WO2006069771A1

WO2006069771A1 - Control device for wastewater and method for controlling quality parameters of wastewater

Info

Publication number: WO2006069771A1
Application number: PCT/EP2005/014036
Authority: WO
Inventors: Peter Eberle
Original assignee: Uws United Water Systems Gmbh
Priority date: 2004-12-28
Filing date: 2005-12-24
Publication date: 2006-07-06
Also published as: DE102004063720A1

Abstract

The invention relates to a control device for wastewater. The inventive control device (52) is characterized by comprising at least one sensor (48), adapted to determine a quality parameter of the wastewater and transmit it as an electronic signal, and a transmission device (56) for transmitting determined, evaluated and/or stored sensor values of the sensor (48), thereby allowing to control the functioning of the treatment process.

Description

Control device for waste water and method for controlling quality parameters of waste water

The present invention relates to a wastewater control apparatus and a method for controlling quality parameters of wastewater.

Today, waste water generated in households and businesses is often fed into central sewage treatment plants via a very extensive sewer network, in which the wastewater is treated in a multi-stage process and, after complete clarification, discharged into natural streams and rivers. However, this wastewater treatment system requires considerable investment in the construction and maintenance of the sewage network and the construction and maintenance of the sewage treatment plants. Since the sewage networks can not be operated completely dense, there is constant leakage of untreated wastewater into the groundwater, which can be significantly polluted. Because of these systemic disadvantages decentralized wastewater treatment plants remain interesting, especially for private households and small commercial enterprises, where the wastewater contains at most small amounts of toxic or environmentally harmful substances.

Wastewater treatment plants, in particular small sewage treatment plants with a capacity of up to 30 m ^{3 of} water, which have several successive chambers, are known as small-scale wastewater treatment plants from the state of the art. The wastewater is introduced into a first chamber to there deposit such substances, which have a greater specific gravity than water and therefore fall to the bottom of the chamber. From there, the wastewater enters another chamber in which substances contained in wastewater can be separated in a further stage. In this or in another subsequent chamber, a biological clarification process takes place in which bacteria contained in the wastewater convert chemical substances. set, which are also contained in the wastewater. With these wastewater treatment plants satisfactory cleaning results can be achieved especially in waste water that is not mixed with special toxic or environmentally harmful substances.

The transport of the wastewater from one clarifier to the next can be done in these known systems according to the overflow principle. For this purpose, the sequence of a downstream clarifier must be lower than the expiration of the previous clarifier. However, such an arrangement is not possible or desirable in all cases. A disadvantage of this system is also to be seen in the fact that it is left to chance, as long as a certain batch of wastewater each remain in one of the successive container. Without aeration of the sewage in the sewage tank with oxygen or a supply of oxygen-containing additional water, the bacteria necessary for a successful clarification of the waste water can die off. In addition, it is possible that an overflow hole clogged and thereby the overflow of the waste water is blocked. Furthermore, chemical or biological substances can enter the wastewater, which adversely affects the oxygen content or the pH of the sewage in the clarifier. If the water in the clarifier is too acidic, the bacteria in the wastewater can also die off.

For the safe operation of sewage treatment plants, especially small sewage treatment plants, it is therefore of great importance to monitor the course of the clarification process to rule out malfunction. From the prior art, it is known to make three to five times a year manual measurements of the quality of the wastewater to determine whether the clarification process still sufficiently cleans the wastewater. However, such random measurements are not sufficient to ensure that the treatment plant does not discharge effluents into the environment during operation are not sufficiently clarified. However, a more frequent control of the clarification process fails because of the too high costs for a tighter control.

Accordingly, it is the object of the present invention to provide a control device and a method for controlling quality parameters of wastewater, by which the safe operation of the clarification process can be controlled in a simple manner.

The object is achieved for a generic control device in that the control device has at least one sensor, by which a quality parameter of the wastewater can be determined and transmitted as an electronic signal, and a transmission unit for transmitting determined, evaluated and / or stored sensor values of the sensor. The object is achieved for a generic method by measuring by means of a sensor quality parameters of the wastewater, the sensor values are transmitted directly or indirectly to a transmission unit and transmitted from this to a receiving unit.

