FR3025194A1 - EFFLUENT TREATMENT SYSTEM INCLUDING DYSFUNCTION DETECTION - Google Patents

Abstract

The invention relates to an effluent treatment system, comprising: a settling tank (1) receiving the raw effluents, a sludge level detector (4) in the settling tank (1), a purification device (2) located downstream of the settling tank (1), characterized in that the treatment system also comprises: a water level detector (5, 6) arranged to detect a representative water level overrun of a malfunction of the purification device (2), an alert box (8) indicating on the one hand a threshold exceeding by the sludge level detector (4) and on the other hand a threshold exceeding by the water level detector (5, 6).

Description

FIELD OF THE INVENTION The invention relates to an effluent treatment system including a malfunction detection. The invention also relates to a detection system used by this effluent treatment system.

The invention also relates to a detection method associated with this effluent treatment system. This effluent treatment system usually treats the effluents of a building, preferably a dwelling. BACKGROUND OF THE INVENTION In an effluent treatment system, a periodic control of the proper functioning in the effluent treatment system aims at preventing a sudden failure of this effluent treatment system, thus preventing the evacuation of the wastewater from the building. or dwelling.

This treatment system successively comprises a settling tank followed by a purification device. According to a first prior art, it is known an effluent treatment system which is provided with a prefilter placed on the outlet of the settling tank, designed to block the sludge spill when precisely the settling tank is too full of these sludge. Thus, the purification device is no longer likely to be clogged by an overflow of sludge from the settling tank. This effluent treatment system has several major disadvantages. First, it forces the user, who is usually the owner of the building or dwelling, to make a maintenance as regular and unpleasant. Then, it does not allow to obtain measurement of sludge in the settling tank, then compelling the user either to anticipate the emptying of the settling tank, which entails a useless cost, or to wait for an unavoidable blockage. of this same settling tank.

The presence of a prefilter arranged upstream of the filter, if it protects the filter from a potential degradation caused by an overflow of sludge from the settling tank, does not make it possible to anticipate the operating problems while maintaining the maintenance of the installation, if not at least, at least at a reasonable level.

According to a second prior art, it is known an effluent treatment system which comprises a warning device generally consisting of a rod surmounting a float. When the rod rises above a certain level, the user must control his installation and proceed to a reordering. This is the case, for example, for the brands ClearFox, X-15 Perco and Compact'O ST (registered trademarks and approval numbers in France respectively 2014-08, 2013-12 and 2014-11). These warning devices, however, have certain practical limitations. On the one hand, the user must think about going to his station to see the state of the stem. On the other hand, when the rod reaches the warning threshold, it is because the filter has already undergone notable degradations requiring urgent intervention. This system has on the one hand the disadvantage of being restrictive for the user, and on the other hand to be curative rather than preventive. According to a third prior art, for example described in the European patent EP 1842974, it is known an effluent treatment system 25 which comprises a sludge level detector. The presence of the sludge level detector makes it possible to anticipate the failures whose origin would be an excessive level of sludge in the settling tank. However, this effluent treatment system does not allow the anticipation of failures that would not be caused by an excessive level of sludge in the settling tank.

SUMMARY OF THE INVENTION The object of the present invention is to provide an effluent treatment system at least partially overcoming the aforementioned drawbacks.

More particularly, the invention aims at providing an effluent treatment system which incorporates a detection system making it possible to anticipate more faults of different origins while avoiding or reducing the costly operations of unnecessary or unnecessary maintenance, in particular by allowing advantageously to discriminate certain failures 10 between them. For this, the invention aims to provide an effluent treatment system comprising several different types of detectors which could be considered by those skilled in the art as redundant, and therefore as too expensive for their utility. Indeed, these different detectors make it possible to signal that the installation is clogged, often at the level of its purification device. In fact, being able to have the information coming from these different detectors will help the user to discriminate between them at least some breakdowns, and thus to react in a more appropriate manner to carry out the maintenance of his installation, in particular by determining for which Because its installation is clogged. The presence of an alarm box centralizing and providing, one way or another, these different information to the user, centrally, particularly helps the user to perform appropriate maintenance by reacting quickly, and this, at least effort or at least for reduced effort. In addition, according to embodiments of the invention, this best compromise between anticipation of failures on the one hand and on the other hand limitation of the cost of maintenance, is achieved by alleviating the constraints on the user, or even by greatly reducing these constraints on the user.

