An embodiment provides a method for real-time management of device maintenance utilizing quality metrics defined based upon inputs of the device, the method including: receiving inputs corresponding to a particular device, wherein the particular device provides measurements of a parameter of a fluid; generating, from the inputs, quality metrics for and unique to the particular device; monitoring the particular device while the particular device is deployed, wherein the monitoring occurs in view of the quality metrics; and triggering, responsive to detecting information corresponding to the particular device is violating at least one of the quality metrics, a notification to a user to perform an action corresponding to the particular device.

A portable, multi-step apparatus and method for producing potable water in remote locations.

A base member for a water treatment chemical dispensing container comprises a centrally located raised portion having a top and sides that depend from the top. It further comprises a base portion surrounding the raised portion and relative to which the raised portion is raised such that the sides of the raised portion extend at least between the base portion and the top of the raised portion. A peripheral wall bordering and thus extending around the base portion, with a channel thus being defined around the raised portion between sides of the raised portion and the peripheral wall, is also provided. The top of the raised portion comprises a hollow, operatively upwardly open receptacle. Furthermore, one or more apertures are provided in the sides of the raised portion, adjacent to the top.

A method of maintaining a safe free chlorine level in a body of water for recreational use where the free chlorine level at a harmful level comprises determining if the free chlorine level in the body of water is above a safe level and adding sufficient DMH to the body of water to bring the free chlorine down to a safe level.

A controller receives sensor data from a sensor of a water system in response to operation of the water system in an automation phase. The sensor generates data indicative of oxidant level of the water system. The controller determines observed water chemistry behavior based on the sensor data and compares the observed water chemistry behavior to learned water chemistry behavior. The water chemistry behavior may include a rate of increase or decrease. The controller performs an automation action in response to the comparison. The automation action may include modifying addition of oxidizing chemistry to the water system, generating an alarm, or sending an alert. The controller may receive sensor data in response to operation of the water system in a learning phase and determine the learned water chemistry behavior based on the sensor data received during the learning phase.

An embodiment provides a method for real-time management of device maintenance utilizing quality metrics defined based upon inputs of the device, the method including: receiving inputs corresponding to a particular device, wherein the particular device provides measurements of a parameter of a fluid; generating, from the inputs, quality metrics for and unique to the particular device; monitoring the particular device while the particular device is deployed, wherein the monitoring occurs in view of the quality metrics; and triggering, responsive to detecting information corresponding to the particular device is violating at least one of the quality metrics, a notification to a user to perform an action corresponding to the particular device.

Selected freshwater or saltwater aquaculture systems are processed for the automatic removal of waste, ammonia, and pathogens while controlling temperature, oxygen, and feed amounts for obtaining maximum growth and survival at maximum aquatic species densities. A core platform treatment technology removes ammonia by combining chlorine with the ammonia to form chloramines, which are removed by catalytic activated carbon at a downstream filter station. Processing also removes potential pathogens by sterilizing and electrifying the water. The technology utilizes ammonia, chlorine, oxidation-reduction potential (ORP), and flow sensors to electronically adjust the amount of chlorine needed to remove the existing ammonia. A control system utilizes temperature, dissolved oxygen, and image processing sensors to optimize heating, cooling, feeding, and aeration.

A stable aqueous composition of sodium chlorite and a hydrated borate donor having a pH of greater than 9.0 and the weight percent ratio of sodium chlorite (reported as NaClO.sub.2) to hydrated borate donor (reported as the sum of H.sub.2O+B.sub.2O.sub.3) is less than 1.5:1 respectfully. A method of remediating an aqueous system using the stable aqueous composition.

The present invention discloses a plasma denitrification device, which comprises a plasma generating device and a denitrification reservoir. The plasma generating device comprises a plasma generator and a pulsed power supply. The plasma generator comprises at least one set of an electrode to generate plasma. An inlet of the plasma generator is configured to allow sewage passage. The denitrification reservoir comprises a shell and a denitrification zone, a water purification zone, and a sludge collecting zone provided inside the shell. The present invention effectively reduces total nitrogen and ammonia nitrogen in the polluted water body and helps to reduce COD, BOD, total phosphorus and chroma of the water body. The dissolved oxygen level of the water body is also increased after the purification process.

Biocide can be controllably added to a feed stream for a membrane. The membrane can separate the feed stream into a purified permeate stream and a concentrate stream containing contaminants from the feed stream. In some examples, a charge neutral biocide is introduced into the feed stream at a first addition rate. The concentration of the charge neutral biocide in the permeate stream is measured to provide a measured concentration of the charge neutral biocide in the permeate stream. The addition rate of the charge neutral biocide can be adjusted based on the measured concentration of the charge neutral biocide in the permeate stream to introduce charge neutral biocide into the feed stream at a second addition rate different than the first addition rate.