
As at least one of silver ion concentration, hydrogen ion concentration, lithium ion concentration, cesium ion concentration, potassium ion concentration, thallium ion concentration, rubidium ion concentration and ammonium ion concentration. It is a feature.

According to an eighth aspect of the present invention, in the fifth aspect, the first detecting means 5 comprises an ion electrode for detecting the concentration of potassium ions in water, and the second detecting means 6 comprises a cesium ion concentration and an ammonium ion concentration. It is characterized by comprising at least one or more detectors for detecting any one of concentration, thallium ion concentration, hydrogen ion concentration, silver ion concentration, silane ion concentration, lithium ion concentration and sodium ion concentration.

According to a ninth aspect of the present invention, in the fifth aspect, the first detecting means 5 is an ion electrode for detecting a chloride ion concentration in water, and the second detecting means 6 includes a hydroxide ion concentration and a sulfur ion concentration. Ion concentration, bromide ion concentration, iodide ion concentration, cyanide ion concentration, perchlorate ion concentration, nitrate ion concentration, sulfate ion concentration, hydrogen carbonate ion concentration, acetate ion concentration, fluoride ion concentration, thiosulfate ion concentration , And at least one for detecting any one of ammonia concentration.

According to a tenth aspect of the present invention, in the fifth aspect, the first detecting means 5 comprises an ion electrode for detecting a bromide ion concentration in water, and the second detecting means 6 comprises a sulfide ion concentration, iodine It is characterized by comprising at least one or more detectors for detecting any one of a chloride ion concentration, a cyanide ion concentration, a chloride ion concentration, and an ammonia concentration.

According to an eleventh aspect of the present invention, in the fifth aspect, the first detecting means 5 comprises an ion electrode for detecting a nitrate ion concentration in water, and the second detecting means 6 comprises a perchlorate ion concentration, Iodide ion concentration, chlorate ion concentration, cyanide ion concentration, bromide ion concentration, nitrite ion concentration, hydrogen sulfide ion concentration, carbonate ion concentration, hydrogen carbonate ion concentration, phosphate ion concentration, monohydrogen phosphate ion concentration, The apparatus is characterized by comprising at least one or more detectors for detecting any one of an acetate ion concentration, a fluoride ion concentration and a sulfate ion concentration.

According to a twelfth aspect of the present invention, in the fifth aspect, the first detecting means 5 comprises an ion electrode for detecting the concentration of nitrite ions in water, and the second detecting means 6 comprises an iodide ion concentration, Acetate ion concentration, bromide ion concentration, perchlorate ion concentration, fluoride ion concentration, sulfate ion concentration, bicarbonate ion concentration, chloride ion concentration,
It is characterized by comprising at least one or more detectors for detecting any of nitrate ion concentration, salicylic acid concentration, polyphosphate concentration, ascorbic acid concentration and lactic acid concentration.

According to a thirteenth aspect of the present invention, in the fifth aspect, the first detecting means 5 comprises an ion electrode for detecting a cyanide ion concentration in water, and the second detecting means 6 comprises:
At least one of which detects any one of a sulfide ion concentration, an iodide ion concentration, a bromide ion concentration, and a chloride ion concentration.

Further, the invention of claim 14 is the invention of claims 1 to 1
3. The method according to claim 3, wherein the second detection means 6 includes a color reagent for detecting water quality information by showing a color reaction or a test paper containing the color reagent. It is assumed that.

Further, the invention of claim 15 provides the invention according to claims 1 to 1
In any one of 4, the water quality display unit 11 that displays the detection result by the second detection unit 6 is provided, and the correction unit 7 is operated by performing a switching operation according to the display result displayed on the water quality display unit 11. It is characterized by comprising switching means 10 capable of setting a correction amount of the detection result of the first detecting means 5.

[0027] The invention of claim 16 is the invention of claims 1 to 1
5, the correction means 7 includes a correction operation unit 71 that derives a correction value of the detection result of the first detection means 5 based on the detection result of the second detection means 6 using a correction formula or a correction table. It is characterized by comprising.

[0028]

Embodiments of the present invention will be described below.

FIG. 1 shows a first embodiment. This embodiment uses a mineral water generator as the water treatment device 1. In the water treatment apparatus 1, a mineral water generation section 4 as a water treatment section 4 is provided in a housing 12 of the apparatus main body.
1 is provided. The water treatment unit 4 has a function of performing a predetermined treatment on the raw water to generate a treated water. In the present embodiment, the mineral water generation unit 41 generates mineral water by adding calcium ions or the like to the raw water. Things.
The downstream end of the raw water flow path 8 through which the raw water flows is introduced into the housing 12, and the downstream end of the raw water flow path 8 is connected to the water treatment unit 4. Here the raw water channel 8
The upstream end of the air inlet 2 is located outside the housing 12.
The inflow port 2 is connected to a water supply curan 13 as raw water supply means. Also, housing 1
2, an upstream end of a treated water flow passage 9 through which the treated water treated by the water treatment unit 4 flows is introduced, and the upstream end of the treated water passage 9 is connected to the water treatment unit 4. . Here, the downstream end of the treated water flow passage 9 is opened as the discharge port 3 outside the housing 12.

In the housing 12, a first detecting means 5, a second detecting means 6, and a correcting means 7 for correcting the detection value of the first detecting means 5 based on the detection result from the second detecting means 6. Are arranged. In the present embodiment, the first detecting means 5, the second detecting means 6, and the correcting means 7 are provided for detecting the calcium ion concentration in the treated water.

The first detecting means 5 is for detecting water quality information to be detected. In the example shown in the drawing, the first detecting means 5 is disposed in the middle of the treated water flow path 9. Here, the water quality information means information that defines a specific element among a plurality of elements such as the concentration, physical properties, and temperature of a dissolved substance constituting the water quality.
In the example shown in the figure, the first detecting means 5 includes a calcium ion electrode for detecting calcium ions in the treated water. That is, the first detecting means 5 includes a reference electrode and a calcium ion electrode whose electrode potentials are known, and measures the electrode potential of the calcium ion electrode based on an electromotive force generated between the reference electrode and the calcium ion electrode. It is something that uses something.

The second detecting means 6 detects another water quality information which affects the detection result of the water quality information detected by the first detecting means 5. Such other water quality information may include other water quality information, such as the concentration of an interfering substance such as an impurity that causes a measurement error in the first detection unit 5. In addition, the target water quality information,
In the case where the water quality information (related information) related to the water quality information is detected by measuring it with the first detecting means 5, another type of water quality information that changes the related information itself may be used. Such an example will be described in a third embodiment described later. In the illustrated example, a temperature measuring device such as a thermistor for measuring the temperature of the raw water is provided in the middle of the raw water flow path 8 as the second detecting means 6. The water temperature causing the measurement error of the electrode potential of the calcium ion electrode of the detecting means 5 is measured.

The correction means 7 is provided with a storage means for receiving the detection results from the first detection means 5 and the second detection means 6 and for temporarily storing the detection results, and a second storage means for storing the detection results. Calculating means for correcting the detection result by the first detection means 5 based on the detection results from the one detection means 5 and the second detection means 6; and output means for outputting the corrected detection result by the first detection means 5 And the corrected first detection means 5
And a control means for controlling the operation of the water treatment unit 4 based on the detection result by the correction calculation unit 71.

In correcting the detection result of the first detection means 5 by the correction calculation section 71, a correction calculation section having a calculation means for correcting the detection result of the first detection means 5 according to a correction formula or a correction table. 71 can be used. For example, a correction formula or a correction table is used to correct the detection result by the first detection means 5 based on the detection results from the first detection means 5 and the second detection means 6. Here, when the correction formula is used, the calculation means of the correction calculation unit 71 may be a computer such as a CPU including a storage medium storing a computer program and a calculation circuit for performing a calculation according to the computer program, or a fixed calculation. It can be configured by providing a logic circuit or the like for performing processing. When the correction table is used, the calculation means of the correction calculation unit 71 is referred to as a storage unit (correction storage unit) storing the correction table, a storage medium storing a computer program, and referring to the correction table according to the computer program. And a computer such as a CPU configured with an arithmetic circuit that performs an arithmetic operation.