By the device according to the invention, the control of the wastewater can be automated. By connecting the sensor to a transmission unit, the sensor values can also be controlled from a distance from the treatment plant monitored by the sensor. Due to the reduced staff control effort due to the easier access to the sensor data, the controls can be performed more frequently without increasing the overall control effort. As a result, the controlled by an appropriate control device sewage treatment plants with very low costs more reliable. The risk that such a treatment plant emits unpurified or only partially purified wastewater into the environment is reduced. The transmitted sensor values can be used to detect malfunctions and react immediately. Also from the The tendency of several consecutive sensorials can be recognized and reacted to risk situations. The same applies to the method according to the invention.

Further advantageous embodiments and modifications of the invention will become apparent from the features of the subclaims, the following objective description and the drawings.

The invention will now be described in more detail with reference to embodiments. Show it:

1 shows a view of a device for clarifying wastewater,

FIG. 2 is a top view of the device shown in FIG. 1; FIG.

3 is a schematic diagram of the pumping device,

Fig. 4 is a view of a common unit with a pump and a multi-way valve, and

5 shows an illustration of a control device for a sewage treatment plant.

In Fig. 1, a device 2 for clarifying wastewater with a clarifier 4 is shown, which has a clarification chamber 6 and two pre-chambers 8 in the embodiment. The clarification chamber 6 and the pre-chambers 8 are separated from each other by a partition 10. The dirty water 12 is first transported into an antechamber 8. From there, the dirty water 12 is pumped into the clarification chamber 6, and the clarified water 14 contained in the clarification chamber 6 is discharged from the pumping device. Device 18 pumped out of the device 2. In the exemplary embodiment, the two prechambers 8 are connected to one another by an overflow 16. The pumping device 18 sucks the dirty water 12 via an inlet 20 from an antechamber 8 into the clarification chamber 6, in which a clarification process can take place. After completion of the treatment process in the clarification chamber 6, timed or at a preselected maximum level in the prechambers 8 or the clarification chamber 6, the pumping device 18 pumps in the clarification chamber 6 existing clear water 14 into the drain 22nd

The arrangement of the pumping device 18 in the device 2 can be well understood from the view from above, which is shown in Fig. 2.

The inlet 20 extends from the pre-chamber 8 in the pumping device 18. The drain 22 extends from the pumping device 18 in a drain line, which dissipates the clear water from the device 2.

Notwithstanding the embodiment shown in FIGS. 1 and 2, the clarifier can have other shapes, the division of the individual chambers can be chosen differently, or there are several clarifier 4 is provided, through which the dirty water is passed successively. For the object of the invention, it is essential that a pumping device 18 is provided which is able to pump dirty water 12 from an antechamber 8 in a clarification chamber 6 and, optionally, also in the clarification chamber 6 existing clear water 14 in a sequence 22 can pump.

The terms "dirty water" and "clear water", "pre-chamber" and "clearing chamber" are used in this description in order to be able to assign the origin of the respective water from a corresponding chamber 6, 8, which passes through the water in succession. These terms do not mean that the dirty water 12 must still have significant contamination or that the clear water 14 must be fully clarified in any case, or that takes place in the antechamber 8 no clarification process. Rather, the pumping device 18 could also carry dirty water from the first pre-chamber 8 into the second pre-chamber 8 instead of the overflow 16, and pump the clear water present in the second pre-chamber 8 into a drain 22 which opens into the clarification chamber 6.

