DE102010042541A1 - Device useful for treating liquid, preferably water for industrial and/or home applications, comprises permeable chamber with wall and device for treating water, inlet, outlet, connecting line, regulating device, and drive unit - Google Patents

Abstract

Device for treating a liquid, preferably water for industrial and/or home applications, comprises: a permeable chamber with a wall (14) and a device (24) for treating water; an inlet (28) for supplying the water into the chamber (22); an outlet (30) for discharging the water from the chamber; a connecting line for conducting untreated or differently treated water from inlet to outlet; a regulating device for regulating the ratio of the volume streams of the water flowing through the connecting line and through the chamber; and a drive unit for driving the regulating device. Device for treating a liquid, preferably water for industrial and/or home applications, comprises: a permeable chamber with a wall (14) and a device (24) for treating water; an inlet (28) for supplying the water into the chamber (22); an outlet (30) for discharging the water from the chamber; a connecting line for conducting untreated or differently treated water from inlet to outlet, which branches from the inlet, upstream to the chamber, and opens into the outlet, downstream to the chamber; a regulating device for regulating the ratio of the volume streams of the water flowing through the connecting line and through the chamber; and a drive unit for driving the regulating device depending on at least one selectable parameter. An independent claim is also included for treating a liquid, preferably water for industrial and/or home applications, comprising supplying the untreated water into the chamber by the inlet, treating the water in the chamber with the device for treating water, discharging the treated water from the chamber by the outlet, simultaneously conducting the untreated water from the inlet into the outlet through the connecting line, controlling the ratio of the volume streams of the water flowing through the connecting line and through the chamber, with a regulator, and controlling the regulating device using the drive unit, depending on at least one selectable parameter.

Description

The present invention relates to a device for treating a liquid, in particular water for industrial and / or domestic applications, comprising a flow-through chamber with a wall and with means for treating the water, an inlet for supplying the water into the chamber, a discharge process the water from the chamber, a branching off upstream of the chamber from the inlet and downstream of the chamber into the drain connecting pipe for conducting untreated or differently treated water from the inlet into the drain, and a regulating means for regulating the ratio of the volume flows through the connecting line and through the chamber flowing water, and a corresponding method.

The invention is described below with reference to the treatment of water, but can also be used for other liquids, for example for aqueous solutions.

Devices of the type mentioned are used for many different applications, for example for demineralizing process water in heating and heat systems, in which water is used as the heat transfer medium. The hardness and especially the carbonate hardness of the water used play an important role. In heating and heating systems, the water is recirculated for a long time, where it is repeatedly heated and cooled. As a result of this repeated temperature change, limescale deposits can occur (scale). In particular in the heat exchangers, such lime deposits lead to a reduction in the efficiency of the heating and heating systems.

Furthermore, the hardness affects the taste of beverages made with the water, for example tea or coffee.

With devices of the type mentioned, the water can be brought to a particular application hardness adapted. For this purpose, the hardness of existing, for example, in the water pipe, untreated water during installation of the device is measured with an external measuring device and set the regulating device manually accordingly. By the ratio of the volume flows through the chamber and the connecting line, the desired hardness can be adjusted by means of a blend of treated, differently treated and untreated water. Under differently treated water in this context water should be understood, which is treated in a different way than the treated in the chamber water.

Usually, the once set ratio of the volume flows is usually not changed. Since hardness determinations of the untreated water are often not carried out correctly, the desired hardness of the water leaving the device is not achieved. In addition, if the process parameters, in particular the hardness of the existing untreated water, change, then again the desired hardness is not achieved even in the case where the hardness of the water initially present has been correctly determined. The hardness of the water can change, for example, when the water supplier uses other sources of water. This may further lead to over or under loading of the water treatment agent used if the device is not manually readjusted. Furthermore, it can not be determined whether and from when the means for treating the water is exhausted.

The object of the present invention is therefore to provide a device which at least reduces the disadvantages discussed and makes it possible to achieve the desired properties of the treated water even if the properties of the untreated water change during operation of the device.

