The present application is relate to a method and system for treating high salinity water, comprising the following steps: step 1, by a first membrane concentration unit, concentrating the raw water; step 2, with the assistance of a crystallization initiation unit, mixing the raw water concentrated, initiating crystallization by a seed crystal, and, discharging precipitated crystals; step 3, with the assistance of a crystallization termination unit, firstly, introducing the resulting water of the crystallization initiation unit, then, terminating crystallization, secondly, discharging precipitated miscellaneous salts; step 4, with the assistance of a mechanical filter unit, the liquid to discharged from the crystallization termination unit flowing through the mechanical filter unit, removing the residual seed crystal and floccules; step 6, with the assistance of a second membrane concentration unit, the concentrated salinity water entering the second membrane concentration unit for concentration.

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 method for the treatment of water using reverse osmosis (RO) membranes and nano-filtration membranes wherein the permeate of the membranes is fluid connected to a feed water source via a pressurized storage buffer tank as well as to the fluid connection to use, the method comprising the steps of supplying treated water through a sanitary fully pressurized buffer tank, and supplying waste water through a recirc loop which contains recirculated concentrate and storing treated water in the buffer tank with low total dissolved solids of less than 10% of feed water, low pH of less than pH 7, and of low total organic carbon of less than 25% of feed water ensuring sanitary storage. It further includes opening a waste valve in the recirc loop which purges recirculated concentrate in order to rapidly reduce the conductivity of the water in the recirc loop. It further includes the steps of operating the waste valve such that it maintains the conductivity of the recirculated waste water in the recirc loop within a pre selected range of values and opening the waste valve when a measured conductivity setpoint is exceeded, and closing the waste valve when a measured conductivity setpoint is met.

A method for the treatment of water using reverse osmosis (RO) membranes and nano-filtration membranes wherein the permeate of the membranes is fluid connected to a feed water source via a pressurized storage buffer tank as well as to the fluid connection to use, the method comprising the steps of supplying treated water through a sanitary fully pressurized buffer tank, and supplying waste water through a recirc loop which contains recirculated concentrate and storing treated water in the buffer tank with low total dissolved solids of less than 10% of feed water, low pH of less than pH 7, and of low total organic carbon of less than 25% of feed water ensuring sanitary storage. It further includes opening a waste valve in the recirc loop which purges recirculated concentrate in order to rapidly reduce the conductivity of the water in the recirc loop. It further includes the steps of operating the waste valve such that it maintains the conductivity of the recirculated waste water in the recirc loop within a pre selected range of values and opening the waste valve when a measured conductivity setpoint is exceeded, and closing the waste valve when a measured conductivity setpoint is met.

In situ cleaning systems and methods of use are disclosed and provide cleaning use solutions with minimal chemical additives providing environmentally-friendly cleaning compositions. The in situ cleaning system provides one or more in situ cleaning components, including water treatment components, oxidizing agent generating component and/or alkalinity generating component, providing a cleaning use solution to a washing system.

In situ cleaning systems and methods of use are disclosed and provide cleaning use solutions with minimal chemical additives providing environmentally-friendly cleaning compositions. The in situ cleaning system provides one or more in situ cleaning components, including water treatment components, oxidizing agent generating component and/or alkalinity generating component, providing a cleaning use solution to a washing system.

A water treatment system, particularly pre-filtration unit of the water treatment system, comprising at least one chlorine sensor device, includes a salt-water treatment device which is connected to the chlorine sensor device, an electrolysis cell being disposed in the associated line, and thereafter a pump and a release valve.

Provided is a water softening system not requiring electrical or electronic actuation in which an ion regeneration process of a resin bed contained in a water treatment tank is hydraulically actuated by a sensing device held at a top of the water treatment tank with a body of the sensing device being partially embedded in the resin bed to detect ion depletion of the resin bed.

Provided is a water softening system not requiring electrical or electronic actuation in which an ion regeneration process of a resin bed contained in a water treatment tank is hydraulically actuated by a sensing device held at a top of the water treatment tank with a body of the sensing device being partially embedded in the resin bed to detect ion depletion of the resin bed.