FIG. 3 shows an example of how a pump 26 can be connected to the inlet 20 and the outlet 22. The inlet 20 and the outlet 22 each open into a multi-way valve 24, to which the pump 26 is connected via a pipe section 28. In multi-way valve 24 is a slide 30 which is actuated by a servomotor 32. In Fig. 3, the slider 30 is shown in solid lines in a position in which he kiert blocking the connection of the inlet 20 with the pump 26. In dashed lines, the position of the slide 30 is shown, in which it blocks the drain 22. In a bidirectionally operable pump 26, this can when the slider 30 is in the dashed position, suck through the inlet 20 dirty water 12 into the pipe section 28 and convey the sucked dirty water 12 through a 26 located in the discharge opening in the clarification chamber 6. If the pump 26 carry clear water 14 out of the clarification chamber 6, the slide 30 is moved to the position shown in solid lines, so that the sucked by the pump 26 clear water 14 passes through the pipe section 28 into the drain 22 and in this way the clarification chamber 6 leaves. The portion of the multi-way valve 24, in which the slider 30 is movable, is bypassed by a bypass line 36.

The arrangement shown in the embodiment of a multi-way valve 24 is inexpensive to produce. The multi-way valve 24 may for example be made of suitably cut to length pieces of commercial PVC pipes that at a finished multi-way valve 24 are welded or glued together at the contact points. With appropriate dimensioning of the pipe sections used, it may also be sufficient simply to put the relevant components into each other. The structure of the multi-way valve 24 shown in the embodiment can be modified as needed.

In the embodiment shown in Fig. 3 is located in the region of the multi-way valve 24, a connection for a purge line 34. The purge line 34 opens into a portion in the multi-way valve 24, in which the slide 30 in a parking position, the purge line 34 can cover the entire surface. Pumps the pump 24, for example, clear water 14 in the direction of the drain 22, the movement of the slider 30 from the dashed position can be delayed in the position shown in solid lines, so initially in the pipe section 28 existing water through the inlet 20, if any, but also through the purge line 34 can leave the multi-way valve 24. Due to the delayed opening of the drain 22 may be discharged in this way first in the pipe section 28 any remaining waste water 12, before then pure clear water 14 is conveyed into the drain 22. When the water conveyed by the pump 26 is forced into the purge line 34, water flows from the end of the purge line 34 facing away from the multi-way valve 24 at a considerable speed. When the end of the purge line 34 is positioned to terminate close to the bottom of the clarification chamber 6, the water exiting the purge line 34 may agitate accumulated sediments in the bottom region, which may then be distributed either in the clear water 14 or through the inlet 20 or the drain 22 - depending on the position of the slider 30 and the spatial arrangement of the corresponding openings in the multi-way valve 24 in relation to the slide 30 - can pump out of the clarification chamber 6. The regular rinsing prevents sediment can settle permanently on the bottom of the clarifier 4 and from there only manually can be removed again.

Notwithstanding the embodiment, it is possible to form the multi-way valve 24 so that several feeds 20 and / or several processes 22 open into this. In this case, the multi-way valve 24 is to be redesigned accordingly, so that 30 different desired flow directions of the water moved by the pump 26 can be adjusted by a movement of the slider. Instead of a multi-way valve 24, the inlet 20 and the outlet 22 can also be opened or closed in each case by a separate slide 30, but the multiple slides 30 represent an increased outlay.

A slide 30 is actuated in the embodiment of a servo motor 32 as an actuator, but it can also be actuated passively, for example by the pump pressure. In the embodiment, the actuator is designed as a simple electromagnet, which is switchable in two positions. Such a solution is very cost effective. The movement of the servomotor 32 is transmitted to the slider 30 via a coupling rod. However, the servomotor 32 may also be designed as an electric motor, hydraulic cylinder, pneumatic cylinder and the like.

In the embodiment shown in Fig. 3, an aerator 38 is connected to the pump 26. In the exemplary embodiment, the aerator 38 consists of a truncated cone with an attached worm gear, in the rotation of which air is conveyed from an air feed space downwards in the conveying direction of the worm gear. If the aerator 38 immersed in water, air is continuously pressed into the surrounding water at a fast speed of the aerator 38. The oxygen contained in the air is needed by the bacteria to further process the chemical compounds contained in the waste water 12 into harmless substances as part of a biological clarification stage. In the version rungsbeispiθ! the aerator 38 fresh air through a vent tube 40. With a corresponding position of the slide 30 and a corresponding pipe guide of the inlet 20 and / or the drain 22, the fresh air can also be supplied from the pump 26 to the aerator 38. The pump is then suitable, in addition to the dirty water 12 and the clear water 14 in addition to promote air for the ventilation of the clarification chamber 6. However, the aerator 38 may also be designed as a separate, separate from the pump 26 component, which has its own drive and an independent of the pump 26 air supply.