The object is achieved with a device of the aforementioned type, which comprises a drive unit for driving the regulating device as a function of one or more selectable parameters. In this case, the drive unit is preferably operated electrically or electronically and has an arithmetic unit which can process the selectable parameters. The one or more selectable parameters may be, for example, a point in time at which the regulating device is activated and the ratio of the volume flow of the untreated water flowing through the connecting line and through the chamber is changed. This can be advantageous if it is known that the existing water changes its properties at regular time intervals, for example, if the water is added at regular intervals with a disinfectant. If the disinfectant has a detrimental effect on the water treating agent, a greater part or even all of the untreated water can be passed over the connecting pipe, thus sparing the agent.

In an advantageous embodiment of the device according to the invention, the drive unit comprises a measuring unit for determining one or more of the water characterizing Parameter. A parameter may be, for example, the pH, wherein the means for treating the water are then preferably designed to adjust the pH. If the pH of the untreated water changes, the desired pH can be maintained by regulation, such as increasing or decreasing the volume flow of the untreated water through the connection line.

Preferably, the measuring unit is designed as a conductivity measuring device for determining the conductivity. By means of the conductivity measurement, the hardness in particular of the untreated water can be determined. In this case, the means are expediently designed to demineralize the water. Then, depending on the hardness of the untreated water, the regulating device can be controlled so that the desired hardness of the treated water can be achieved and maintained. In this case, the measuring unit is preferably arranged in the inlet, whereby the device can be made compact and the conduction paths can be kept short.

In a further embodiment of the invention, the measuring unit comprises a flow measuring device for determining the volume of the water which has flowed through the device. The flow measuring device preferably measures the volume of water flowing through the device and is located upstream of the branch of the connecting line from the inlet or downstream of the junction of the connecting line in the drain. Tables are stored in the control unit, with the help of which the measured value of the volume flowing through the device, the conductivity and the position of the regulating device can be used to determine which residual capacity the medium still has in the chamber. The higher the proportion of the volume that flows through the means and the more the water is demineralized, the faster the capacity decreases. If the position of the regulating device is changed or the conductivity of the water entering the device changes, the residual capacity is recalculated, with the already used capacity being included in the calculation. This process is repeated with each change in the measured parameters, so that the residual capacity is always recalculated according to the currently available values of the parameters, taking into account the already used capacities. The user thus receives information about which volume can still be treated with the device before the capacity has been exhausted. Thus, the regulator may be driven without the risk of exceeding the capacity of the medium, which could result in damage to downstream units. Alternatively, the flow measuring device can also be arranged in the connecting line.

Furthermore, the drive unit comprises a servo motor for controlling the regulating device. The regulating device can be designed, for example, as a rotary valve, which releases a larger or smaller flow cross section depending on the position. The servomotor can move a shaft to which the valve body of the rotary valve is attached. Thus, an automated device can be easily created. It is preferred if the servomotor controls the regulating device by means of a gear connection. Gear connections have proven to be very robust and safe and are also simple and inexpensive to manufacture. As an alternative, the servomotor may comprise a linear motor so that the gear connection can be dispensed with.

Preferably, the drive unit comprises an input unit for entering data related to the treatment of water. The input unit can be realized, for example, as a keyboard or as a touch-sensitive display. This makes it possible, for example, to flexibly and quickly change the one or more selectable parameters in order to be able to react to changed requirements. If, for example, the hardness is to be reduced to a lesser extent for a certain period of time, then this can be entered via the input unit without much effort. In this way, the means for treating the water can be efficiently exploited.

To reduce the hardness, an ion exchange material is usually used which exchanges, for example, Ca ²⁺ and Mg ²⁺ ions for H ⁺ ions. Eventually, the ion exchange material is exhausted, so that the hardness can not be reduced. The more volume passed through the chamber, the sooner the ion exchange material is depleted. With a corresponding adjustment of the target value of the hardness of the treated water in this case, the ion exchange material can be operated longer before it must be regenerated, which can reduce the operating costs.