In the water treatment apparatus 1 configured as described above, raw water flows from the inlet 2 through the raw water flow path 8 to the water treatment section 4.
(Mineral water generation unit 41), subjected to a treatment such as addition of a mineral component such as calcium ions in a water treatment unit 4, and supplied as treated water from a discharge port 3 through a treated water flow path 9. It has become. In such a water treatment process, the raw water is measured by the second detecting means 6 while flowing through the raw water flow path 8, and the treated water is further processed by the first detecting means 5 while flowing through the treated water flow path 9. The calcium ion concentration (electrode potential of the calcium ion electrode caused by the calcium ion concentration) is measured. The measurement results of the water quality information by the first detection means 5 and the second detection means 6 are input to the correction operation unit 71, and the water quality information (calcium ion concentration or calcium ion concentration The electrode potential of the calcium ion electrode to be adjusted is corrected, and the operation of the water treatment unit 4 such as the amount of added calcium is controlled based on the corrected detection result of the first detection unit 5. Thereby, the operation of the water treatment unit 4 is controlled based on the accurate water quality information, and the treated water having a constant water quality can be generated. Further, the detection result by the first detection means 5 after correction output from the correction means 7, that is, accurate water quality information can be visually displayed by any means such as a liquid crystal display or a light emitting lamp.

An example of the operation of correcting the detection result of the first detection means 5 in the correction operation section 71 in the above-described apparatus configuration will be described.

First, an example of the correction operation section 71 for correcting the detection result of the first detection means 5 according to a correction equation will be described.

According to the Nernst equation shown in the above equation (1), when the calcium ion concentration A _{Ca in} water is constant,
Assuming that the electrode potentials of the calcium ion electrodes at the water temperatures t ₁ and t ₂ are E ₁ and E ₂ , respectively, the electrode potentials E ₁ and E ₂ are represented by the following equations (3) and (4). In the following equation, the unit of the electrode potential is converted to mV, and the temperature is converted to Celsius.

E ₁ = E ₀ + (27.1 + 0.1 × t ₁ ) × log (A _Ca ) (3) E ₂ = E ₀ + (27.1 + 0.1 × t ₂ ) × log ( A _Ca ) (4) Therefore, the following equation (5) is provided between the electrode potentials E ₁ and E _2.
A difference ΔE is generated.

ΔE = E_Two-E₁= 0.1 × (t_Two-T₁) × (E₁-E₀) ÷ (27.1 + 0.1 × t)₁) (5) Such a change in electrode potential causes a change in temperature.
Can not be measured accurately
It becomes. Therefore, the following complement derived from Nernst's equation
Based on the formula (6), the detection result E of the electrode potential
Standard electrode potential E ₀And water measured by the second detecting means 6
From temperature t to calcium ion concentration A_caCorrection operation to derive
When the unit 71 is used, the first detecting means 5
Accurate calcium ion
The concentration can be derived.

A _ca = 10 exp {(E−E ₀ ) + (27.1 + 0.1 × t)} (6) Next, as the correction operation unit 71, the detection result of the first detection unit 5 according to the correction formula A description will be given of another example of the correction of. In this example, the electrode potential E detected by the first detecting means 5 is converted into an electrode potential E ′ at a predetermined temperature (in this example, 25 ° C.), and the calcium ion concentration is calculated from the electrode potential E ′. Is derived.

Here, it is first assumed that the calcium ion concentration in the treated water is in the range of 1 to 100 mg / L.
A calcium ion concentration of 10 mg / L, which is an intermediate concentration, is used as a reference for concentration correction. In this case, the difference Δe (mV) between the measurement result of the electrode potential at the first detection means 5 at 25 ° C. and the electrode potential at t ° C. is based on Nernst equation (1), It is derived as in 7).

Δe = 9.0−0.36 × t (7) According to the equation (7), the electrode potential E at the first detecting means 5 at t ° C. is corrected to the electrode potential E ′ at 25 ° C. Equation (8) is derived as follows.

E ′ = E−Δe (8) Based on the electrode potential E ′ at 25 ° C., the calcium ion concentration A _ca is obtained from the following equation (9) derived from the Nernst equation.

A _ca = 10 exp {(E′−E ₀ ) + (27.1 + 0.1 × 25)} (9) Therefore, the above equations (7) to (9) are used as correction equations, and Based on the correction formula, the detection result E of the electrode potential, the known standard electrode potential E ₀ and the water temperature t measured by the second detection means 6
_Therefore , if the correction operation unit 71 for deriving the calcium ion concentration A _ca is used, it is possible to derive an accurate calcium ion concentration even if the detection result by the first detecting means 5 fluctuates due to a change in water temperature. .

Next, a description will be given of a correction operation section 71 for correcting the detection result of the first detection means 5 according to a correction table.

In this example, a value specified for each predetermined temperature range in the correction table is used as Δe instead of Δe derived in the above equation (7), whereby the above equation (8) is obtained. A correction operation unit 71 for deriving the calcium ion concentration from (9) is used. As such a correction table, as shown in Table 1 below, a table in which the water temperature detected by the second detecting means 6 is associated with the value of Δe can be used. Note that a to e in the table represent specific numerical values.

[0048]

[Table 1]

FIG. 2 shows a second embodiment. In this embodiment, the second detecting means 6 is disposed on the downstream side of the first detecting means 5 in the middle of the treated water flow path 9, and the second detecting means 6 has a known electrode potential. The apparatus includes a reference electrode and a lead ion electrode, and measures a lead ion concentration based on an electromotive force generated between the reference electrode and the lead ion electrode. Other configurations are shown in FIG.
This is the same as the first embodiment shown in FIG. In this embodiment,
The lead ion concentration which causes a measurement error of the measurement result of the electrode potential of the calcium ion electrode of the first detecting means 5 is measured by the second detecting means 6, and the correction calculation section 71 calculates the lead ion concentration by the second calculating means 71. First detecting means 5 based on
Is performed to correct the detection result, and to measure an accurate calcium ion concentration.

An example of the operation of correcting the detection result of the first detection means 5 in the correction operation section 71 in the apparatus configuration as shown in FIG. 2 will be described.

Here, first, the calcium ion concentration in the mineral-added water as the treated water is 0.05 to 0.5 mol.
/ L, an intermediate concentration of 0.1 mol /
The calcium ion concentration of L is used as a reference for concentration correction.

When the calcium ion concentration is 0.1 mol / L, the actual measurement of the lead ion concentration C and the calcium ion concentration derived from the Nernst equation based on the electrode potential of the calcium ion electrode in the first detecting means 5 is performed. The relationship with the value A _Ca 'has a relationship experimentally as shown in FIG. Based on the experimental results, the following equation (1) is calculated between the lead ion concentration C and the actually measured value A _Ca ′ of the calcium ion concentration.
0) holds.

A _Ca ′ = 0.2 + 0.025 × log (C) = 0.1 + {0.1 + 0.025 × 025 × log (C)} (10) Here, the actual calcium ion concentration is A _Ca , measurement error of calcium ion concentration due to lead ion concentration ΔA _Ca =
If 0.1 + 0.025 × 025 × log (C),
The following equation (11) is derived. A _Ca ′ = A _Ca + ΔA _Ca (11) Accordingly, the actual calcium ion concentration A _Ca is derived from the following equation (12).

A _Ca = A _Ca ′ −ΔA _Ca = A _Ca ′ −0.1−0.025 × 025 × log (C) (12) Therefore, the above equation (12) is used as a correction equation. From the measured value A _Ca ′ of the calcium ion concentration derived from the Nernst equation based on the electrode potential of the calcium ion electrode of the first detecting means 5 and the lead ion concentration C detected by the second detecting means 6, If the correction operation unit 71 for deriving the calcium ion concentration _Aca is used, it is possible to derive an accurate calcium ion concentration even if the detection result by the first detection means 5 fluctuates due to a change in the lead ion concentration. .