The drive of the pump 26 may be effected by an electric motor integrated in the pump 26. Deviating from this, however, a motor 42 may also be disposed adjacent to the pump 26 to drive it via a transmission or V-belt, or a motor 42 drives only the aerator 38, or the motor 42 drives both the pump 26 and the aerator 38 at. The motor 42 may also be spaced from the pumping device 18 in the clarifier 4 or outside thereof.

The pump device 18 shown in Fig. 3 has in the embodiment shown there via an electronic control 46, which may also be designed as a control. By means of suitable software, the controller 46 controls the operation of the pump 26 and the switching position of the slider 30 via actuating signals to the servomotor 32. To allow the inflow of dirty water 12, the controller 46 turns on the pump 26 and gives the actuator 32 the control command to move the slider 30 into a position in which it closes the outlet 22 and the inlet 20 releases. In this way, the pump 26 can then suck dirty water 12.

As an alternative to a suction of dirty water 12 by the pump 26th this can - in particular if it is operable only in one direction of action - push a short flow of water into the inlet 20. If the pump 26 is stopped after a short pressure surge, then the water fed into the inlet 20 tends to run back and thereby create a suction for trailing dirty water 12. In this way, the inflow of dirty water 12 can be effected in the clarification chamber 6, without the entire volume of the entering into the clarifier 6 dirty water 12 would have to be pumped.

If clear water 14 are to be discharged from the clarification chamber 6, the controller 46 switches on the pump 26 and gives the servomotor 32 the command to move the slide 30 into a position in which it closes the inlet 20 and releases the outlet 22. In addition, the controller 46 may turn on the pump 26 or the motor 42 to aerate the water present in the clarification chamber 6. Depending on the design of the pumping device 18, the controller 46 can also switch the aerator 38 on or off in isolation.

The inlet 20 is connected via a connecting line with a sensor 48, can be determined via the quality parameters of the conveyed through the inlet 20 dirty water 12.

For example, the sensor 48 may measure turbidity, pH, salinity, oxygen content, or other parameters that are important in determining water quality. Also special measurements, such as the BOD and / or the COD value can be determined sensor-based. It is also possible to monitor whether certain unauthorized chemicals are being discharged into a treatment plant, such as oil, which should not be released into the environment. The measurement of the sensors 48 can be continuous or discontinuous. Depending on whether the data determined by the sensor 48 are moving within predefined control values or not, the controller 46 can switch the device 2 or its components to a fault mode as a function of the sensor data transmitted thereto. The fault mode may be that the inlet 20 or the drain 22 are blocked by the slide 30, the pump 26 is shut down and / or an alarm signal is output. The alarm signal can be transmitted optically, acoustically, electrically and / or by radio. The determined sensor data can also be stored by the controller 46 or by the sensor 48 itself, so that on the basis of the stored data, a documentation about the respectively determined sensor values is available.

In a preferred embodiment, the sensor 48 is installed in a housing which is connected via a releasable terminal 50 to the connecting line. In this way, the sensor 48 is easily replaceable, for example for inspection or maintenance purposes. The sensor 48 may be incorporated in a container which is watertight, so that an amount of water can be stored and controlled in the container. In a preferred embodiment, the container has a separate inlet and outlet opening, via which the container can be filled with a test batch and emptied again after a test run. The container is from the connection line, with he connected to the inlet and outlet 20, 22, separable.