In a further development, the drive unit comprises a further, downstream of the junction of the connecting line in the flow arranged measuring unit for determining a water characterizing parameter. Thus, a set value of a parameter characterizing the treated water, for example the hardness or the pH, entered by means of the input unit can be compared with the measured actual value. The control unit is able to detect deviations and a corresponding signal to generate, for example in the form of an audible or visual warning signal. In perfectly functioning systems, the further measuring unit is not required because, knowing the value of the relevant parameter of the untreated water, by choosing the ratio of the volume flow through the chamber and the connecting line, the desired value can be achieved with sufficient accuracy and reliability. However, if, for example, the ion exchange material is exhausted, the desired value can no longer be achieved. According to the invention, the control unit registers a deviation between the setpoint and the actual value and generates a corresponding warning signal. Furthermore, it may also be the situation that the ion exchange material no longer makes the replacement of the ions in the original extent, for example by load-dependent steric hindrances or by changes in porosity. According to the invention, the ratio of the volume flows through the chamber and the connecting line can be changed so that nevertheless the desired value is achieved. The ion exchange material is thus optimally utilized.

Preferably, the device comprises a detachably connectable to the chamber terminal head, in which the drive unit, the connecting line and the regulating device are arranged. Thus, existing chambers can be retrofitted for treating water, without the need for a large additional effort would be required. Also, the connection head can be easily replaced in the case where the drive unit or the regulating device should be defective. Furthermore, by removing the connection head, the ion exchange material can be exchanged more easily, should this be necessary.

The device according to the invention preferably comprises a mechanical adjustment unit for the manual adjustment of the regulation device. The mechanical adjustment unit is coupled to the shaft, for example, so that the valve body can be rotated and thus the ratio of the volume flows through the connection line and the chamber can be changed manually. If the drive unit, which is typically operated electrically or electronically, fails, for example as a result of the power source becoming dry, then it is still possible to manually change the ratio of the volume flows. Furthermore, the device can also be operated completely manually, if it is not possible to provide a power source available.

A preferred embodiment of the device according to the invention is characterized in that a filter unit for differently treating the water is arranged in the connecting line. By different treatment is meant in this context a treatment of the water, which differs from that which is carried out in the chamber. Thus, it is possible according to the invention to treat the water in different ways and to adjust the ratio of the volume flows of the treated and the differently treated water. For example, in the chamber, the water can be demineralized chemically while being physically cleaned in the connecting line with an activated carbon bed. According to this embodiment, the treated water leaving the device can be processed in a targeted manner, so that both chemical and physical properties can be set.

A development has an upstream of the chamber from the inlet branching and downstream of the chamber into the drain opening further connecting line for conducting untreated water from the inlet in the process. With this further connection line, the untreated water can be passed directly from the inlet into the drain in the event, for example, when the means or the filter unit must be replaced. In order to be able to conduct the untreated water completely through the further connecting line, a blocking element can be provided at a corresponding point, for example upstream of the chamber and downstream of the branching of the further connecting line from the inlet. The blocking element intervenes, for example, when the chamber is removed from the device to exchange the means. Thus, the flow of water through the device need not be interrupted when the agent or filter unit needs to be replaced.

• – Zuführen des unbehandelten Wassers in eine Kammer mittels eines Zulaufs,
• – Behandeln des Wassers in der Kammer mit Mitteln,
• – Abführen des behandelten Wassers aus der Kammer mittels eines Ablaufs,
• – gleichzeitiges Leiten von unbehandeltem Wasser vom Zulauf in den Ablauf durch eine stromaufwärts der Kammer aus dem Zulauf abzweigende und stromabwärts der Kammer in den Ablauf mündende Verbindungsleitung,
• – Regulieren des Verhältnisses der Volumenströme des durch die Verbindungsleitung und durch die Kammer strömenden Wassers mit einer Regulierungseinrichtung, und
• – Ansteuern der Regulierungseinrichtung mittels einer Ansteuereinheit in Abhängigkeit eines oder mehrerer wählbarer Parameter.