The above equation (12) is an equation applied when it is assumed that the concentration of calcium ions in the treated water is 0.05 to 0.5 mol / L in a specific calcium ion electrode. When the configuration of the ion electrode is changed or the assumed range of the calcium ion concentration in the treated water is changed, a correction formula is derived as appropriate through experiments, and the first detection means 5 is determined based on the correction formula. It is necessary to use the correction operation unit 71 that corrects the detection result.

If the assumed range of the calcium ion concentration in the treated water is wide, the range of the calcium ion concentration is divided into a plurality of ranges, and a plurality of correction formulas as shown in equation (12) derived for each range are obtained. The correction operation unit 71 to be used can also be used. In this case, the correction calculation unit 71 selects the closest correction formula according to the actually measured value A _Ca ′ of the calcium ion concentration, and corrects the detection result by the first detection means 5 using the selected correction formula. Is to do so.

The interfering substances which affect the result of detecting the calcium ion concentration by the first detecting means 5 include:
In addition to the above-mentioned lead ions, mercury ions, hydrogen ions, strontium ions, iron ions, copper ions, sodium ions, ammonium ions, potassium ions, lithium ions, barium ions, zinc ions, magnesium ions, and silane ions are exemplified. Therefore, if the second detecting means 6 having an ion electrode for detecting these ion concentrations is used, more accurate calcium ion concentration can be measured. In this case, for each of these interfering substance concentrations, as shown in equation (12) for lead ions, the interfering substance concentration, the actually measured value of the calcium ion concentration detected by the first detecting means 5, and the calcium ion concentration A correction formula representing the relationship between the actual density and the actual density is derived experimentally, and a correction calculation unit 71 that corrects the detection result of the first detection means 5 using this correction formula is used as the correction calculation unit 71. . In this way, even if the detection result by the first detection means 5 fluctuates due to a change in each interfering substance, an accurate calcium ion concentration can be derived.

Here, the calcium ion electrode provided in the first detecting means 5 has various electrode configurations and materials, and therefore, the properties of the various calcium ion electrodes are slightly different, so that the interfering substances are also different. Therefore, it is preferable to appropriately provide the second detection means 6 for measuring an interfering substance according to the configuration of the calcium ion electrode. Further, depending on the type of the calcium ion electrode, there may be an interfering substance other than the above interfering substance. In this case, it is preferable to appropriately provide the second detecting means 6 for measuring the interfering substance according to the configuration of the calcium ion electrode. .

In the above example, the calcium ion concentration is measured, and the first detecting means 5 is provided with a calcium ion electrode. Sodium ion,
Examples include potassium ion, chloride ion, bromide ion, nitrate ion, nitrite ion, cyanide ion and the like. In this case, the first detection means 5 includes a sodium ion electrode, a potassium ion electrode, a chloride ion electrode, a bromide ion electrode, a nitrate ion electrode, a nitrite ion electrode, or a cyanide ion electrode according to the detection target. Used.

When the object to be measured is changed and the ion electrode provided in the first detecting means 5 is changed in this way, since the interfering substance exists in each of the ion electrodes similarly to the calcium ion electrode, the first detecting means 5 is not used. A second detecting means 6 for measuring an interfering substance corresponding to the ion electrode provided is provided. On the other hand, the actual concentration of the object to be measured, the measured value by the first detecting means 5 and the A correction expression representing a relational expression of the substance concentration is derived, and a correction operation unit 71 for correcting the detection result of the first detection means 5 based on the correction expression is provided. In this case, the second detection means 6 may be an ion electrode whose electrode potential varies depending on the concentration of the interfering substance.

For example, when the first detecting means 5 is constituted by an ion electrode for detecting sodium ion concentration in water,
Examples of the interfering substance include silver ion, hydrogen ion, lithium ion, cesium ion, potassium ion, thallium ion, rubidium ion, ammonium ion and the like. Is provided at least one or more for detecting any one of the above.

When the first detecting means 5 comprises an ion electrode for detecting the concentration of potassium ion in water, the interfering substances include cesium ion, ammonium ion,
Examples thereof include thallium ion, hydrogen ion, silver ion, silane ion, lithium ion, and sodium ion. In this case, at least one of the second detection means 6 that detects any of these concentrations is used. The above is provided.

When the first detecting means 5 is constituted by an ion electrode for detecting the chloride ion concentration in water, the interfering substances include hydroxide ion, sulfide ion, bromide ion, iodide ion and cyanide ion. Chloride ion, perchlorate ion, nitrate ion, sulfate ion, hydrogen carbonate ion, acetate ion, fluoride ion, thiosulfate ion, ammonia and the like. In this case, the second detection means 6
At least one or more of those detecting any of these concentrations is provided.

When the first detecting means 5 is constituted by an ion electrode for detecting the concentration of bromide ion in water, the interfering substances include sulfide ion, iodide ion, cyanide ion, chloride ion, ammonia and the like. In this case, at least one device for detecting any one of these concentrations is provided as the second detecting means 6.

When the first detecting means 5 is constituted by an ion electrode for detecting the concentration of nitrate ion in water, the interfering substances are perchlorate ion, iodide ion, chlorate ion, cyanide ion, bromide ion. , Nitrite ion,
Examples thereof include hydrogen sulfide ion, carbonate ion, hydrogen carbonate ion, phosphate ion, monohydrogen phosphate ion, acetate ion, fluoride ion, sulfate ion, and the like. Are provided at least one or more for detecting any one of the above.

When the first detecting means 5 is constituted by an ion electrode for detecting the concentration of nitrite ion in water, the interfering substances are iodide ion, acetate ion, bromide ion, perchlorate ion, fluoride ion. , Sulfate ion, bicarbonate ion, chloride ion, nitrate ion, salicylic acid, polyphosphate, ascorbic acid, lactic acid and the like. In this case, any of these concentrations is used as the second detection means 6. Is provided at least one or more.

When the first detecting means 5 comprises an ion electrode for detecting the concentration of cyanide ions in water, the interfering substances include sulfide ions, iodide ions, bromide ions, chloride ions and the like. In this case, at least one or more means for detecting any of these concentrations is provided as the second detecting means 6.

FIG. 4 shows a third embodiment. In this embodiment, an electrolyzed water generator is used as the water treatment device 1. In this water treatment apparatus 1, an electrolytic tank 42, which is a water treatment section 4, is provided in a housing 12 of the apparatus main body. The electrolytic cell 42 has at least a pair of electrodes disposed therein, and electrolyzes raw water such as tap water or well water supplied into the electrolytic cell by supplying an electrolytic current between the electrodes to convert alkaline water or alkaline ionized water. Electrolytic water such as acidic ion water is generated as treated water. The housing 12
The downstream end of the raw water flow path 8 through which the raw water flows is introduced into the, and the downstream end of the raw water flow path 8 is connected to the water treatment unit 4. Here, the upstream end of the raw water flow path 8 is opened as the inflow port 2 outside the housing 12,
The inflow port 2 is connected to a water supply curan 13 as raw water supply means. The housing 12 is provided with an upstream end of a treated water flow passage 9 through which the treated water treated by the water treatment unit 4 flows. The upstream end of the treated water passage 9 is connected to the water treatment unit 4. Have been. Here, the downstream end of the treated water flow passage 9 is opened as the discharge port 3 outside the housing 12. Here, although only one system of the treated water channel 9 is shown in the drawing, two systems of treated water channels 9 for separately discharging the alkaline ionized water and the acidic ionized water generated in the electrolytic cell 42 are provided. You may.