In Fig. 4 is a suggestion as the pump 26 and the multi-way valve 24 can be mounted as a common unit in the device 2. The multi-way valve 24 is installed together with the pump 26 in a housing 44 which surrounds these components. The assembly of the unit realized in this way is simple in that the housing 44 is suspended in a clarification chamber 6 or fastened there to a wall. As housings 44 are again standard tubes, for example made of PVC, usable, which are inexpensive to procure and edit.

In Fig. 5, the control device 52 is shown in more detail. The control device 52 has one or more sensors 48 that have contact with a sample amount of the wastewater to be examined. The sensor values determined by the sensor or sensors 48 can be transmitted as an electronic signal via lines 54 to a computer chip 56. From the computer chip 56, the sensor data can be projected beyond a transmission unit 58. The transfer unit 58 can be integrated in the computer chip 56 or executed as a separate component. The transmission unit 58 is designed such that it can transmit detected, evaluated and / or stored sensor data of the sensor or sensors 48, in particular in electronic form. The transmission from the transmission unit 58 may be wired, for example via telephone or power cable, or via a radio link, such as for example according to the usual for mobile phone networks GSM standard. By using existing networks, such as the power, telephone and mobile phone networks, the installation costs for the installation of the control device 52 is reduced because only the control device 52 itself must be installed.

The transmission of the sensor values can be continuous, timed, volume-dependent, dependent on the measured value or dependent on other parameters. Filtering of the sensor values to be transmitted may be expedient in order to reduce the accumulated data volume, which indicates measured values in uncritical regions. The filtering of the resulting sensor values is already to be regarded as an evaluation of the resulting data. However, it may also be provided to transmit all resulting sensor values in order to check the correct operation of the system on the basis of the transmitted data and to store them in a remote location by means of to document the sensor values for a given period of time.

In the embodiment shown in Figure 5, an additional operating unit 60 is provided between the computer chip 56 and the transmission unit 58, which is exemplified as a radio device, which has a keyboard 62 and a display 64. In addition, the operating state can be displayed via control lights 66. The control unit 60 is not necessarily required for a functioning control device 52, but it facilitates the installation and use of the control device 52. The control unit 60 can be supplemented with useful functions, or even be used in a slimmed-down version. The operating unit 60 is connected via a line 54 to the computer chip 56.

The computer chip 56 may be part of a controller 46, with which the function and operation of the pump 26, the servo motor 32 and / or the aerator 38 is controllable, or the controller 46 is integrated into the computer chip 56. The controller may also be integrated into the operating unit 60. In the exemplary embodiment, the control commands of the controller 46 are transmitted to a switching unit 68, which switches the flow of current to the pump 26, the servomotor 32 and the aerator 38. In addition, a heating device and / or cooling 70 is switched on or off by the switching unit 68, which may be required in order to establish certain measuring conditions for determining the sensor values.

The computer chip 56 or the operating unit 60 may be designed so that they additionally comprise an evaluation unit, not shown. The evaluation unit can evaluate the sensor values of the sensors 48 by software control, for example by comparing the sensor values with programmed threshold values. If a sensor value exceeds a threshold value, for example, if the pH value of a waste water sample is determined by the sensor 48 to be 6.8 and thus below a threshold value. nem programmed threshold of 7.0 iiegt, so the evaluation can be made in such a way that an alarm or the sewage treatment plant of the control device 52 and their control 46 is switched to a fault mode. For this purpose, the control device 52 can transmit a corresponding signal to the control 46, or the control device overrides the control 46 with its signals. The alarm can be effected by a signal is output to a remote receiving unit 74 via the transmission unit 58, which indicates an inadmissible operating state of the sewage treatment plant. An alarm condition may also be indicated by the control lights 66 or by an audible alarm sound. Due to the alarm can be alerted by the receiving unit 74 from a Entstördienst, which checks the sewage treatment plant and eliminates malfunction. The fault mode may be configured such that the controller 46 blocks the operation of the pump 26 so that wastewater is no longer carried by the pump 26 or the servomotor 32 is switched to move the spool 30 to a closed position the effluent is stopped by not or only insufficiently clarified wastewater.