A further aspect of the invention relates to processes for treating process water, in particular for industrial and / or domestic applications, comprising the following steps:

• Feeding the untreated water into a chamber by means of an inlet,
• Treating the water in the chamber with means
• Removing the treated water from the chamber by means of a drain,
• - Simultaneous routing of untreated water from the inlet into the drain through an upstream of the chamber from the inlet branching and downstream of the chamber into the drain opening connecting line,
• - Regulating the ratio of the volume flows of the flowing through the connecting line and through the chamber water with a regulating device, and
• - Controlling the regulating device by means of a drive unit in dependence of one or more selectable parameters.

From the specified order of the method steps, no definition is to be derived therefrom. The advantages which have been set forth for the embodiments of the device according to the invention apply equally to the method according to the invention.

• – Bestimmen eines oder mehrerer das Wasser charakterisierender Parameter, insbesondere der Leitfähigkeit oder des Volumens des die Vorrichtung durchströmenden unbehandelten Wassers mittels einer Messeinheit, insbesondere einer Leitfähigkeitsmesseinrichtung und einer Durchflussmesseinrichtung, und
• – Ansteuern der Regulierungseinrichtung mittels der Ansteuereinheit in Abhängigkeit des oder der bestimmten Parameter, insbesondere der bestimmten Leitfähigkeit und des Volumens des die Vorrichtung durchströmenden Wassers.

The process according to the invention is developed with the following steps:

• Determining one or more parameters characterizing the water, in particular the conductivity or the volume of the untreated water flowing through the device, by means of a measuring unit, in particular a conductivity measuring device and a flow measuring device, and
• - Controlling the regulating device by means of the drive unit in dependence of or the specific parameters, in particular the specific conductivity and the volume of the water flowing through the device.

Due to design considerations, it is advantageous to arrange the flow measuring device and the conductivity measuring device locally adjacent or even to summarize a component. Since, according to the invention, the conductivity of the untreated water is determined, the volume of the untreated water and the total volume of the water flowing through the device are determined in this case, but this is not absolutely necessary. It is important to know what volume has flowed through the chamber so that the available capacity of the water treating agent can be calculated. It is sufficient to determine the volume at any point of the device according to the invention, since it is known due to the position of the regulating device, how large the ratio of the volume flow flowing through the chamber to the volume flow flowing through the connecting line.

If the volume which has flowed through the chamber is determined, the user can be shown which volume can still be treated with the available capacity of the medium. When exactly the remaining capacity will be consumed can not be calculated. However, this is not disadvantageous, since in addition to the capacity and a total operating time of the funds can be considered, which may not be exceeded. In the first extreme, the means must be replaced even if they have been flowed through only a small volume and thus a large residual capacity of the funds is available, but the maximum operating time has already expired. In the second extreme case, the medium is flowed through with a high volume, so that the capacity is exhausted significantly before reaching the maximum operating time. The funds must therefore always be replaced when either the capacity is exhausted or the maximum operating time is reached. The measuring unit emits a signal as soon as one of these two cases occurs.

• – Eingeben von auf das Behandeln von Wasser bezogenen Daten mittels der Eingabeeinheit, insbesondere des gewünschten Wertes des oder der das behandelte Wasser charakterisierenden Parameter und ganz besonders der Leitfähigkeit des behandelten Wassers,
• – Bestimmen des Wertes des oder der das behandelte Wasser charakterisierenden Parameter, insbesondere der Leitfähigkeit des behandelten Wassers mittels einer weiteren Messeinheit, insbesondere einer weiteren Leitfähigkeitsmesseinrichtung,
• – Vergleichen des gewünschten Wertes mit dem bestimmten Wert und Generieren eines entsprechenden Signals mittels der Recheneinheit, und
• – Ansteuern der Regulierungseinrichtung mittels der Ansteuereinheit anhand des von der Recheneinheit generierten Signals.

The process according to the invention is developed with the following steps:

• Inputting data relating to the treatment of water by means of the input unit, in particular the desired value of the parameter (s) characterizing the treated water and in particular the conductivity of the treated water,
• Determining the value of the parameter (s) characterizing the treated water, in particular the conductivity of the treated water by means of a further measuring unit, in particular a further conductivity measuring device,
• - Comparing the desired value with the specific value and generating a corresponding signal by means of the arithmetic unit, and
• - Controlling the regulating device by means of the drive unit based on the signal generated by the arithmetic unit.