This best compromise makes it possible to improve the monitoring efficiency of the installation constituted by the proposed effluent treatment system, while reducing the constraints on the user, and in particular by reducing the possibilities of occurrence of an oversight of user 5 with consequences if not unfortunate for the state of his installation. For this, more information and / or provided more often and / or provided at the best times, will help the user to react more quickly and / or more appropriately and / or at the cost of less effort. To this end, the present invention provides an effluent treatment system, comprising: a settling tank receiving the raw effluents, a sludge level detector in the settling tank, a purification device located downstream of the sludge tank; decantation, characterized in that the treatment system also comprises: a water level detector arranged to detect a water level overflow which is representative of a malfunctioning of the purification device, an alert box indicating on the one hand a threshold crossing by the sludge level detector and on the other hand a threshold crossing by the water level detector. The settling tank receiving the raw effluents can be for example either a septic tank or a primary clarifier. The water level detector is associated with the purification device so that, when the purification device is malfunctioning and the water level, preferably at the level and downstream of this purification device, or possibly also upstream of this purification device, rises as a result of this malfunction, the water level detector detects the rise in the water level, at least when this rise in the water level exceeds a certain threshold. The purification device may be, for example, either a filter whose filtering function rids the wastewater leaving the settling tank of at least a part of their pollution which is often in soluble form, or bacterial aggregates produced then released in the waste water leaving the settling tank so as to trap or absorb at least a portion of their pollution which is often in soluble form. The purification device advantageously works by adsorption and by biological oxidation of this soluble pollution.

Preferably, the water level detector is located at and / or downstream of the purification device. Preferably, the threshold overflow by the sludge level detector is indicated separately from the threshold exceeding by the water level detector, and advantageously at the level of two distinct indicators 10 one of the other. Preferably, in the event of malfunction of the purification device not caused by excessive sludge level, the detectors are arranged in such a way that the threshold crossing of the water level detector occurs before the threshold of the level detector is exceeded. 15 sludge. Preferably again, in the event of a malfunction of the purification device caused by an excessive sludge level having caused the sludge to overflow in the purification device, the detectors are arranged in such a way that the threshold of the water level detector is exceeded. occurs after the threshold of the sludge level sensor has been exceeded. Thus, the origin of breakdowns or the risk of breakdowns can be discriminated more easily. To this end, the present invention also provides an alert box for an effluent treatment system that includes a sludge level sensor in a settling tank receiving raw effluents and a water level detector arranged in a controlled manner. detecting a water level overflow that is representative of a malfunction of the purification device located downstream of the settling tank, indicating on the one hand a threshold exceeding by the sludge level detector and secondly a threshold exceeded by the water level detector.

To this end, the present invention also provides an effluent treatment system detection system, comprising: a sludge level detector in a settling tank receiving raw effluents, a water level detector disposed of in order to detect a water level overrun which is representative of a malfunction of the purification device located downstream of the settling tank, an alarm box indicating, on the one hand, a threshold crossing by the level detector. sludge and on the other hand a threshold crossing by the water level detector. To this end, the present invention further provides a method for detecting an effluent treatment system, comprising: a sludge level detection in a settling tank receiving raw effluents, a water level detection representative of a malfunction of a purification device located downstream of the settling tank, an alert display indicating on the one hand a threshold overflow during the detection of sludge level and on the other hand a threshold overflow during 15 water level detection. More generally, the present invention provides a treatment system that will use several detectors capable of signaling that the installation is clogged, particularly at its purification device, so that may appear redundant. However, in fact, to provide the user with these various information will not only indicate that his installation is blocked, but also help him to discriminate between several possible causes for this failure. The invention then proposes an effluent treatment system, comprising: a settling tank receiving the raw effluents, a sludge level detector 25 in the settling tank, a purification device located downstream of the settling tank, characterized in that the treatment system also comprises a water level detector arranged to detect a water level overflow which is representative of a malfunction of the purification device.

