Methods and systems are described for providing improved food processing systems by treating wash water in a wash stage of the food processing system with a biocide. Sufficient biocide may be added to significantly reduce the levels of bacteria in the wash stage, which can prevent problems associated with bacteria in downstream processes.

Disclosed is a combined generator technology for two purposes: 1) electrodialysis “salt splitting” (ESS) to convert sodium chloride salt into an acid (hydrochloric or sulfuric) and a caustic (sodium hydroxide) to be generated for use as regeneration solutions for weak acid cation, weak base anion, and strong base anion resin systems and 2) electro-generation for converting sodium chloride salt into an aqueous solution of sodium hypochlorite both with the intention of treating make up water and/or recirculating in a cooling tower, fluid cooler, or any evaporative cooling device; other salts will apply to the process in addition to sodium chloride (example sodium sulfate).

A diluted chemical liquid production apparatus has a structure that has a platinum group metal carrying resin column, a membrane-type deaeration apparatus and a gas dissolving membrane apparatus, which are sequentially provided in a supply line of ultrapure water; and has a pH adjuster injection device and an oxidation-reduction potential adjuster injection device, which are provided between the platinum group metal carrying resin column and the membrane-type deaeration apparatus. An inert gas source is connected to a gaseous phase side of the membrane-type deaeration apparatus, and an inert gas source is also connected to the gaseous phase side of the gas dissolving membrane apparatus; and a discharge line communicates with the gas dissolving membrane apparatus. A pH meter and an ORP meter are provided in the discharge line. Such a diluted chemical liquid production apparatus can control a pH and an oxidation-reduction potential.

A method, system, and computer readable storage medium for determining an optimal amount of coagulant to be added to water for coagulation treatment. The method includes predicting a water quality index that would be achieved for a corresponding nominal coagulant dose by evaluating at least one coagulation-related incoming water parameter of water that has not been treated with coagulant, with a first mathematical model constructed from historical data including (i) previously administered coagulant dosages; and (ii) previously determined values of the water quality index of the water. The method also includes determining whether the predicted water quality index is within a target range. If the predicted quality index is not within the target range, then the coagulant dosage can be adjusted, and the adjusted dosage can be evaluated to predict the water quality index that would be achieved if the adjusted coagulant dosage is administered to the water.

An efficient and low-cost process for gravity thickening and fermentation of waste activated sludge withdrawn from the surface of an activated sludge aeration basin for use with treatment systems designed for “enhanced biological phosphorus removal” (EBPR). One or more reactor tanks are used for the process with the steps of: A fill cycle, in which the waste mixed liquor flows into the tank, followed by a settle cycle, in which the mixed liquor is allowed to settle for a period of time, followed by a decant cycle, in which the clear liquid is withdrawn. The withdrawal of a volume of the settling mixed liquor for discharge is then followed by a ferment period for the remaining settled mixed liquor solids and a transfer of the fermented mixed liquor solids back to the activated sludge liquid stream process.

Techniques and systems for neutralizing discharge waters from ballast and/or cooling water biocidal treatment and disinfection systems are provided. The systems utilize oxidation reduction potential control to regulate the dechlorination of a biocidal agent to allowable discharge levels in ship buoyancy systems and ship cooling water systems.

A cleaning water supply device includes an ultrapure water line through which ultrapure water flows by a fixed amount, a production unit that produces cleaning water by adding a solute to the ultrapure water line by a fixed amount, a cleaning water line for causing the cleaning water to flow, cleaning machines to which the cleaning water is supplied from the cleaning water line, a solute removal unit into which excess cleaning water is introduced from the cleaning water line, and a collecting line for returning collected water from which the solute is removed to a tank and the like.

The invention relates to a method and system for the continuous treatment of the water of an aquatic facility using an integrated process control system to control a mixed halogen-based treatment comprising chlorine dioxide and a free halogen. The integrated process control system provides versatile control the chlorine dioxide and/or free halogen while employing in-situ generation of chlorine dioxide.

A system and method for controlling the accelerated remediation of aquatic facilities using at least one sanitizer sensor, a pH sensor, a temperature sensor and a chlorine dioxide sensor all interfaced with a programmable controller that is programmed to implement a remediation cycle and configured to calculate a Ct value, the sensors being in fluid contact with water of the aquatic facility, and the programmable controller is interfaced with a chemical feed system for supplying chlorine dioxide to the water.

A transportable system for generating aqueous ozone solution includes a hand truck carrying one or more auxiliary compartments containing respective mixing assemblies that are fluidically coupled to an ozone supply unit. At least one mixing assembly includes a first flow path for water to flow through and a second flow path in parallel with the first flow path. The first flow path includes one or more ozone intake ports that are fluidically coupled to one or more ozone output ports of the ozone supply unit. The second flow path includes a control valve that selectively permits a portion of the water to flow through the second flow path to produce a negative pressure in the first flow path so that ozone is drawn into the first flow path and mixed into the water flowing through the first flow path to produce an aqueous ozone solution.