A water quality monitor system comprising a base having a first end and a second end is disclosed. A cover is removably coupled to the first end of the base such that the cover surrounds and covers the first end of the base. A flow cell jar is connected to the second end of the base. A sensor probe is connected to the second end of the base and extends downward into the flow cell jar. The sensor probe is configured to measure a plurality of water quality parameters. The base includes an inlet and an outlet connected to opposing ends of the base and connected in-line to the plumbing of a pool recirculation system. A controller is configured to provide a connection between the water quality monitor and a cloud-based storage system, using a wireless network. The measured water quality parameters are transmitted to the cloud storage system.

Systems and methods for electrolytic spa sanitation are provided which control electrodes in a manner that extends the use of electrodes, reducing the frequency of replacement of electrodes. The system also incorporates electrodes that can be easily replaced by a user, further reducing the need to maintenance by trained service personnel. Systems and methods use measurements from ORP, pH, and temperature sensors to determine the amount of sanitizer necessary to be produced from the electrodes. The electrodes are capable or acting as either an anode or a cathode.

An illustrative control system for use with a replaceable ozone generator cartridge for use with an aqueous ozone delivery device, for example, for sanitizing objects, including hands, hands and forearms, feet, other tissue, instruments, or other object sanitizing. One embodiment of the control system calculates and transmits usage data to a memory device of the ozone generator cartridge, and also includes various sensors and drivers for controlling an aqueous ozone concentration. The control system also provides other data logging, error detection, and identity verification of the replaceable ozone generator cartridge.

The crude oil sludge treatment agent is mixed with crude oil sludge and water and used for treatment of the crude oil sludge under alkali conditions. The crude oil sludge treatment agent contains green rust. The crude oil sludge treatment agent may further contain either or both a metal and a metal ferrite. The metal and the metal of the metal ferrite are one or more selected from the group consisting of aluminum, yttrium, zinc, copper, tin, chromium and silicon. The crude oil sludge treatment agent may also contain one or more selected from the group consisting of aluminum ferrite, yttrium ferrite and zinc ferrite. The crude oil sludge treatment method includes a mixing step in which crude oil sludge, water and green rust are mixed under alkali conditions.

A method of optimizing a wastewater treatment plant includes: providing an oxidation ditch having a dissolved oxygen set-point and including: an aeration system having an aerobic zone; and an anoxic zone; measuring the oxidation-reduction potential of the anoxic zone; and based on the measured oxidation-reduction potential: increasing or decreasing the dissolved oxygen set-point; increasing or decreasing a dose of supplemental nutrients; and/or increasing a dose of supplemental carbon or metal salts.

Unwanted material in water, such as Legionella and scale, may be treated using a combination of technologies. Components of each technology may be controlled using a databus, such as an Internet-of-things (IoT) databus. An additional advantage of the treatment technologies is an increase in the efficiency of heat transfer components, such as cooling towers, and a related reduction in carbon footprint.

A fluid delivery system illustratively includes a spout, at least one valve in fluid communication with the spout, and a disinfectant device, illustratively an antibacterial device, fluidly coupled to the spout. The faucet is configured to selectively flow water through the disinfectant device in response to a user input to the faucet. In another illustrative embodiment, the fluid delivery system includes an outer housing, a plurality of fluid devices supported by the outer housing, and an ozone generator fluidly coupled to the fluid devices.

A method of treating water in a water treatment system after a replacement of an ion exchange bed includes introducing water to be treated into the ion exchange bed of the water treatment system to produce treated water, calculating a current exchange daily average flow rate of water through the water treatment system, calculating a cumulative daily average flow rate of water through the water treatment system, and determining an estimated number of days remaining to exhaustion of the ion exchange bed based on the current exchange daily average flow rate and the cumulative daily average flow rate.

Disclosed herein are fluid chemistry systems comprising fluid chemistry manifolds. The fluid chemistry manifolds can comprise an inlet, two flow paths in fluid communication with the inlet, one or more probe apertures, and an outlet in fluid communication with the two flow paths. The one or more probe apertures can be configured to receive at least a portion of a corresponding fluid chemistry probe. The probe can be configured to detachably attach to the one or more probe apertures and fluidly communicate with the flow path. The probe can include one or more of a pH sensor, an oxidation reduction potential (ORP) sensor, and a total dissolved solids (TDS) sensor. The systems can also comprise an adjustable valve configured to selectively permit a predetermined amount of fluid flow through the at least one of the two flow paths.

An electrochemical cell including a first chamber having an anode, a second chamber having a cathode, at least one ionic connection between the first chamber and the second chamber, such that liquid electrolyte from the first chamber is prevented from mixing with liquid electrolyte in the second chamber is provided. The first chamber and the second chamber can be arranged in parallel and positioned remotely from each other. An electrochemical system including the electrochemical cell, and first and second sources of saline aqueous solutions is also provided. Water treatment systems are also provided. A method of operating an electrochemical cell including introducing first and second saline aqueous solutions into first and second chambers of the electrochemical cell, and applying a current across the anode and the cathode to generate first and second products, respectively is also provided. A method of facilitating operation of an electrochemical cell is also provided.