According to preferred embodiments, the invention comprises one or more of the following features which may be used separately or in partial combination with each other or in full combination with one another. All or part of these characteristics can be used with any of the objects of the invention previously presented. Preferably, the alert box is able to display the indications of exceeding the threshold. The user can therefore read all of the information relating to the state of the different parts of his installation constituted by the effluent treatment system. Preferably, the alarm box is able to display the indications for exceeding the threshold, in the form, for each threshold, of a light indicator 10 illuminated for exceeding the threshold and another indicator light on for the threshold. not exceeding the threshold. In a very simple way, for each detector, the operating state or malfunction immediately appears to the user. Then, the various operating state or malfunction combinations for the different detectors correspond to different types of potential faults, again helping the user to simply perform a relevant diagnosis. In a first preferred embodiment, the settling tank is a septic tank, and the purification device is a filter, that is to say a filtering device essentially comprising a filter. The presence of a filter, which can become clogged, makes it particularly interesting to know why this filter may clog, to deduce the appropriate maintenance operation to reduce or eliminate this risk of clogging. filter, and this at the least cost of maintenance, since the planned maintenance operation will be better targeted and therefore more relevant. The filter is advantageously a filter whose main filter element essentially comprises pieces of pine bark. The installation is for example an effluent treatment system involving a septic tank followed by a filter in which the water flows, by gravitation, during its treatment, the treated water then being discharged by a separate device. The installation may also be for example an effluent treatment system involving a septic tank followed by a structure using the soil in place or an artificial layout to ensure simultaneous treatment and disposal of effluents. This book, without having the usual structure of a filter, can be considered as such, since it performs a similar filtering function. In a second optional embodiment, the settling tank is a primary clarifier, and the purification device is a system producing, in the decanted effluents, bacterial aggregates absorbing at least a portion of the pollution of these decanted effluents.

The invention is also interesting, but less critical, because of the lack of filter in this type of installation. The installation is for example a micro-station effluent treatment system consisting mainly of a tank comprising an electromechanical device for supplying and mixing oxygen in the water, in combination with a decantation.

Preferably, the sludge level detector is structured so that the threshold crossing by the sludge level detector occurs before the sludge arrives at the purification device. Thus, it becomes even easier to discriminate between an obstruction of the purification device caused or likely to be caused by a sludge overflow, the sludge level detector exceeding its threshold before the level detector. water, and on the other hand an obstruction of the purification device caused or likely to be caused by a failure exclusively located at the purification device, for example a crushing of the duct caused by a tree root, the level detector 25 water then exceeding only its threshold, the sludge level detector does not exceed his. Preferably, the sludge level detector is arranged so that, when the sludge level sensor reaches the threshold, the settling tank can still accumulate an additional 5% sludge, preferably 10%, still more preferably 20%, of the already accumulated sludge volume, before the sludge arrives at the purification device. Thus, thanks to a certain margin, the failure can be anticipated and avoided, even in the event of a late reaction from the user, at the cost however of a settling tank emptying a little more frequent than strictly necessary.

Preferably, the sludge level detector is disposed lower in the settling tank than the outlet of the settling tank for the settled effluents. This makes it possible to detect an excessive level of sludge in the settling tank before the sludge can start to flow into the purification device.

Preferably, the water level detector comprises a mobile float whose displacement closes an electrical circuit when the threshold of the water level is exceeded, said excess corresponding to a variation, in height, of the water level preferably. less than 10 cm, more preferably less than 4 cm, more preferably less than 2 cm.

Any noticeable increase in the water level at the purification device probably reflects a noticeable dysfunction in the same purification device. The sooner this one is detected, the better. For faster detection, an increased sensitivity of the detector responsive to a lower increase in the water level is of particular interest. Preferably, the alert box is able to send, by wireless link, the indications of exceeding the threshold, to a receiver remote on the one hand with respect to the settling tank and the purification device and secondly relative to the alert box, the receiver having a man-machine interface able to warn a user of these indications of exceeding the threshold. Thus, the monitoring of the installation is facilitated for the user who no longer has to move at the alert box, usually located outside the building, but the user can instead perform a remote monitoring staying inside the building. The receiver is for example a fixed station having an internet connection, the indications being sent via this internet connection. The human machine interface is for example a display screen. Preferably, the receiver is a portable telecommunication equipment. Thus, the monitoring of the installation is even more facilitated for the user who is no longer compelled to remain in the building but who can remotely monitor any place, even remote from the building and the treatment system. effluents from the same building. The portable telecommunications equipment is for example a mobile phone or a smartphone.

