System (100) and method of automatically controlling an active oxidant concentration (e.g. sodium hypochlorite) for a process of producing monochloramine comprising applying metered amounts of an oxidant solution and an amine solution to a defined area (114). An electrochemical measurement device is provided in association with the oxidant solution and prior to the defined area, N comprising at least first and second electrodes and an output terminal. A predetermined voltage potential is applied across the first and second electrodes, wherein an obtained amperometric measurement corresponds to a real-time concentration of the active oxidant in the oxidant solution. A feedback signal is generated based on the obtained measurement via the output terminal to a controller (108), which automatically regulates, in real-time and based at least in part on the control signal, the metered amount of oxidant solution provided to the defined area.

The present disclosure relates to an automatic control system and method for water treatment of a thermal sterilization kettle. The system comprises a sampling module, a monitoring module and a control module, wherein the sampling module is used for respectively sampling hot water and cold water, and the monitoring module is arranged to respectively monitor online fluorescence signals in the sampled hot water and the sampled cold water; the control module is used for respectively controlling whether to add a compound medicament into a hot water area or not according to the online fluorescence signal of the sampled hot water and controlling whether to add the compound medicament into a cold water area or not according to the online fluorescence signal of the sampled cold water; and meanwhile, the monitoring module is further used for monitoring the residual chlorine signal of the sampled cold water.

A method of sanitising a body of water including the steps of adding sodium chlorite and/or sodium chlorate to the body of water and converting the sodium chlorite and/or sodium chlorate to chlorine dioxide in an electrolysis cell which is in fluid communication with a water circulation system of the body of water, wherein chlorine is also added to the body of water.

A sensor including first and second electrodes can be used to determine the concentration of at least one chemical constituent in a fluid sample under test. The electrodes can be disposed in the fluid sample and a predetermined voltage can be applied to a first electrode. The voltage can cause a current to flow between the first and second electrodes through the sample, the current dependent on the concentration of the chemical constituent in the fluid sample. A sense resistor is coupled to the first electrode such that the current flowing between the electrodes flows through the sense resistor. A processor electrically isolated from the electrodes can receive data signals indicative of the voltage drop across the sense resistor and the voltage applied at the first electrode. The received signals can be used to determine the concentration of the constituent in the fluid sample.

The present application provides a water treatment method, a water treatment device, and a slime inhibitor for membranes that are capable of, in water treatment using a separation membrane and a reverse osmosis membrane in the subsequent stage, inhibiting the generation of a slime both in the separation membrane and in the reverse osmosis membrane by a simple method. The water treatment method includes adding an iodine-based oxidizer to water to be treated, subjecting the water to be treated obtained during the adding of the iodine-based oxidizer to filtration with the separation membrane, and causing filtrated water obtained during the filtration to be separated with the reverse osmosis membrane into permeated water and concentrated water.

A solid waste treatment method includes the steps of: degradation and sterilization via chlorination of the solid waste, stabilization of the solid waste and regeneration of biomass to reduce or eliminate solid waste. The solid waste treatment method may be utilized in agricultural, industrial or municipal settings.

A water monitoring device monitors and maintains swimming pool chemistry. The device includes sensors that detect water chemistry. The water monitoring device can communicate with computers and servers. This system can be used to determine if corrections to the water chemistry are required to maintain water sanitation. The device can monitor: pH, air temperature, water temperature, free chlorine levels, oxidation reduction potential, alkalinity, oxygen demand, water movement and velocity, and electrical conductivity.

The present invention relates to a water treatment method including: a filtration step of feeding water to be treated to a membrane filtration device having loaded therein a porous separation membrane and performing filtration treatment to obtain filtrate; a discharging step of discharging the water to be treated in the membrane filtration device, which has been separated and concentrated by the porous separation membrane; and a cleaning step of cleaning the porous separation membrane by at least one treatment of physical cleaning and chemical cleaning, in which a cycle including a combination of the filtration step, the discharging step and the cleaning step is repeated multiple times, thereby obtaining filtrate. In each cycle, the filtration step and the discharging step are repeated multiple times, and the cleaning step is then carried out.

The present invention provides a remote monitoring system for monitoring the operation of a fluid treatment system and/or the qualities, characteristics, properties, etc., of the fluid being processed or treated by the fluid treatment system. The present invention also relates to carbon nanotube sensors.

The mixing system for ready-to-use flush solutions is characterized by an RO system, a mixing unit that is connected to the RO system and that contains a mixing chamber, to which high-purity water can be fed from the RO system and flush solution concentrate can be fed from a concentrate source, and a flush solution link connector, wherein the RO system and the mixing unit form a filling station, a mobile flush solution container that contains a pressurized container that receives a flush solution bag that can be coupled to the flush solution link connector of the mixing unit, and a computer and control mechanism for all measurement and monitoring tasks during the local production of a flush solution, wherein the mobile flush solution container and the filling station are provided with sensors by means of which wireless communication is made possible between the mobile flush solution container and the filling station.