In addition to or instead of the protective measures explained above, the fault mode can also provide measures by which the quality parameter whose sensor value has exceeded a threshold value is returned to a normal range. Thus, in the fault mode, the aerator 38 could be switched on or switched to maximum power to introduce a larger amount of oxygen into the wastewater, or a quantity of a basic substance is passed into the wastewater to raise the pH to a non-critical range or to neutralize ammonia present in the wastewater, or certain bacterial cultures are added to the relevant clarification chamber 6 in order to stabilize the clarification process. The computer chip 56 and / or the evaluation unit, the operating unit or the controller 46 can store the sensor values so that they can be automatically transmitted, interrogated or read out via the operating unit 60 at a later point in time. The storage of the sensor values may be advantageous in order to prove the proper operation of the installation in a documentation period to approval or supervisory authorities.

Preferably, the sensor or sensors 48 are arranged in a measuring chamber 72, which can be filled or emptied with wastewater completely or partially via the connections 50. The ports 50 connect the measuring chamber 72 with a clarifier 4 or a sewer pipe in the form of an inlet 20 or drain 22, from which a sample can be removed. The measuring chamber 72 can be forcibly emptied by a slide, not shown, or the terminal 50 is arranged and formed so that a forced replacement of the sample chamber located in the measuring chamber 72 results from wastewater, for example by means of a flow of sewage through the measuring chamber 72, by the drain port depressurized in a clarifier 4 opens, or the measuring chamber 72 is disposed above the clarifier 4, the inlet 20 or the drain 22, so that the measuring chamber 72 is filled with a pressure increase in the line and the evacuation due to gravity inevitably at a later Pressure drop or emptying of the line takes place.

According to an advantageous embodiment, the control device 52 and the measuring chamber 72 are arranged in a common housing. In this way, assembly and wiring errors in the installation of the control device 52 are avoided in a sewage treatment plant. The control device 52 can be splash-proof integrated into the housing of the measuring chamber 72. The assembly of the common housing is carried out by the connection of the measuring chamber 72 to abwasserführ- de lines and the assurance of sufficient power to the control device 52. Thus, the control device 52 is already ready. The entire assembly is easily replaceable as a module, for example, for maintenance purposes. To avoid measurement errors, it is advantageous to exchange the control device 52 with the measuring chamber 72 at regular time intervals, for example every 2 to 5 years, to clean and to check the function. The control device 52 may be provided with its own energy storage device, for example a rechargeable battery, in order to bridge disturbances and fluctuations in the power supply and to indicate the impending failure of the control device 52 in the event of a power failure by an alarm signal. The control device 52 is also connectable to a module for generating solar power, by which the sufficient power supply is ensured. The control device 52 can be operated with any power supply voltages, in particular 12 V and / or 220-240 V.

A data processing system 76 can be connected to the receiving unit 74 with which the received sensor values can be stored and / or further processed in an individualized manner. In order to enable individualized processing, the sensor values must be transmitted by the transmission unit in an individualizable form. The individualization can be carried out by a specific identifier, which transmits the transmission unit together with the sensor values to be transmitted. In addition to the identifier, further data may be appended to the sensor values, such as urgency, date / time, serial number of the measurement and / or transmission, wastewater temperatures, and the like. The specific identifier and the additional information can be transmitted as a digital, arbitrated data set that is easily automated and digitally processed by the data processing system. The data record is structured in such a way that the data record to be transmitted has a specific, precisely defined length, and certain information in the record is noted at a particular location of the transmitted record.

The data processing system 76 can have the received and possibly evaluated or processed data available on a server 78. For example, wastewater treatment plant operators can check at any time whether their treatment plant is operating properly, or regulators can verify compliance with certain limits, or the data is accessed for billing purposes.