Preferably, the water level detector is placed above the water inlet level in the purification device. Thus, the risk of false alarm, simply due to a temporarily too sudden arrival of wastewater from the settling tank, is considerably reduced.

Preferably, the alert box stores information that is sent periodically by the detectors and which is related to the status of the detectors. Thus, the state of the various parts of the installation is monitored regularly, or almost in real time at the time of arrival of the failures (which is not instantaneous for this type of installation), 20 allowing the user to better anticipate the arrival or the risk of arrival of a breakdown. This information can tell if the threshold is or is not yet reached. This information can give more precisely the value of the levels reached by the detectors, thus making it possible to monitor the risk of failure which is even finer, at the expense of more frequent monitoring by the user. Preferably, the alert box, on the one hand if no threshold is exceeded, sends to a remote receiver the stored information either periodically and at the request of the remote receiver or only at the request of the remote receiver, and on the other hand, in case of exceeding at least one threshold, always sends an alert to the remote receiver. The compromise between the frequency of sending information to the user on the one hand and the relevance of the information sent related to the probability of reaction in time of the user in case of risk of failure on the other hand is thus improved. In the case where the signal is sent to the remote receiver only at the request of the remote receiver, it is for example an application on the remote receiver which will remind the user to request, the alert box, the sending information about the condition of the detectors. The sending, in the event that no threshold is exceeded, of the stored information, only at the request of the remote receiver, advantageously corresponds to an alert box powered by an autonomous source of 10 battery or battery type. The sending, if no threshold is exceeded, of the stored information, periodically and at the request of the remote receiver, advantageously corresponds to an alarm box supplied by the sector. Preferably, the water level detector is the main water level detector located at the purification device, and the system comprises an auxiliary water level detector located downstream of the purification device, the detector the water level is lower than the main water level sensor. Thus, the presence of two water level detectors, respectively disposed at and downstream of the purification device, allows the user to discriminate between a malfunction or a risk of malfunction of the purification device. -example, clogged filter for example, and secondly a malfunction or a risk of malfunction downstream of the purification device, for example a damage to the sewage pipe 25. Preferably, the system is a system for treating the effluents of a building whose sanitation is non-collective, preferably a dwelling. A building whose sanitation is non-collective is a building that does not have a sewer at all. The effluent treatment system then makes it possible to remotely control the proper operation of a septic tank and biofilter-type installation in order to sanitize a residential building, or an equivalent room such as an office, a building or a building. small building, a school building, a museum or even a village hall. Other features and advantages of the invention will appear on reading the following description of a preferred embodiment of the invention, given by way of example and with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 schematically represents an example of an effluent treatment system according to one embodiment of the invention. FIG. 2 diagrammatically represents an example of a water level detector for an effluent treatment system according to one embodiment of the invention.

Figure 3 schematically shows an example of a display panel of an alert box according to an embodiment of the invention. FIG. 4 schematically represents an example of correspondence between, on the one hand, the LEDs of the display panel shown in FIG. 3 and the indications relating to the state of the processing system according to one embodiment of the invention. FIG. 5 diagrammatically represents an example of the steps of a detection method in an effluent treatment system according to one embodiment of the invention.