In the housing 12, the first detecting means 5, the second detecting means 6, and the correcting means 7 for correcting the detection value of the first detecting means 5 based on the detection results from the second detecting means 6. Are arranged. In the present embodiment, the first detecting means 5, the second detecting means 6, and the correcting means 7 are provided for the purpose of detecting the total calcium component concentration in the treated water. Here, the total calcium component concentration refers to the concentration of the total amount of calcium-containing chemical species including not only the calcium component existing in the ionic state but also the calcium concentration precipitated in the molecular state. Here, in the present embodiment, the first detecting means 5 detects the calcium ion concentration which is water quality information (related information) related to the total calcium component concentration to be detected, and the total calcium component concentration is determined from the calcium ion concentration. Is derived.

The first detecting means 5 detects water quality information to be detected, and in the example shown in the figure, is disposed in the middle of the treated water flow path 9. In the example shown in the figure, as the first detection means 5, the same as the first embodiment and the second embodiment, the one constituted by a calcium ion electrode for detecting calcium ions in the treated water is provided. Te

The second detecting means 6 detects other water quality information which affects the detection result of the water quality information detected by the first detecting means 5. In the example shown in the figure, as the second detection means 6, a pH measurement device or the like constituted by a glass electrode or the like is provided in the middle of the pipe of the treated water flow path 9 and on the upstream side of the first detection means 5. P causing the fluctuation of the calcium ion concentration detected by the detecting means 5
H is to be measured.

In the water treatment apparatus 1 configured as described above, the raw water flows from the inlet 2 through the raw water flow path 8 to the water treatment section 4.
(Electrolysis tank 42), is electrolyzed in the water treatment section 4, and is supplied from the discharge port 3 through the treated water flow path 9 as treated water (electrolyzed water). In such a water treatment process, the pH of the treated water is first measured by the second detecting means 6 while flowing through the treated water flow path 9, and further, the calcium ion concentration (caused by the calcium ion concentration) is measured by the first detecting means 5. The electrode potential of the calcium ion electrode) is measured. The measurement result of the water quality information by the first detection means 5 and the second detection means 6 is input to the correction calculation unit 71, and the water quality information (calcium ion concentration or calcium ion electrode caused by the calcium ion concentration) by the first detection means 5 Is corrected, and the total calcium component concentration in the treated water is derived from the corrected calcium ion concentration. The operation such as the electrolysis conditions in the water treatment unit 4 is controlled based on the detection result of the first detection unit 5 after the correction. Thereby, the operation of the water treatment unit 4 is controlled based on accurate water quality information.

An example of the operation of correcting the detection result of the first detection means 5 in the correction operation section 71 in the above-described apparatus configuration will be described.

First, an example of the correction operation section 71 for correcting the detection result of the first detection means 5 according to a correction equation will be described.

As described above, as the pH of the treated water fluctuates, the abundance ratio of the carbonic acid component existing in the water in the state of CO ₂ , HCO ₃ ⁻ , CO ₃ ²⁻ varies as shown in FIG. Then p
As H becomes higher, the concentration of CO ₃ ^2- increases, and calcium ion and C in water are reacted by the reaction of the above chemical formula (2).
O ₃ ^2- reacts to precipitate calcium carbonate. As a result, when the pH increases, the ratio of the amount of calcium carbonate to the total amount of calcium components in the treated water increases, and the ratio of the amount of calcium ions decreases. FIG. 6 shows an example of the relationship between the pH and the calcium ion concentration experimentally obtained when the calcium ion concentration is normalized with the total calcium component concentration in water being 1.

Based on the experimental results, the total calcium component
Density B_Ca, Calcium ion concentration A _CaAnd the pH of water
The result of deriving the relationship is shown in the following equation (13).

A _Ca = B _Ca × [10 exp (2 × pH-16.60) {1 + 10 exp (pH-6.35) +10 exp (2 × pH-16.60)}] (13) As a result, the total calcium component concentration B _Ca is _calculated by the following equation (14).
It is represented as

B _Ca = A _Ca {10exp (2 × pH-16.60) × {1 + 10exp (pH-6.35) + 10exp (2 × pH-16.60)} (14) Using the equation (14) as a correction equation, the calcium ion concentration A derived from the Nernst equation based on the electrode potential of the calcium ion electrode of the first detection means 5
A correction operation unit 7 for correcting the calcium ion concentration, which is related information, from the _Ca and the pH detected by the second detection means 6 to derive the total calcium component concentration _BCa , which is the detection object.
When 1 is used, an accurate total calcium component concentration can be derived even if the detection result by the first detection means 5 fluctuates due to a change in pH. However, the above formula is derived by experiment, and when the quality of the water to be measured fluctuates, it is necessary to use a correction formula separately derived by experiment.

Next, a description will be given of a correction operation section 71 for correcting the detection result of the first detection means 5 according to a correction table.

In this example, the electrode potential E of the calcium ion electrode of the first detecting means 5 is corrected to a value E ″ based on the total calcium component concentration based on the following equation (15). Correction operation unit 71 for deriving the total calcium component concentration by the Nernst equation at the electrode potential E ″ of
In this case, a value specified for each predetermined pH range in the correction table is used as the correction coefficient (standard value) Δe ′ in Expression (15).

E ″ = E−Δe ′ (15) As shown in Table 2 below,
A value obtained by associating the pH detected by the second detection means 6 with the value of Δe ′ can be used. In addition, f ~ in the table
k represents a specific numerical value.

[0082]

[Table 2]

FIG. 7 shows a fourth embodiment. This embodiment uses a mineral water generator as the water treatment device 1. In the water treatment apparatus 1, a mineral water generation section 4 as a water treatment section 4 is provided in a housing 12 of the apparatus main body.
1 is provided. The downstream end of the raw water flow path 8 through which the raw water flows is introduced into the housing 12, and the downstream end of the raw water flow path 8 is connected to the water treatment unit 4. Here, the upstream end of the raw water flow path 8 is opened as an inflow port 2 outside the housing 12, and the inflow port 2 is connected to a water supply curan 13 which is a raw water supply means. The housing 12 is provided with an upstream end of a treated water flow passage 9 through which the treated water treated by the water treatment unit 4 flows. The upstream end of the treated water passage 9 is connected to the water treatment unit 4. Have been. Here, the downstream end of the treated water flow passage 9 is opened as the discharge port 3 outside the housing 12.

In the housing 12, a first detecting means 5, a second detecting means 6, and a correcting means 7 for correcting the detection value of the first detecting means 5 based on the detection result from the second detecting means 6. Are arranged. The first detecting means 5, the second detecting means 6, and the correcting means 7 are provided for detecting the calcium ion concentration in the treated water, and the first detecting means 5 and the second detecting means 6 It has the same configuration as that of the first embodiment, except that the detection means 6 is arranged on the upstream side of the first detection means 5 in the middle of the pipe of the treated water flow path 9.

The switching means 1 is provided outside the housing 1.
0 and a water quality display section 11 are provided.

The water quality display section 11 displays the result of detection by the second detecting means 6 in a visible manner using an arbitrary means such as a liquid crystal display or a light emitting lamp. The switching means 10 sets a correction amount of the detection result of the first detection means 5, and the user performs an input operation based on the detection result by the second detection means 6 displayed on the water quality display unit 11. Anything can be used as long as it can be used.For example, it is composed of an operation knob such as a dial type or a slide type, a keyboard, etc., and the value of the water quality measurement result is operated by operating the operation knob, the keyboard, etc. Can be applied.

The correction means 7 is provided with a storage means for receiving the detection results from the first detection means 5 and the second detection means 6 and for temporarily storing the detection results, and a second storage means for storing the detection results. The detection result from the second detection means 6 is displayed on the water quality display unit 1
1; a storage unit for temporarily storing an input signal transmitted from the switching unit 10; and a first unit based on a detection result from the first detection unit 5 and an input signal from the switching unit 10. A calculating means for correcting the detection result by the detecting means 5, an output means for outputting the corrected detection result by the first detecting means 5, and a water treatment unit 4 based on the corrected detection result by the first detecting means 5. And a control means for controlling the operation of (1). The calculating means of the correction calculating unit 71 is
In addition, a computer such as a CPU that performs an operation in accordance with a built-in computer program, a logic circuit that performs a certain operation, or the like can be provided.