The invention will now be described in detail by way of preferred embodiments with reference to the attached drawings. Show it

1 a first embodiment of the device according to the invention, and

2 A second embodiment of the device according to the invention, each with reference to a schematic diagram.

The device according to the invention 101 according to a first embodiment comprises a container 12 with a wall 14 with a side wall 16 , a bottom wall 18 and a ceiling wall 20 , In the container 12 is a chamber 22 arranged, in which the water is treated. In the chamber 22 are means 24 arranged to treat the water, in this case an ion exchange material 26 with which the water can be demineralized. The water, which is taken, for example, a pipe network, by means of an inlet 28 in the chamber 22 guided and by means of a procedure 30 out of the chamber 22 dissipated. In the area of the bottom wall 18 is a collection unit 32 provided in the water, the means 24 flowed through, collected and the process 30 is supplied. The pressure of the piping system ensures that the water against the direction of gravity in the drain 30 rises.

In the area of the ceiling wall 20 shows the wall 14 a lead 34 on that of the Intake 28 and from the process 30 is going through. On the lead 34 the wall 14 is a connection head 36 releasably attachable. In the connection head 36 are sections of the inlet 28 and the process 30 educated. For a sealing connection necessary sealing means are not shown. Furthermore, in the connection head 36 a connection line 38 between the inlet 28 and the process 30 arranged, with the untreated water directly from the inlet 28 in the process 30 can be directed without the chamber 22 to flow through. In the connection line 38 is a regulatory device 40 arranged, with which the volume flow through the connecting line 38 can be regulated continuously. This is expediently carried out with a change in the size of the flow-through cross section in the regulating device 40 , The regulation device 40 can completely reduce the volume flow in a first maximum position to zero or in a second maximum position to the connecting line 38 flowing through untreated water to oppose no reduction of the flow-through cross-section. Between the first and second maximum position of the durchströmbare cross section can be changed continuously.

Alternatively, the regulating device 40 also downstream of the branch of the connecting line 38 in the inflow 28 or upstream of the junction of the connection line 38 in the process 30 be arranged.

Furthermore, a drive unit 42 for driving the regulating device 40 in the connection head 36 arranged, which is a computing unit 44 , a servomotor 46 , a measurement unit 48 and an input unit 50 includes. In this case, the measuring unit includes 48 a conductivity measuring device 52 and a flow meter 53 and is in the inflow 28 where it determines the conductivity and / or volume of the untreated water. The conductivity measuring device 52 and the flow meter 53 are via an electrical line 54 with the arithmetic unit 44 connected via which they the signals corresponding to the value of the measured conductivity and the measured volume of the untreated water to the computing unit 44 can transfer. But it is equally possible to measure the volume of treated water, so that the flow measuring unit in the drain 30 can be arranged. The servomotor 46 is also via an electrical line 54 with the arithmetic unit 44 connected and has a gear connection 56 on, with a wave 64 the regulatory body 40 can be turned. The regulation device 40 can as a rotary valve 58 be configured, wherein the flow-through cross-section of the connecting line 38 by turning the shaft 64 and of the associated with this valve body variable and thus the volume flow of untreated water through the connecting line 38 is adjustable. Instead of the gear connection 56 An unillustrated linear motor can also be used.

Furthermore, a mechanical adjustment unit 66 provided with the shaft 64 can be rotated manually, for example, when the drive unit 42 not working. The adjustment unit 66 is with the wave 64 coupled, causing the rotary valve 58 can be turned. The adjustment unit 66 may have a recess into which a hex key for turning is introduced.