DETAILED DESCRIPTION OF THE INVENTION FIG. 1 schematically represents an example of an effluent treatment system according to one embodiment of the invention. The straight arrows in solid lines represent the circulation of the effluents first and then the wastewater, once the effluents have been cleared of their sludge, in the effluent treatment system. The dashed arrows represent the flow of information data from the detectors to the alert box. The zigzag arrows represent the transmission of this information data or their contents, advantageously via a wireless link, to receivers remote from the alert box. The effluent treatment system successively comprises a settling tank 1, a purification device 2, a discharge pipe 3. The settling tank 1 is here a septic tank 1, and the purification device 2 is here a device for cleaning. However, the operation for a treatment system using a primary clarifier 1 followed by a system 2 producing, in the settled effluents, absorbent bacterial aggregates, is similar, except that the treated water leaves the purification device 2 by overflow and not by evacuation at the bottom. Septic tank 1 comprises sludge 10 located in the bottom of this septic tank 1. The sludge 10 rises in septic tank 1 to a level 11 of sludge. The effluents, after having got rid of their muds 10 fallen to the bottom of the septic tank 1, leave the septic tank 1 via the outlet 12. A sludge level detector 4 sends a threshold exceeding information to a housing 8, when the level 11 of the sludge reaches this sludge level detector 4. The sludge level detector 4 is located below the outlet 12, so that the threshold overshoot information is sent to the alert box 8, before the sludge level 11 can reach the outlet 12 and that the sludge 10 begins to flow through the outlet 12 into the purification device 2 which may then be damaged. The sludge level detector 4 may for example be a sludge level detector such as that described in patent EP 1842974. If all goes well, in normal operation of the installation, the emptying of the septic tank 1 will be done usually for a house every 5 to 7 years.

3025194 14 The wastewater, after leaving the septic tank 1 through the outlet 12, enter through the inlet 22 in the purification device 2. This purification device 2 comprises a filter 7 through which the wastewater 20 flow by gravitation, before being discharged through the outlet 23 of the purification device 2. The wastewater 20 rises to a level 21. A main water level detector 5 is located above the inlet 22 When there is a problem with the filter 7, the wastewater does not pass through this filter 7 properly and the water level 21 starts to rise above the inlet 22 until it reaches the level of the filter 7. the main water level sensor 5, then this main water level detector 5 sends a threshold exceeding information to a warning box 8. The water level detector 5 operates for example according to the principle presented in Figure 2. In the preferential case of a disp Purification os 2 similar to that presented in patent application PCT / FR2014 / 050629, the float of the main water level detector 5 will for example be placed in the distribution distribution at the head of the spreading network. The wastewater, after leaving the purification device 2 through the outlet 23, arrives in the discharge pipe 3. The purified wastewater 30 circulates in the discharge pipe 3, which they leave through the outlet 32 20 where they are discharged from the effluent treatment system. When the level 31 of the purified wastewater reaches an adjoining water level detector 6, which happens when the purified wastewater can no longer be properly discharged through the outlet 32, this water level detector 6 sends a threshold exceeding information to the alarm box 8. As soon as the alarm box 8 receives a threshold overshoot information from one of the detectors 4 to 6, it can firstly display this information of exceeding the threshold on its display device 80, and on the other hand transmit this threshold exceeding information to one and / or the other of the remote receivers which are a fixed computer 81 and a mobile phone 82. A housing remote alarm inside the building 3025194 15 or housing, for example at the fixed computer 81, warns the user when the sludge 10 are close to reach a critical level in the septic tank 1 The user must then drain his septic tank 1. This detection system has the advantage of being preventive; indeed, this alarm indicates that it is necessary to drain the septic tank 1 before sludge 10 escapes towards the filter 7 which is thus preserved. In addition to transmitting their threshold overshoot information to the alert box, detectors 4 to 6 can also trace back either the threshold not exceeding or even the sludge and water level values. The warning box 8 operates advantageously on batteries. The warning box 8 is connected to each of the detectors 4 to 6 advantageously by a separate electrical cable. The warning box 8 can consume very little energy by only occasionally interrogating the sludge level and water level detectors to centralize the information relating to the state of these detectors. For example, the alarm box 8 can interrogate the detectors for one second every ten minutes. FIG. 2 diagrammatically represents an example of a water level detector for an effluent treatment system according to one embodiment of the invention. The water level detector comprises a column 55 in which a float vertically slides which rests on the water level. In a first position, the float 53 rests on the level 51 of the waters 50. The float 53 is located substantially below an electrical circuit 56 which remains open. The level 51 of the waters 50 is relatively low, which corresponds to normal operation, the threshold of the water level detector is therefore not reached. No threshold crossing signal is sent from the water level sensor to the alert box. In a second position, the float 54 rests on the level 52 of the waters 50. The float 54 is situated just below and in contact with an electric circuit 56 which is closed by the float 54. The level 52 of the waters 50 is relatively high, which corresponds to abnormal operation, the threshold of the water level detector is not only reached but still exceeded. When the float 54 closes the electrical circuit 56, a threshold exceeding signal is sent by the water level detector to the alert box. The rise of a height H of the float in the column of the water level detector corresponds to the critical exceeding of the water level threshold, exceeding the threshold immediately indicated by the water level detector to the warning box. . Only the detection principle has been presented, a real detector will have other elements, in particular to prevent the water from coming into contact with the electrical terminals of the circuit 56. FIG. 3 schematically represents an example of a control panel. display of an alert box according to one embodiment of the invention. The alert box has a display panel 90. A cover, not shown, which covers this display panel 90, is flush with the surface of the ground in the vicinity of the effluent treatment system. On this display panel 90, there is a button 91 and indicator lights 92 to 98. FIG. 3 corresponds to an effluent treatment system which has only one water level detector which is located in the purification device. The indicator lights 92 to 98 are, for example, light-emitting diodes 20. The button 91 controls, by a single press of this button 91, the activation of the display, that is to say the lighting of the LEDs 92 to 98. The user will control the warning box display advantageously at least once a quarter, to check the status of each of the LEDs 92 to 98. Each of the LEDs 92 to 98 corresponds to information. Some LEDs form pairs, one of the LEDs glowing green when all is well, and the other LED lighting up red when there is a problem. The presence of two LEDs is safer than the presence of a single LED on or off, because it allows not to confuse one of the states with a LED failure.