In correcting the detection result of the first detection means 5 by the correction calculation section 71, the detection result of the first detection means 5 is corrected according to a correction formula or a correction table as in the above-described embodiment. It is possible to use a correction operation unit 71 having an operation means.

In correcting the detection result of the first detection means 5 by the correction calculation section 71, a correction calculation section having a calculation means for correcting the detection result of the first detection means 5 according to a correction formula or a correction table. 71 can be used. For example, a correction formula or a correction table is used to correct the detection result by the first detection means 5 based on the detection results from the first detection means 5 and the second detection means 6. Here, when the correction formula is used, the calculation means of the correction calculation unit 71 may be a computer such as a CPU including a storage medium storing a computer program and a calculation circuit for performing a calculation according to the computer program, or a fixed calculation. It can be configured by providing a logic circuit or the like for performing processing. When the correction table is used, the calculation means of the correction calculation unit 71 is referred to as a storage unit (correction storage unit) storing the correction table, a storage medium storing a computer program, and referring to the correction table according to the computer program. And a computer such as a CPU configured with an arithmetic circuit that performs an arithmetic operation.

In the water treatment apparatus 1 configured as described above, the raw water flows from the inlet 2 through the raw water flow path 8 to the water treatment section 4.
(Mineral water generation unit 41), and is subjected to a treatment such as addition of a mineral component in a water treatment unit 4, and is supplied as treated water from a discharge port 3 through a treated water flow path 9. . In such a water treatment process, the temperature of the treated water is measured by the second detecting means 6 while flowing through the treated water flow path 9, and the calcium ion concentration (calcium caused by the calcium ion concentration) is further measured by the first detecting means 5. The electrode potential of the ion electrode) is measured. The measurement results of the water quality information by the first detection means 5 and the second detection means 6 are input to the correction calculation unit 71, and the detection results from the second detection means 6 are displayed on the water quality display unit 11. Then, when the user operates the switching means 10 based on the display result,
The correction unit 7 corrects the detection result by the first detection unit 5, and based on the corrected detection result by the first detection unit 5, controls the operation of the water treatment unit 4, such as the amount of calcium added. Thereby, the operation of the water treatment unit 4 is controlled based on accurate water quality information. Further, the corrected detection result of the first detection means 5 output from the correction means 7 can be visually displayed by an arbitrary means such as a liquid crystal display or a light emitting lamp.

FIG. 8 shows a fifth embodiment.
In this embodiment, the water quality display section 11 is not provided in the fourth embodiment, and the second detection means 6 is formed separately from the housing 12.

The correction means 7 is provided with storage means for receiving the detection result from the first detection means 5 and for temporarily storing the detection result, and for temporarily storing the input signal transmitted from the switching means 10. Storage means for storing, and first detection means 5
Calculating means for correcting the detection result by the first detection means 5 based on the detection result from the control unit and the input signal from the switching means 10; output means for outputting the corrected detection result by the first detection means 5; And a control unit for controlling the operation of the water treatment unit 4 based on the detection result obtained by the first detection unit 5. The detection result from the detection means 6 is inputted and the detection result from the second detection means 6 stored in the storage means for temporarily storing the detection result is output to the water quality display unit 11. The difference from the fourth embodiment is that no output means is provided.

The second detecting means 6 includes a color reagent showing a color reaction in accordance with another water quality information to be measured by the second detecting means 6 or a test paper containing the color reagent. Can be used. When pH is measured by the second detection means 6 as such a coloring reagent or test paper, litmus test paper, thymol blue, methyl red, or the like can be used. When the strontium ion concentration is measured by the second detection means 6, carbonate-containing water that precipitates StCO ₃ by the following reaction formula (16) can be used.

St ²⁺ + CO ₃ ^2- → StCO ₃ ↓ (16) In the case where a device provided with a color reagent is used as the second detection means 6, the color detection reagent is used as the second detection means 6 in water. Means for adding a fixed amount of water, and measuring the degree of coloration by the addition of the coloring reagent with a measuring instrument such as a chromaticity meter or a turbidity meter, or colorimetric paper or the like, to obtain water quality information to be measured. What is constituted by measuring means for measuring can be used. For example, when a certain amount of carbonated water is added to the treated water,
The reaction represented by the reaction formula (16) proceeds, and coloration occurs in the treated water in accordance with the strontium ion concentration. The strontium concentration in the treated water is derived by measuring the degree of the coloration by the measuring means. Things.

When the second detection means 6 uses the color of a test paper containing a color reagent,
The second detection means 6 determines the degree of coloration of the test paper and the test paper immersed in the treated water with a measuring instrument such as a chromaticity meter or a turbidity meter, or with a colorimetric paper to determine the object to be measured. What is comprised by the measuring means which measures the water quality information which is can be used. .

In the water treatment apparatus 1 configured as described above, the raw water flows from the inlet 2 through the raw water flow path 8 to the water treatment section 4.
And treated by a water treatment unit 4, and supplied as treated water from a discharge port 3 through a treated water channel 9. In such a water treatment process, the quality of the treated water, such as calcium ion concentration (electrode potential of the calcium ion electrode due to the calcium ion concentration), is measured by the first detection means 5. This first detecting means 5
The measurement result of the water quality information is input to the correction calculation unit 71. On the other hand, the user puts the treated water discharged from the water treatment device 1 into the container 14 or the like, and
4 is to measure the other water quality information of the treated water, and when the user operates the switching means 10 based on the measurement result, the detection result by the first detection means 5 is corrected by the correction means 7. The operation of the water treatment section 4 such as the amount of added calcium is controlled based on the corrected detection result of the first detection means 5. Thereby, the operation of the water treatment unit 4 is controlled based on accurate water quality information. Further, the corrected detection result output by the first detection means 5 output from the correction means 7 can be visually displayed by an arbitrary means such as a liquid crystal display or a light emitting lamp.

In this embodiment, the configuration of the apparatus is simpler than that in the case of using an electrochemical water quality measuring apparatus that generates an electromotive force in accordance with the pH value of raw water or the like as the second detecting means 6, and the manufacturing cost can be reduced. is there.

In each of the above-described embodiments, only one type of the second detection means 6 is provided. However, a plurality of the second detection means 6 are provided to provide another type of information which affects the target water quality information. A plurality of types of water quality information can be detected, and the detection result of the first detection means 5 can be corrected by the correction means 7 based on the detection results of the plurality of different water quality information. In this case, more accurate water quality information can be obtained. Can be derived. Water treatment device 1
As described above, a mineral water generation device and an electrolyzed water generation device are used, but the present invention employs a water purifier as a water treatment device.
It may be used for a device such as a bath or a septic tank for 4 hours.

[0099]

As described above, the water treatment apparatus according to the first aspect of the present invention has a water treatment section for treating raw water in a flow passage from an inflow port to a discharge port, and water quality information to be processed. A water treatment device provided with at least one second detection means for detecting another water quality information, based on a detection result from the second detection means The second detection means detects another water quality information affecting the detection result of the first detection means, and the correction means based on the detection result. Can correct the detection result of the first detection means, and can accurately detect the target water quality information irrespective of a change in other water quality information affecting the detection result of the first detection means. And control based on this accurate water quality information. Or Tsu, one in which it is possible or to display accurate water quality information.

According to a second aspect of the present invention, in the first aspect, the first detecting means is constituted by an ion electrode for detecting the concentration of a specific ion in water. A specific ion concentration in water is detected based on the value, and this ion concentration is corrected by the correction unit based on the detection result of the other water quality information by the second detection unit, and an accurate concentration of the specific ion is derived. The control can be performed based on the accurate ion concentration, and the accurate ion concentration can be displayed.

