A method for treating produced water in a system for treating wastewater is disclosed. The system includes a reverse osmosis unit for removing dissolved solids. The reverse osmosis unit produces a permeate and concentrate. To reduce the fouling potential of the membranes associated with the reverse osmosis unit and/or to increase membrane lifetime and/or to increase system recovery, at least a portion of the concentrate is recycled and mixed with the wastewater stream at a point upstream of the reverse osmosis unit.

A method for treating produced water in a system for treating wastewater is disclosed. The system includes a reverse osmosis unit for removing dissolved solids. The reverse osmosis unit produces a permeate and concentrate. To reduce the fouling potential of the membranes associated with the reverse osmosis unit and/or to increase membrane lifetime and/or to increase system recovery, at least a portion of the concentrate is recycled and mixed with the wastewater stream at a point upstream of the reverse osmosis unit.

An automated descaling system can be integrated into a tankless water heater or can be a separate system that is attached to a tankless water heater. The automatic descaling system comprises a cleaning media chamber and a four way valve with a motor. The descaling system can be set on an automatic cleaning schedule.

An automated descaling system can be integrated into a tankless water heater or can be a separate system that is attached to a tankless water heater. The automatic descaling system comprises a cleaning media chamber and a four way valve with a motor. The descaling system can be set on an automatic cleaning schedule.

A scale-free boiler of the present disclosure includes a boiler case, a main flow path disposed inside the boiler case and in communication with a heating flow path disposed outside the boiler case to provide heating, a heat source for heating water flowing along the main flow path, and a filter for removing, based on an electrical force, an ionic material contained in the water flowing along the main flow path or water to be supplied to the main flow path to prevent occurrence of scale.

A scale-free boiler of the present disclosure includes a boiler case, a main flow path disposed inside the boiler case and in communication with a heating flow path disposed outside the boiler case to provide heating, a heat source for heating water flowing along the main flow path, and a filter for removing, based on an electrical force, an ionic material contained in the water flowing along the main flow path or water to be supplied to the main flow path to prevent occurrence of scale.

A water savings system and method for reducing the amount of water needed for adiabatic cooling including the use of a softener and a reverse osmosis device, in which tap water, softened if necessary, is delivered to a reverse osmosis device and softened water alone, reverse osmosis reject water, or softened water combined with reverse osmosis reject water is delivered to spray nozzles for cooling, and reverse osmosis pure water is stored and used periodically to flush the coils to inhibit and/or prevent corrosion from dissolved salts and other solids in the spray water.

A system for descaling apparatus is described. The system provides for: a water inlet feedstream; a reverse osmosis system in fluid communication with the water inlet feedstream, in which the reverse osmosis system produces a water permeate output feedstream; and a pressurised carbon dioxide feedstream. The pressurised carbon dioxide feedstream and water permeate output feedstream are arranged in use to combine to produce a pressurised carbonic acid input feedstream.

A system for descaling apparatus is described. The system provides for: a water inlet feedstream; a reverse osmosis system in fluid communication with the water inlet feedstream, in which the reverse osmosis system produces a water permeate output feedstream; and a pressurised carbon dioxide feedstream. The pressurised carbon dioxide feedstream and water permeate output feedstream are arranged in use to combine to produce a pressurised carbonic acid input feedstream.

A filter cartridge for a whole house water filter includes a cylindrical, or tubular, filter media coupled to a mixer tank with improved high flow mixing features. The mixer tank includes a bowl in which a flow diverter, a flow guide with angled fins and a filter media are provided. The flow diverter has a concave portion, i.e., a mushroom-shaped portion, the interior of which is in fluid connection with a central passage through which filtered water flows. In operation, the filtered water flows through the central passage and is deflected by the concave interior of the flow diverter down through the angled fins of the flow guide. The filtered water then passes out through an outlet. The mixer tank stirs the filter media and water mix to increase the kinetics of the mixing process.