The indicator 92 illuminates green when the level of sludge in the septic tank is normal; on the contrary, it is extinguished when the level of sludge in the septic tank exceeds a threshold and becomes abnormally high. The indicator light 93 lights red when the level of sludge 5 in the septic tank exceeds a threshold and becomes abnormally high, which means that the septic tank must be drained; on the contrary, it is extinguished when the level of sludge in the septic tank remains normal. The indicator 94 lights green when the water level in the purification device remains normal, which means that the state of the filter 10 in the purification device is compliant; on the contrary, it is extinguished when the water level in the purification device exceeds a threshold and becomes abnormally high, which means that the state of the filter in the purification device is degraded and that it must either be rehabilitated or replace it or contact a repairer who can restore it or replace it. The indicator light 95 lights up red when the water level in the purification device exceeds a threshold and becomes abnormally high, which means that the state of the filter in the purification device is degraded and that it is necessary to either repair or replace it, or contact a repairer who can repair or replace it; on the contrary, it is extinguished when the level of water in the purification device remains normal, which means that the state of the filter in the purification device is in conformity. The indicator 96 lights green when the battery supplying the alert box is sufficiently charged to allow the alert box to function properly; it is, on the contrary, switched off when the electric battery supplying the alarm box is insufficiently charged to allow the alarm box to function properly. The indicator 97 lights red when the electric battery supplying the alert box is insufficiently charged to allow the alert box to function properly; it is on the contrary switched off when the electric battery supplying the alarm box is sufficiently charged to allow the alarm box to function properly. The indicator 98 lights up in green color when an electronic transmission of information from the alarm box to a remote receiver is in progress; on the contrary, it is off when there is no teletransmission of information in progress from the alert box to a remote receiver. The remote transmission can be carried out using a short-range connection, for example using a Bluetooth® connection, or a WIFI® connection. FIG. 4 schematically represents an example of a correspondence between, on the one hand, the LEDs of the display panel represented in FIG. 3 and the indications relating to the state of the treatment system according to one embodiment of the invention. Figure 4 is an effluent treatment system that has only one water level detector which is located in the purification device.

