Abstract: The invention concerns a device for measuring the pH of an effluent, said device comprising means for measuring an item of information representative of the pH of said effluent intended to be brought into contact with said effluent. According to the invention, such a device further comprises means for modifying the pH value of said effluent close to said means for measuring.

Abstract: The invention concerns a device for measuring the pH of an effluent, said device comprising means for measuring an item of information representative of the pH of said effluent intended to be brought into contact with said effluent. According to the invention, such a device further comprises means for modifying the pH value of said effluent close to said means for measuring.

Abstract: An amperometric sensor circuit for measuring chlorine concentration in water. The circuit includes first and second working electrodes coated with a hydrophilic membrane. A power supply and biasing circuit is configured to deliver a generally constant voltage between the first working electrode and a reference electrode and to generally deliver a constant current between the second working electrode and a counter electrode. A measurement circuit measures the current between the counter electrode and the first working electrode. A processing circuit is provided for determining the chlorine concentration based on the current measured by the measurement circuit.

Abstract: The invention concerns a device for measuring the pH of an effluent, said device comprising means for measuring an item of information representative of the pH of said effluent intended to be brought into contact with said effluent. According to the invention, such a device further comprises means for modifying the pH value of said effluent close to said means for measuring.

Abstract: An amperometric sensor circuit for measuring chlorine concentration in water. The circuit includes first and second working electrodes coated with a hydrophilic membrane. A power supply and biasing circuit is configured to deliver a generally constant voltage between the first working electrode and a reference electrode and to generally deliver a constant current between the second working electrode and a counter electrode. A measurement circuit measures the current between the counter electrode and the first working electrode. A processing circuit is provided for determining the chlorine concentration based on the current measured by the measurement circuit.

Abstract: A water distribution system comprises a water distribution conduit. Disposed in the conduit is a device for measuring a value of at least one parameter representative of the quality of the water flowing in the conduit. The device comprises means for measuring the parameter and means for directing substantially all of the water through the device in close proximity to the means for measuring the one parameter.

Abstract: The invention relates to a method of qualifying the variability of the composition of an effluent, in which method a series of measurements is effected over time of at least one first and one second parameter of the effluent. The invention is characterized in that, in each time step, first and second derivatives of the parameters are determined, first and second logical domains are defined, probabilities of the first derivatives belonging to the first logical domains are assigned, probabilities of the second derivatives belonging to the second logical domains are assigned, global logical domains are defined, global probabilities of belonging to the global logical domains are assigned, and the variability of the composition of the effluent is qualified on the basis of these global probabilities of belonging to the global logical domains.

Abstract: A method of generating a series of successive marked parcels of water in a water distribution network (12) fed by at least one water source (16) supplying water continuously, the method being characterized in that it includes: a step of measuring at least one first physico-chemical parameter of water from the source; a step of comparing the variation of the first parameter and a predetermined threshold; a step of defining parcels of water (L1, L2, L3, L4) during which each parcel of water is constituted by the volume of water supplied by the source between a first time and a second time later than the first time, the second time being determined automatically so as to correspond to a time at which said at least one measured first parameter is subject to a variation greater than the predetermined threshold; a step of acquiring and storing a natural evolution of the measured first parameter between the first and second times; and a step of natural marking of said parcel of water that consists in associating sai

Abstract: The invention relates to an installation (30) for monitoring the quality of water and designed to be installed on a pipe (18) dedicated to distributing water to a consumer. The invention is characterized in that the installation comprises: a probe (32) for measuring at least one parameter of the water flowing in the pipe; a contamination detector device (46) for detecting the presence, if any, of contamination on the basis of measurements performed by the probe; a reverse flow detector device (36) for detecting reverse flow in said pipe; a disinfection device (40) for disinfecting the water in the pipe and/or a cutoff valve for closing the pipe; and a control member (50) for actuating the disinfection device and/or the cutoff valve as a function of data provided by the contamination detector device and the reverse flow detector device, whereby the quality of the water delivered to or returned by the consumer is monitored.

Abstract: A method of biologically treating water and more particularly, a process for nitrifying and denitrifying water includes employing a continuous aeration mode and a sequential aeration mode. In the continuous aeration mode, nitrification and denitrification reactions occur simultaneously in the water. The continuous aeration mode occurs when the nitrate concentration of the water reaches a predetermined low threshold. The sequential aeration mode occurs when the nitrate concentration reaches a predetermined high threshold. When in the sequential aeration mode, aeration is ceased when the ammoniac concentration reaches a predetermined low threshold and aeration is activated when the ammoniac concentration reaches a predetermined high threshold.

Abstract: The invention essentially relates to a method for controlling the extraction of a biogas from a housing (50) equipped with at least one extraction assembly (31A, 31B) connected to a manifold (70A, 70B) via a control valve (10A, 10B), said method comprising the following steps: providing a respective predetermined manifold pressure (Pr) for each manifold (70A, 70B), and opening the control valve (10A, 10B) in a given position. The method is essentially characterised in that it further comprises the following steps: measuring the value of a meteorological parameter outside the housing; calculating a global set point (dPci) of the control valve (0A, 10B) position based on the measured meteorological parameter value, and opening the control valve (10A, 10B) in a given position in response to the global set point (dPci).

Abstract: The invention relates to a method of qualifying the variability of the composition of an effluent, in which method a series of measurements is effected over time of at least one first and one second parameter of the effluent. The invention is characterized in that, in each time step, first and second derivatives of the parameters are determined, first and second logical domains are defined, probabilities of the first derivatives belonging to the first logical domains are assigned, probabilities of the second derivatives belonging to the second logical domains are assigned, global logical domains are defined, global probabilities of belonging to the global logical domains are assigned, and the variability of the composition of the effluent is qualified on the basis of these global probabilities of belonging to the global logical domains.

Abstract: A water treatment method using a biological reactor to break down the nitrogen-based pollution contained in said water, said reactor comprising a biomass aerated by aeration means, said treatment comprising simultaneous nitrification/denitrification phases, characterized in that said treatment implements two aeration modes: a continuous aeration mode; a sequential aeration mode in which the aeration interruption is triggered when the ammonia concentration reaches a low predetermined threshold while the aeration is activated when the ammonia concentration reaches a high predetermined threshold, the switching from one aeration mode to the other being activated according to the nitrate concentration in said water, said continuous aeration mode being activated when said nitrate concentration reaches a low predetermined threshold, and said sequential aeration mode being activated when said nitrate concentration reaches a high predetermined threshold.

Abstract: A method of treating wastewater wherein the biomass associated with the wastewater is subjected to simultaneous nitrification and denitrification in a single reactor. The method entails directing a wastewater influent stream into the reactor and measuring the concentration of N—NH4 in the influent wastewater stream at a point upstream from the reactor. Air is supplied to the reactor for aerating the biomass in the reactor. The method includes controlling the quantity of air introduced into the reactor based in part at least on the measured concentration of N—NH4.

Abstract: A method of treating wastewater wherein the biomass associated with the wastewater is subjected to simultaneous nitrification and denitrification in a single reactor. The method entails directing a wastewater influent stream into the reactor and measuring the concentration of N—NH4 in the influent wastewater stream at a point upstream from the reactor. Air is supplied to the reactor for aerating the biomass in the reactor. The method includes controlling the quantity of air introduced into the reactor based in part at least on the measured concentration of N—NH4.