According to a further embodiment of the invention, the data processing system 76 may also be equipped so that it emits queries about the operating state of certain or all connected sewage treatment plants to the respective control devices 52 via the receiving unit 74. For this purpose, the transmission unit 58 of the control device 52 via a receiving module not shown in detail, which determines the requested sensor values upon receipt of a remote query and transmitted to the receiving unit 74. The remote inquiry is thus electronically processed by the receiving module of the transfer unit 58 with a suitable software. In this way, the network can be operated so that during the day only important breaking news is transmitted and the data exchange in this way has a low volume, while the remaining data are transmitted at night, when the existing data networks are less busy and the data transmission is therefore relatively cheap ,

The method according to the invention makes use of the procedures proposed above, that is, the above objective description also applies correspondingly to the method according to the invention. Overall, the controing device according to the invention and the method according to the invention enable safe operation of sewage treatment plants, in particular small sewage treatment plants. Through the use of the control devices according to the invention a plurality of wastewater treatment plants can be monitored with a comparatively small effort without interruption in their operation and the delivery of insufficiently purified wastewater to the environment can be prevented. The documentation of the measured values also allows a subsequent control of the processes in the sewage treatment plant, also with regard to the eventual introduction of prohibited substances into the sewage treatment plant. By the control device 52, it is possible to increasingly use decentralized, privately operated small wastewater treatment plants safely, through which the public sewerage network is relieved and thus investment in public sanitation networks can be reduced.

Claims

claims

1. Control device (52) for wastewater, characterized in that the control device (52) at least one sensor (48), by which a quality parameter of the waste water can be determined and transmitted as an electronic signal, and a transmission unit (58) for the transmission of evaluated, evaluated and / or stored sensor values of the sensor (48).

2. Control device (52) according to claim 1, characterized in that the control device (52) additionally an evaluation unit, which evaluates and / or stores the determined sensor values, and the evaluation unit with the sensor (48) and / or the transmission unit (58) connected is.

3. Control device (52) according to claim 1 or 2, characterized in that the sensor (48) is arranged in a fillable with waste water measuring chamber (72) via at least one connection (50) to a sewer and / or a clarifier ( 4) can be connected.

4. Control device (52) according to claim 3, characterized in that the control device (52) and the measuring chamber (72) are arranged in a common housing.

5. Control device (52) according to any one of the preceding claims, characterized in that in the measuring chamber (72) a heating device (70) for heating the in the measuring chamber (72) located wastewater is arranged.

6. Control device (52) according to any one of the preceding claims, characterized in that the control device (52) with a controller for a Pump device (18), an aerator (38) and / or a control device for a multi-way valve (24) connectable to control the sewage flow or from the control device (52), the pump device (18), the aerator (38) and / or the control device for a multi-way valve (24) is controllable.

7. Control device (52) according to one of the preceding claims, characterized in that the control device (52) is switchable to a fault mode when the sensor (48) detects a sensor value that exceeds stored thresholds.

8. Control device (52) according to any one of the preceding claims, characterized in that the transmission unit (58) consists of a radio device with which the determined, evaluated and / or stored sensor value by radio signal to a receiving unit (74) is transferable.

9. Control device (52) according to any one of the preceding claims, characterized in that the transmission unit (58) has a receiving module, from the electronic remote queries are receivable and electronically processed.

10. Control device (52) according to any one of the preceding claims, characterized in that at least one sensor (48) for measuring the pH of the waste water and / or at least one sensor (48) for measuring the oxygen content of the waste water is present.

11. Method for monitoring quality parameters of wastewater, characterized in that quality parameters of the wastewater are measured by means of a sensor (48), the sensor values are transmitted directly or indirectly to a transmission unit (58) and transmitted by the latter to a receiving unit (74).

12. The method according to claim 11, characterized in that the sensor values are cached before their transmission and / or evaluated by an evaluation unit.

13. The method according to claim 11 or 12, characterized in that an electronic interrogation signal from a receiving unit (74) to the receiving module of the control device (52) transmitted and the interrogation signal from the control device (52) to a transmission of determined, evaluated and / or stored sensor values of the sensor by the transmission unit (58) to the receiving unit (74) is further processed electronically.

14. The method according to any one of claims 11 to 13, characterized in that when determining a sensor value that exceeds defined thresholds, by the sensor (48), a control device (52) is switched electronically in a fault mode.