The illumination of the green indicator 92 corresponds to a normal level of sludge in the septic tank. The lighting of the red indicator 93 corresponds to a too high level of sludge in the septic tank, necessitating the emptying of the septic tank. The illumination of the green indicator 94 corresponds to a normal level of water 20 in the purification device corresponding to a compliant state of the filter of this purification device. The illumination of the red indicator 95 corresponds to a level of water that is too high in the purification device corresponding to a degraded state of the filter of this purification device, which filter must therefore be rehabilitated or replaced.

The illumination of the green LED 96 corresponds to a sufficient level of charge of the power supply battery of the alarm box to ensure correct operation of this alarm box. The illumination of the red indicator 97 corresponds to an insufficient level of charge of the power supply battery of the alarm box to guarantee proper operation of this alarm box, which alarm box may no longer function and no longer be able to display or transmit threshold information from one of the detectors, sludge level detector or water level detector. The illumination of the green LED 98 corresponds to a tele-transmission in progress between the alarm box and a remote receiver. When this LED 98 5 is off, no teletransmission is in progress. FIG. 5 diagrammatically represents an example of the steps of a detection method in an effluent treatment system according to one embodiment of the invention. The effluent treatment system detection method comprises several steps.

First, carried out in parallel with each other, a sludge level detection stage 61 in a settling tank receiving raw effluents, and a water level detection stage 62 representative of a malfunction of a purification device located downstream of the settling tank.

Then, in the event of an effective threshold crossing (s), an alarm display step 63 indicating, on the one hand, a threshold overflow during the detection of the sludge level, if applicable. and, on the other hand, exceeding the threshold when the water level is detected, if applicable. Then, a step 64 teletransmission of the alert, in case of exceeding the effective threshold (s), to a computer and / or preferably to a mobile phone. Finally, in the event of receiving such an alert, a step 65 of display on the display device of the alert receiver, for example on the screen of a computer and / or preferably a telephone 25 portable. Of course, the present invention is not limited to the examples and to the embodiment described and shown, but it is capable of numerous variants accessible to those skilled in the art. 30

Claims (21)