According to a third aspect of the present invention, in the first or second aspect, since the second detecting means detects pH, pH information is used as another water quality information which affects the detection result of the first detecting means. Can be detected by the second detection means, and the correction result can be used to correct the detection result of the first detection means based on the pH, and the pH that affects the detection result of the first detection means
Regardless of the change in the water quality, it is possible to accurately detect the target water quality information, and it is possible to perform control based on the accurate water quality information or to display the accurate water quality information. Things.

According to a fourth aspect of the present invention, in accordance with any one of the first to third aspects, since the second detecting means detects the water temperature, another water quality affecting the detection result of the first detecting means. The water temperature is detected as information by the second detection means, and the detection result of the first detection means can be corrected by the correction means based on the water temperature. Regardless, it is possible to accurately detect the target water quality information, and it is possible to perform control based on this accurate water quality information or to display accurate water quality information. .

According to a fifth aspect of the present invention, in any one of the first to fourth aspects, the second detecting means detects an impurity which may cause an error in the detection result of the first detecting means. Impurities can be detected by the second detection means as another water quality information affecting the detection results of the one detection means, and the detection results of the first detection means can be corrected by the correction means based on the detection results of the impurities. It is possible to accurately detect the target water quality information irrespective of changes in impurities affecting the detection result of the first detection means, and perform control based on the accurate water quality information, It is possible to display various water quality information.

According to a sixth aspect of the present invention, in the fifth aspect, the first detecting means comprises an ion electrode for detecting the calcium ion concentration in water, and the second detecting means comprises a lead ion concentration, a mercury ion concentration, Hydrogen ion concentration, strontium ion concentration, iron ion concentration, copper ion concentration, sodium ion concentration, ammonium ion concentration,
Potassium ion concentration, lithium ion concentration, barium ion concentration, zinc ion concentration, magnesium ion concentration,
Since at least one device for detecting any one of the silane ion concentrations is provided, the output value of the calcium ion electrode caused by the calcium ion concentration is detected by the first detecting means, and the output value of the calcium ion electrode is affected. Lead, mercury, hydrogen, strontium, iron, copper, sodium, ammonium, potassium, lithium, barium, zinc, magnesium, and silane ions The detection result can be detected by the detection means, the detection result of the first detection means can be corrected by the correction means based on the detection result of the interference substance, and the interference substance affecting the detection result of the first detection means To accurately detect the target calcium ion concentration regardless of changes in It is those that can be, or perform control based on the accurate quality information, in which it is possible or display accurate quality information.

According to a seventh aspect of the present invention, in the fifth aspect, the first detecting means comprises an ion electrode for detecting a sodium ion concentration in water, and the second detecting means comprises a silver ion concentration, a hydrogen ion concentration, Since at least one of lithium ion concentration, cesium ion concentration, potassium ion concentration, thallium ion concentration, rubidium ion concentration, and ammonium ion concentration is provided, at least one of them detects the sodium ion concentration. In addition to detecting the output value of the sodium ion electrode, silver ions, hydrogen ions, lithium ions, cesium ions, potassium ions, thallium ions, rubidium ions, and ammonium ions, which are interfering substances that affect the output value of the sodium ion electrode, are detected. Can be detected by the second detection means. The detection result of the first detection means can be corrected by the correction means based on the detection result of this interfering substance, regardless of the change of the interfering substance affecting the detection result of the first detection means, It can accurately detect the sodium ion concentration, and can perform control based on this accurate water quality information and can display accurate water quality information.

According to an eighth aspect of the present invention, in the fifth aspect, the first detecting means comprises an ion electrode for detecting a potassium ion concentration in water, and the second detecting means comprises a cesium ion concentration, an ammonium ion concentration, Since at least one or more of any of thallium ion concentration, hydrogen ion concentration, silver ion concentration, silane ion concentration, lithium ion concentration, and sodium ion concentration is provided, the first detecting means is caused by potassium ion concentration. Cesium ion, ammonium ion, thallium ion, hydrogen ion, silver ion, silane ion, lithium ion, and sodium ion, which are interfering substances that affect the output value of the potassium ion electrode. This interference can be detected by the second detection means. The detection result of the first detection means can be corrected by the correction means based on the detection result of the quality, and the target potassium ion concentration can be corrected regardless of the change of the interfering substance which affects the detection result of the first detection means. Can be accurately detected, and control can be performed based on the accurate water quality information, and accurate water quality information can be displayed.

According to a ninth aspect of the present invention, in the fifth aspect, the first detecting means is an ion electrode for detecting a chloride ion concentration in water, and the second detecting means is a hydroxide ion concentration, a sulfide ion Concentration, bromide ion concentration, iodide ion concentration, cyanide ion concentration, perchlorate ion concentration, nitrate ion concentration, sulfate ion concentration, hydrogen carbonate ion concentration, acetate ion concentration, fluoride ion concentration, thiosulfate ion concentration, ammonia In order to provide at least one or more detectors for detecting any one of the concentrations, the output value of the chloride ion electrode caused by the chloride ion concentration is detected by the first detection means, and the output value of the chloride ion electrode is detected. Hydroxide, sulfide, bromide, iodide, cyanide, perchlorate, nitrate Ions, sulfate ions, hydrogen carbonate ions, acetate ions, fluoride ions, thiosulfate ions, and ammonia can be detected by the second detection means, and the first detection is performed by the correction means based on the detection result of this interfering substance. The detection result of the means can be corrected, and the target chloride ion concentration can be accurately detected irrespective of the change of the interfering substance which affects the detection result of the first detection means. It is possible to perform control based on accurate water quality information and to display accurate water quality information.

According to a tenth aspect of the present invention, in the fifth aspect, the first detecting means comprises an ion electrode for detecting a bromide ion concentration in water, and the second detecting means comprises a sulfide ion concentration and an iodide ion. The first detection means detects the output value of the bromide ion electrode due to the bromide ion concentration because it has at least one device for detecting any one of concentration, cyanide ion concentration, chloride ion concentration, and ammonia concentration. In addition, sulfide ions, iodide ions, cyanide ions, chloride ions, and ammonia, which are interfering substances that affect the output value of the bromide ion electrode, can be detected by the second detection means. The detection result of the first detection means can be corrected by the correction means based on the detection result of It can accurately detect the target bromide ion concentration irrespective of the change of the interfering substance, and can perform control based on this accurate water quality information or display accurate water quality information. It is possible.

According to an eleventh aspect of the present invention, in the fifth aspect, the first detecting means comprises an ion electrode for detecting a nitrate ion concentration in water, and the second detecting means comprises a perchlorate ion concentration and an iodide. Ion concentration, chlorate ion concentration, cyanide ion concentration, bromide ion concentration, nitrite ion concentration, hydrogen sulfide ion concentration, carbonate ion concentration, hydrogen carbonate ion concentration, phosphate ion concentration, monohydrogen phosphate ion concentration, acetate ion Concentration, fluoride ion concentration, or sulfate ion concentration, at least one of which detects the nitrate ion concentration. Perchlorate ion, iodide ion, chlorate ion, cyanide ion, bromide, which are interfering substances that affect the output value of the ion electrode Ion, nitrite ion, hydrogen sulfide ion, carbonate ion, hydrogen carbonate ion, phosphate ion, monohydrogen phosphate ion, acetate ion, fluoride ion, sulfate ion can be detected by the second detection means. The detection result of the first detecting means can be corrected by the correcting means based on the detection result of the interfering substance, and the target nitrate ion can be corrected regardless of the change of the interfering substance affecting the detection result of the first detecting means. The concentration can be accurately detected, and control can be performed based on the accurate water quality information, and accurate water quality information can be displayed.