With the input unit 50 For example, the desired conductivity or hardness can be entered, which is the treated water when leaving the device 101 should have. In the arithmetic unit 44 are stored data, on the basis of which the arithmetic unit 44 With appropriate calculation algorithms can determine what ratio of the volume flows through the chamber 22 and the connection line 38 necessary to get the desired hardness at one of the measuring unit 48 measured hardness of the untreated water. Accordingly, the drive unit controls 42 the regulation device 40 as a function of the conductivity measuring device 52 determined value of the conductivity of the untreated water to adjust the necessary ratio of the volume flows. Here are in the arithmetic unit 44 also stored information about which position of the valve body leads to which ratio of the volume flows.

Usually, the conductivity of the untreated water does not change over a certain period of time or only to a negligibly small extent. It is therefore not necessary to conduct the conductivity at a high frequency. The frequency of the conductivity measurements can also be made via the input unit 50 to get voted. One measurement per week can be regarded as sufficiently frequent, whereby energy can be saved.

In 2 is a second embodiment of the device according to the invention 102 illustrated by a schematic diagram. Here is another unit of measurement 60 , designed as a further conductivity measuring device 62 , downstream of the junction of the connecting line 38 in the process 30 arranged and also via an electrical line 54 with the arithmetic unit 44 where, for example, the conductivity of the treated water can be determined. Furthermore, the regulation device 40 in the area of the branch of the connecting line 38 from the inlet 28 arranged. This arrangement allows the volume flow through the connecting line 38 or through the chamber 22 completely interrupt. For example, should the hardness of the untreated water already correspond to the desired value, the volume flow through the chamber 22 be completely interrupted, so the means 24 to treat the water is not unnecessarily stressed. Otherwise, the structure corresponds to that of the first embodiment 101 ,

With the second embodiment of the device 102 can be checked if the via the input unit 50 entered setpoint value, for example, the reference value of the conductivity, with the actual value of the treated water matches. If this is not the case, the regulator may 40 be controlled accordingly to equalize the actual value to the setpoint. In the event that the control of the regulating device 40 has no or not the desired effect on the actual value of the treated water, for example due to exhaustion of the ion exchange material 26 , the arithmetic unit can 44 generate a warning signal to indicate that the device 102 is no longer able to provide the treated water with the desired properties.

In addition, in the connection line 38 a filter unit 68 intended. In the connection line 38 However, the water is treated differently than in the chamber 22 For example, by means of an activated carbon bed, while in the chamber 22 a softening of the water is made.

Furthermore, another connection line 70 provided upstream of the branch of the connecting line 38 from the inlet 28 branches off and downstream of the junction of the connecting line 38 in the process 30 opens. About it, the untreated water directly from the inlet 28 in the process 30 be guided, for example, when the funds 24 or the filter unit 68 must be replaced. This is a blocking element 72 provided with the volume flow through the further connecting line 70 can be performed. The blocking element 72 can be manually closed and reopened in a mechanical manner, not shown.

LIST OF REFERENCE NUMBERS

10

contraption

12

container

14

wall

16

Side wall

18

bottom wall

20

ceiling wall

22

chamber

24

medium

26

ion exchange

28

Intake

30

procedure

32

multiple application

34

head Start

36

connection head

38

connecting line

40

regulating device

42

control unit

44

computer unit

46

servomotor

48

measuring unit

50

input unit

52

Conductivity measuring device

53

Flow meter

54

management

56

gear train

58

rotary valve

60

further measuring unit

62

further conductivity measuring device

64

wave

66

mechanical adjustment unit

68

filter unit

70

further connection line

72

blocking element

Claims (16)