REVENDICATIONS1. Effluent treatment system, comprising: - a settling tank (1) receiving the raw effluents, - a sludge level detector (4) in the settling tank (1), - a purification device (2) located in a downstream of the settling tank (1), characterized in that the treatment system also comprises: - a water level detector (5, 6) arranged to detect a water level overflow which is representative of a malfunctioning of the purification device (2), - an alarm box (8) indicating, on the one hand, a threshold overshoot by the sludge level detector (4) and, on the other hand, a threshold overflow by the water level detector (5, 6). 2. Effluent treatment system according to claim 1, characterized in that the alert box (8) is adapted to display the indications of exceeding the threshold. 3. Effluent treatment system according to claim 2, characterized in that the alert box (8) is adapted to display the indications of exceeding the threshold, in the form, for each threshold, a light indicator on (93, 95, 97) for exceeding the threshold and another indicator light (92, 94, 96) for not exceeding the threshold. 4. Effluent treatment system according to any one of claims 1 to 3, characterized in that the settling tank (1) is a septic tank, and the purification device (2) is a filter. 3025194 21 5. effluent treatment system according to any one of claims 1 to 3, characterized in that the settling tank (1) is a primary clarifier, and the purification device (2) is a system producing in the effluents decanted, bacterial aggregates 5 absorbing at least a portion of the pollution of these effluents decanted. An effluent treatment system according to any one of the preceding claims, characterized in that: - in the event of malfunction of the purification device (2) not caused by excessive sludge level (11), the detectors (4) , 5) are arranged in such a way that the threshold of the water level sensor (5) is exceeded before the threshold of the sludge level detector (4) is exceeded, and in case of malfunction of the purification device (2) caused by an excessive level of sludge (11) having caused the sludge (10) to overflow into the purification device (2), the detectors (4, 5) are arranged in such a way that the exceeding of the threshold of the water level detector (5) occurs after the threshold of the sludge level sensor (4) has been exceeded. 20 Effluent treatment system according to one of the preceding claims, characterized in that the sludge level detector (4) is structured in such a way that the threshold level is exceeded by the sludge level detector (4). arrives before the sludge (10) arrives at the purification device (2). An effluent treatment system according to claim 7, characterized in that the sludge level detector (4) is arranged such that when the threshold is exceeded by the sludge level detector (4) the settling tank (1) can further accumulate a sludge supplement of 5%, preferably 10%, even more preferably 20%, of the already accumulated sludge volume, before the sludge (10) arrive at the level of the purification device (2). An effluent treatment system according to claim 7 or 8, characterized in that the sludge level detector (4) is arranged lower in the settling tank (1) than the outlet (12) of the sludge tank (4). decantation (1) for decanted effluents. An effluent treatment system according to any one of the preceding claims, characterized in that the water level detector (5, 6) comprises a movable float (53, 54) whose displacement closes an electrical circuit ( 56) when the threshold of the water level (51, 52) is exceeded, said overflow corresponding to a variation, in height (H), of the water level (51, 52), preferably less than 10 cm, more than preferably less than 4cm, more preferably less than 2cm. An effluent treatment system according to any one of the preceding claims, characterized in that the water level detector (5, 6) is placed above the water inlet level (22) in the purification device (2). 12. Effluent treatment system according to any one of the preceding claims, characterized in that the alert box (8) 25 is adapted to send, by wireless link, the indications of exceeding the threshold, to a remote receiver (81, 82) on the one hand with respect to the settling tank (1) and the purification device (2) and on the other hand with respect to the warning box (8), the receiver (81, 82) comprising a man-machine interface able to warn a user of these indications 30 threshold exceeding. 3025194 23 13. Effluent treatment system according to claim 12, characterized in that the receiver (81, 82) is a portable telecommunication equipment (82). 5 14. Effluent treatment system according to any one of the preceding claims, characterized in that the alert box (8) stores information that is sent periodically by the detectors (4, 5, 6) and which are related to the state of the detectors (4, 5, 6). 10 15. Effluent treatment system according to claim 14, characterized in that the alert box (8), on the one hand if no threshold is exceeded, sends to a remote receiver (81, 82) the information stored either periodically and at the request of the remote receiver (81, 82) or only at the request of the remote receiver (81, 82), and secondly when exceeding at least one threshold, always sends an alert to the remote receiver (81, 82). An effluent treatment system according to any one of the preceding claims, characterized in that: - the water level detector (5, 6) is the main level water level detector (5) located at of the purification device (2), - and in that the system comprises an adjoining water level detector (6) located downstream of the purification device (2), - the adjoining water level detector (6) being located lower in height than the main water level detector (5). 17. Effluent treatment system according to any one of the preceding claims, characterized in that the system is a system for treating the effluents of a building whose sanitation 30 is non-collective, preferably a dwelling. 3025194 24 18. Alarm box for an effluent treatment system which comprises a sludge level detector (4) in a settling tank (1) receiving raw effluents and a water level detector (5, 6) disposed in order to detect a water level overflow which is representative of a malfunction of the purification device (2) located downstream of the settling tank (1), indicating on the one hand a threshold crossing by the detector sludge level (4) and on the other hand a threshold crossing by the water level detector (5, 6). 10 19. Effluent treatment system detection system, comprising: - a sludge level detector (4) in a settling tank (1) receiving raw effluents, - a water level detector (5, 6) arranged to detect a water level overflow which is indicative of a malfunction of the purification device (2) located downstream of the settling tank (1), - an alert box (8) indicating on the one hand a threshold exceeding by the sludge level detector (4) and on the other hand a threshold exceeding by the water level detector (5, 6). 20. A method for detecting an effluent treatment system, comprising: - a detection (61) of sludge level (11) in a settling tank (1) receiving raw effluents, - a detection (62) of the effluent treatment system. water (21) representative of a malfunction of a purification device (2) located downstream of the settling tank (1), - an alert display (63) indicating, on the one hand, an exceeding of the threshold during the detection of sludge level (11) and, on the other hand, a threshold overflow during the water level detection (12). 3025194 25 21. Effluent treatment system, comprising: - a settling tank (1) receiving the raw effluents, - a sludge level detector (4) in the settling tank (1), - a purification device (2). ) located downstream of the settling tank (1), characterized in that the treatment system also comprises a water level detector (5, 6) arranged to detect a water level overflow (21). which is representative of a malfunction of the purification device (2).