According to a twelfth aspect of the present invention, in the fifth aspect, the first detecting means comprises an ion electrode for detecting the concentration of nitrite ions in water, and the second detecting means comprises an iodide ion concentration and an acetate ion. Concentration, bromide ion concentration, perchlorate ion concentration, fluoride ion concentration, sulfate ion concentration, bicarbonate ion concentration, chloride ion concentration, nitrate ion concentration, salicylic acid concentration, polyphosphate concentration, ascorbic acid concentration, lactate concentration In order to provide at least one detector for detecting any one of them, the output value of the nitrite ion electrode caused by the nitrite ion concentration is detected by the first detection means, and the output value of the nitrite ion electrode is affected. The interfering substances iodide ion, acetate ion, bromide ion, perchlorate ion, fluoride ion, sulfate ion, hydrogen carbonate ion, Chloride ions, nitrate ions, salicylic acid, polyphosphate, ascorbic acid, and lactic acid can be detected by the second detection means, and the detection result of the first detection means is corrected by the correction means based on the detection result of the interfering substance. It is possible to accurately detect the target nitrite ion concentration regardless of the change of the interfering substance that affects the detection result of the first detection means. It is possible to perform control on the basis of the information and to display accurate water quality information.

According to a thirteenth aspect of the present invention, in the fifth aspect, the first detecting means comprises an ion electrode for detecting a cyanide ion concentration in water, and the second detecting means comprises a sulfide ion concentration and an iodide. Since at least one device for detecting any one of ion concentration, bromide ion concentration and chloride ion concentration is provided, the output value of the cyanide ion electrode caused by the cyanide ion concentration is detected by the first detection means. At the same time, sulfide ions, iodide ions, bromide ions, and chloride ions, which are interfering substances that affect the output value of the cyanide electrode, can be detected by the second detection means. The detection result of the first detection means can be corrected based on the correction means based on the change of the interfering substance which affects the detection result of the first detection means. Are those cyanide concentration of interest can be accurately detected, or perform control based on the accurate quality information, in which it is possible or display accurate quality information.

The invention of claim 14 is the invention of claims 1 to 1
In any one of the first to third aspects, the first detection means includes a color reagent for detecting water quality information by showing a color reaction as a second detection means or a test paper containing the color reagent. The other water quality information affecting the detection result is detected by the color reagent or the test paper containing the color reagent, and the detection result of the first detection means is corrected by the correction means based on the detection result. Irrespective of changes in other water quality information affecting the detection result of the first detection means,
The objective water quality information can be accurately detected, and control can be performed based on the accurate water quality information, and accurate water quality information can be displayed. Moreover, the device configuration becomes simpler than when an electrochemical water quality measurement device is used as the second detection means,
The manufacturing cost can be reduced.

Further, the invention of claim 15 relates to claims 1 to 1
In any one of the first to fourth aspects, the apparatus further includes a water quality display unit for displaying a detection result by the second detection unit, and performs a switching operation in accordance with the display result displayed on the water quality display unit to operate the correction unit, whereby the first detection unit In order to include a switching means that can set the correction amount of the detection result of, the user operates the switching means based on water quality information different from the detection purpose displayed on the water quality display unit,
Regardless of a change in other water quality information that affects the detection result of the first detection means, the target water quality information can be accurately detected, and control is performed based on the accurate water quality information. It is possible to display accurate water quality information.

The invention of claim 16 is the invention of claims 1 to 1
In any one of 5, the correction means includes a correction operation unit that derives a correction value of the detection result of the first detection means based on the detection result of the second detection means using a correction formula or a correction table, Another water quality information affecting the detection result of the first detection means is detected by the second detection means, and based on the detection result, the detection result of the first detection means is obtained by using a correction formula or a correction table by the correction means. It is possible to accurately detect the target water quality information regardless of the change of the other water quality information affecting the detection result of the first detection means. It is possible to perform control on the basis of the information and to display accurate water quality information.

[Brief description of the drawings]

FIG. 1 is a schematic diagram showing a first embodiment.

FIG. 2 is a schematic diagram showing a second embodiment.

FIG. 3 is a graph showing a relationship between a lead ion concentration in treated water having a calcium concentration of 0.1 mol / L and a measured value of a calcium ion concentration based on an actually measured value of an electrode potential of a calcium ion electrode.

FIG. 4 is a schematic view showing a third embodiment.

FIG. 5: pH of treated water containing carbonic acid and C in treated water
O _2, HCO ₃ ^- is a graph showing the relationship between and CO ₃ ^2- abundance.

FIG. 6 is a graph showing the relationship between the pH of the treated water and the standard value of the calcium ion concentration in the treated water when the total calcium component concentration in the treated water is 1.

FIG. 7 is a schematic view showing a fourth embodiment.

FIG. 8 is a schematic view showing a fifth embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Water treatment apparatus 2 Inflow port 3 Discharge port 4 Water treatment part 5 First detection means 6 Second detection means 7 Correction means 10 Switching means 11 Water quality display part 71 Correction calculation part

[Procedure amendment]

[Submission date] December 4, 2000 (200.12.
4)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Claim 6

[Correction method] Change

[Correction contents]

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] Claim 8

[Correction method] Change

[Correction contents]

[Procedure amendment 3]

[Document name to be amended] Statement

[Correction target item name] 0008

[Correction method] Change

[Correction contents]

Here, the carbonic acid component contained in the water is C
Although it exists in the state of O ₂ , HCO ₃ ⁻ , CHO ₃ ^2- etc., FIG.
These abundance ratio varies according to pH changes as shown in, in which the state of existence of carbon acid component in water varies. Therefore, when tap water contains a certain amount or more of a carbonic acid component, of the electrolyzed water generated by electrolysis, in alkaline water having a high pH, the following reaction formula (2)
As a result, calcium ions become calcium carbonate and precipitate, so that the total amount of calcium components does not change, but the amount of calcium ions dissolved in water decreases. At this time, the relationship between the pH value of the alkaline ionized water, the concentration of dissolved calcium ions, and the total calcium component concentration when the total calcium component concentration is 1 is as shown in FIG.

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0017

[Correction method] Change

[Correction contents]

According to a sixth aspect of the present invention, in the fifth aspect, the first detecting means 5 comprises an ion electrode for detecting the calcium ion concentration in the water, and the second detecting means 6
As lead ion concentration, mercury ion concentration, hydrogen ion concentration, strontium ion concentration, iron ion concentration, copper ion concentration, sodium ion concentration, ammonium ion concentration, potassium ion concentration, lithium ion concentration, barium ion concentration, zinc ion concentration, magnesium Ion concentration
It is characterized by comprising at least one or more devices for detecting any one of the degrees .

[Procedure amendment 5]

[Document name to be amended] Statement

[Correction target item name] 0019

[Correction method] Change

[Correction contents]

According to an eighth aspect of the present invention, in the fifth aspect, the first detecting means 5 comprises an ion electrode for detecting the concentration of potassium ions in water, and the second detecting means 6 comprises a cesium ion concentration and an ammonium ion concentration. concentration, thallium ion concentration, hydrogen ion concentration, time silver ions concentrated and is characterized by comprising comprises at least one of which detects either the lithium ion concentration, the sodium ion concentration.

[Procedure amendment 6]

[Document name to be amended] Statement

[Correction target item name] 0057

[Correction method] Change

[Correction contents]

The interfering substances which affect the result of detecting the calcium ion concentration by the first detecting means 5 include:
In addition to the above lead ions, mercury ions, hydrogen ions, strontium ions, iron ions, copper ions, sodium ions, ammonium ions, potassium ions, lithium ions, barium ions, zinc ions, magnesium Lee <br/> on- No. Therefore, if a device having an ion electrode for detecting these ion concentrations is used as the second detection means 6, a more accurate calcium ion concentration can be measured. In this case, for each of these interfering substance concentrations, as shown in equation (12) for lead ions, the interfering substance concentration, the actually measured value of the calcium ion concentration detected by the first detecting means 5, and the calcium ion concentration A correction formula representing the relationship between the actual density and the actual density is derived experimentally, and a correction calculation unit 71 that corrects the detection result of the first detection means 5 using this correction formula is used as the correction calculation unit 71. . In this way, an accurate calcium ion concentration can be derived even if the result of detection by the first detection means 5 fluctuates due to a change in each interfering substance.