Device for treating a liquid, in particular water for industrial and / or domestic applications, comprising - a chamber ( 22 ) with a wall ( 14 ) and with funds ( 24 ) for treating the water, - an inlet ( 28 ) for feeding the water into the chamber ( 22 ), - a procedure ( 30 ) for removing the water from the chamber ( 22 ), - one upstream of the chamber ( 22 ) from the inflow ( 28 ) branching off and downstream of the chamber ( 22 ) in the process ( 30 ) interconnector ( 38 ) for conducting untreated or differently treated water from the feed ( 28 ) in the process ( 30 ), and - a regulatory body ( 40 ) for regulating the ratio of the volume flows of the through the connecting line ( 38 ) and through the chamber ( 22 ) flowing water, characterized by a drive unit ( 42 ) for driving the regulatory device ( 40 ) depending on one or more selectable parameters. Apparatus according to claim 1, characterized in that the drive unit ( 42 ) a measuring unit ( 48 ) for determining one or more parameters characterizing the water to be treated. Device according to claim 1 or 2, characterized in that the measuring unit ( 48 ) a conductivity measuring device ( 52 ) for determining the conductivity. Device according to one of the preceding claims, characterized in that the measuring unit ( 48 ) a flow measuring device ( 52 ) for determining the volume of water that has passed through the device. Device according to one of the preceding claims, characterized in that the measuring unit ( 48 ) in the inflow ( 28 ) is arranged. Device according to one of the preceding claims, characterized in that the drive unit ( 42 ) a servomotor ( 46 ) for driving the regulatory device ( 40 ). Apparatus according to claim 6, characterized in that the servomotor ( 46 ) the regulatory body ( 40 ) by means of a gear connection ( 56 ). Device according to one of the preceding claims, characterized in that the drive unit ( 42 ) an input unit ( 50 ) for entering data related to the treatment of the water. Device according to one of claims 2 to 8, characterized in that the drive unit ( 42 ) another, downstream of the junction of the connecting line ( 38 ) in the process ( 30 ) arranged measuring unit ( 48 ) for determining one or more parameters characterizing the water. Device according to one of the preceding claims, characterized by a detachable with the wall ( 14 ) the chamber ( 22 ) connectable connection head ( 36 ), in which the control unit ( 42 ), the connecting line ( 38 ) and the regulatory body ( 40 ) are arranged. Device according to one of the preceding claims, characterized by a mechanical adjustment unit ( 66 ) for manual adjustment of the regulation device ( 40 ). Device according to one of the preceding claims, characterized in that in the connecting line ( 38 ) a filter unit ( 68 ) is arranged for differently treating the water. Apparatus according to claim 12, characterized by an upstream of the chamber ( 22 ) from the inflow ( 28 ) branching off and downstream of the chamber ( 22 ) in the process ( 30 ) further connecting line ( 70 ) for conducting untreated water from the inlet ( 28 ) in the process ( 30 ). Process for treating a liquid, in particular water for industrial and / or domestic applications, comprising the following steps: - feeding the untreated water into a chamber ( 22 ) by means of an inlet ( 28 ), - treating the water in the chamber ( 22 ) with means ( 24 ), - discharging the treated water from the chamber ( 22 ) by means of a process ( 30 ), - simultaneous discharge of untreated water from the feed ( 28 ) in the process ( 30 ) through an upstream of the chamber ( 22 ) from the inflow ( 28 ) branching off and downstream of the chamber ( 22 ) in the process ( 30 ) interconnector ( 38 ), - regulating the ratio of the volume flows of the through the connecting line ( 38 ) and through the chamber ( 22 ) of flowing water with a regulating device ( 40 ), and - driving the regulatory device ( 40 ) by means of a drive unit ( 42 ) depending on one or more selectable parameters. The method of claim 14, further comprising the following step: determining one or more parameters characterizing the water, in particular the conductivity or the volume of the untreated water flowing through the device by means of a measuring unit ( 48 ), in particular a conductivity measuring device ( 52 ) and a flow measuring device ( 53 ), - driving the regulatory device ( 40 ) by means of the drive unit ( 42 ) depending on the particular parameter or parameters, in particular the specific conductivity and the volume of the water flowing through the device. Method according to claim 14 or 15, comprising the following steps: inputting data relating to the treatment of water by means of the input unit, in particular the desired value of the parameter characterizing the treated water and especially the conductivity, determining the value of the water characterizing the treated water Parameter, in particular the conductivity of the treated water by means of another measuring unit ( 48 ), in particular a further conductivity measuring unit ( 52 ), - comparing the desired value with the determined value and generating a corresponding signal by means of the arithmetic unit, and - activating the regulating device ( 40 ) by means of the drive unit ( 42 ) on the basis of the arithmetic unit ( 44 ) generated signal.

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