[Procedure amendment 7]

[Document name to be amended] Statement

[Correction target item name] 0062

[Correction method] Change

[Correction contents]

When the first detecting means 5 comprises an ion electrode for detecting the concentration of potassium ion in water, the interfering substances include cesium ion, ammonium ion,
Thallium ions, hydrogen ions, silver ions, lithium ions, which sodium ions, and the like, provided that this case is to detect any of these concentrations as a second detecting means 6 at least one Things.

[Procedure amendment 8]

[Document name to be amended] Statement

[Correction target item name] 0104

[Correction method] Change

[Correction contents]

According to a sixth aspect of the present invention, in the fifth aspect, the first detecting means comprises an ion electrode for detecting the calcium ion concentration in water, and the second detecting means comprises a lead ion concentration, a mercury ion concentration, Hydrogen ion concentration, strontium ion concentration, iron ion concentration, copper ion concentration, sodium ion concentration, ammonium ion concentration,
Potassium ion concentration, the lithium ion concentration, barium ion concentration, concentration of zinc ions, magnesium ions concentration <br/> those detecting either to comprise at least one, the calcium ion concentration at the first detection means In addition to detecting the output value of the resulting calcium ion electrode, lead ions, mercury ions, hydrogen ions, strontium ions, iron ions, copper ions, sodium ions, and ammonium ions are interfering substances that affect the output value of the calcium ion electrode. , Potassium ion, lithium ion,
Barium ions, zinc ions, magnesium ions can be detected by the second detecting means, it is possible to correct the detection result of the first detecting means by the correction means based on a detection result of the interfering substances, the It is possible to accurately detect the target calcium ion concentration regardless of the change of the interfering substance which affects the detection result of the detection means, and to perform control based on this accurate water quality information, It is possible to display various water quality information.

[Procedure amendment 9]

[Document name to be amended] Statement

[Correction target item name] 0106

[Correction method] Change

[Correction contents]

According to an eighth aspect of the present invention, in the fifth aspect, the first detecting means comprises an ion electrode for detecting a potassium ion concentration in water, and the second detecting means comprises a cesium ion concentration, an ammonium ion concentration, thallium ion concentration, hydrogen ion concentration, time silver ions concentrated, the lithium ion concentration and having a detects the one of sodium ion concentration of at least one or more of potassium due to the potassium ion concentration in the first detecting means ions While detecting the output value of the electrode, cesium ion which is an interfering substance that affects the output value of the potassium ion electrode,
Ammonium ions, thallium ions, hydrogen ions, silver <br/> ions, lithium ions, sodium ions can be detected by the second detecting means, first by the correction means based on a detection result of the interfering substances The detection result of the detection means can be corrected, and regardless of the change of the interfering substance affecting the detection result of the first detection means, the target potassium ion concentration can be accurately detected. It is possible to perform control based on accurate water quality information and to display accurate water quality information.

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) G01N 33/18 101 G01N 33/18 101

Claims (16)

[Claims] 1. A water treatment apparatus comprising: a water treatment section for treating raw water; and a first detection means for detecting target water quality information, in a flow path from an inlet to an outlet. And at least one or more second detecting means for detecting another water quality information, and correcting means for correcting a detection value of the first detecting means based on a detection result from the second detecting means. A water treatment apparatus characterized by the above-mentioned. 2. The water treatment apparatus according to claim 1, wherein the first detection means comprises an ion electrode for detecting a concentration of a specific ion in water. 3. The water treatment apparatus according to claim 1, wherein the second detection means detects pH. 4. The water treatment apparatus according to claim 1, wherein the second detection means detects a water temperature. 5. The water treatment apparatus according to claim 1, wherein the second detecting means detects an impurity which may cause an error in the detection result of the first detecting means. . 6. The first detecting means comprises an ion electrode for detecting calcium ion concentration in water, and the second detecting means comprises lead ion concentration, mercury ion concentration, hydrogen ion concentration, strontium ion concentration, and iron ion concentration. , At least one of which detects any one of copper ion concentration, sodium ion concentration, ammonium ion concentration, potassium ion concentration, lithium ion concentration, barium ion concentration, zinc ion concentration, magnesium ion concentration and silane ion concentration The water treatment device according to claim 5, wherein the water treatment device is constituted by: 7. The first detecting means comprises an ion electrode for detecting sodium ion concentration in water, and the second detecting means comprises silver ion concentration, hydrogen ion concentration, lithium ion concentration, cesium ion concentration, and potassium ion concentration. The water treatment apparatus according to claim 5, further comprising at least one unit for detecting any one of thallium ion concentration, rubidium ion concentration, and ammonium ion concentration. 8. The first detecting means comprises an ion electrode for detecting potassium ion concentration in water, and the second detecting means comprises cesium ion concentration, ammonium ion concentration, thallium ion concentration, hydrogen ion concentration, silver ion concentration. At least one of which detects any one of silane ion concentration, lithium ion concentration and sodium ion concentration
The water treatment apparatus according to claim 5, comprising at least one. 9. An ion electrode for detecting a chloride ion concentration in water, wherein the first detection means includes a hydroxide ion concentration, a sulfide ion concentration, a bromide ion concentration, an iodide ion concentration, At least one that detects any of cyanide ion concentration, perchlorate ion concentration, nitrate ion concentration, sulfate ion concentration, bicarbonate ion concentration, acetate ion concentration, fluoride ion concentration, thiosulfate ion concentration, and ammonia concentration The water treatment apparatus according to claim 5, comprising at least one. 10. The first detecting means comprises an ion electrode for detecting bromide ion concentration in water, and the second detecting means comprises sulfide ion concentration, iodide ion concentration, cyanide ion concentration, and chloride ion concentration. The water treatment apparatus according to claim 5, further comprising at least one unit for detecting any one of ammonia concentration and ammonia concentration. 11. The first detecting means comprises an ion electrode for detecting the concentration of nitrate ions in water, and the second detecting means comprises perchlorate ion concentration, iodide ion concentration, chlorate ion concentration, cyanide ion. Concentration, bromide ion concentration, nitrite ion concentration, hydrogen sulfide ion concentration, carbonate ion concentration, hydrogen carbonate ion concentration, phosphate ion concentration, monohydrogen phosphate ion concentration, acetate ion concentration, fluoride ion concentration, sulfate ion concentration The water treatment apparatus according to claim 5, comprising at least one or more detectors for detecting any one of them. 12. The first detecting means comprises an ion electrode for detecting nitrite ion concentration in water, and the second detecting means comprises iodide ion concentration, acetate ion concentration, bromide ion concentration, perchlorate ion concentration. , At least one of which detects any of fluoride ion concentration, sulfate ion concentration, bicarbonate ion concentration, chloride ion concentration, nitrate ion concentration, salicylic acid concentration, polyphosphate concentration, ascorbic acid concentration and lactic acid concentration The water treatment apparatus according to claim 5, wherein the water treatment apparatus is provided. 13. The first detecting means comprises an ion electrode for detecting cyanide ion concentration in water, and the second detecting means comprises sulfide ion concentration, iodide ion concentration, bromide ion concentration, chloride ion concentration. The water treatment apparatus according to claim 5, comprising at least one or more devices for detecting any one of the following. 14. A method according to claim 14, wherein the second detecting means comprises a color reagent for detecting water quality information by showing a color reaction or a test paper containing the color reagent. The water treatment device according to claim 1. 15. A water quality display unit for displaying a detection result by the second detection unit, and a switching operation is performed according to the display result displayed on the water quality display unit to operate the correction unit, whereby the first detection unit 15. The water treatment apparatus according to claim 1, further comprising a switching unit that can set a correction amount of the detection result. 16. The image processing apparatus according to claim 1, further comprising a correction operation unit configured to derive a correction value of the detection result of the first detection unit based on the detection result of the second detection unit using a correction expression or a correction table. The water treatment apparatus according to any one of claims 1 to 15, wherein: