I. Pure water (reverse osmosis) equipment summary

Reverse osmosis pure water equipment adopts the most advanced, saving-energy membrane separation technology, the principle of pure water equipment is under the action of pressure higher than solution osmotic pressure, other impurities cannot permeate the semi-permeable membrane, then the water is separated from other matters. The membrane aperture of reverse osmosis membrane is very small, so the reverse osmosis equipment can remove the dissolved salts, colloids, microorganisms, organic substances etc effectively, pure water equipment can produce pure water, high pure water, to meet the requirements of different industries and customers. 

II. The main technology process of reverse osmosis pure water equipment

1.     Raw water tank (optional)
Store raw water

2.     Raw water pump

Constant system water supply pressure, stable water supply quantity

3.     multi-media filter

the main purpose is to remove the mud and sand, iron rust, colloids, suspended matter, as well as the matters are more than 20μm in the raw water. Backwash, direct wash can be done by manual valve control or full-automatic controller. To ensure the product’s quality, prolong the service life of equipment.

4.     Activated carbon filter

The system adopts shell activated carbon filter, activated carbon not only can adsorb electrolytic ions, but also have the ion exchange adsorption. Meanwhile, the equipment has the self-protection system, the operation cost is low.

5.     Ion softening/feeding system

RO device is to dissolve solids, reduce concentrate discharge, take use of fresh water, prevent concentrate end from growing calcium carbonate, magnesium carbonate, magnesium sulfate, calcium sulfate etc, whose concentration is more than the balanced dissolvability, which will have the crystallization, damage the performances of membrane
6. Precision filter

To remove the residual suspended substances, non-straight particles and colloids, make RO system and the following equipments operate safer and more reliable. Membrane element is the 5μm meltblown filter element, the purpose is to remove the impurities left by the last stage filtration, which are 5μm, avoid entering into the RO device, damage the membrane surface, and then destroy the desalinization performance.
7. Reverse osmosis

RO’s desalinization and recovery rate are high, run is stable, covering space is small, operation is simple. RO equipment is desalinizing while removing the majority of bacteria, colloids and the organic substances with macro molecular weight.  

III. Operation parameters and product indexes of reverse osmosis pure water equipment:

Single capacity: 0.25M3/H-120 M3/H (customized)

Desalinization: RO>98%(single-stage or double-stage customized)

Operation pressure:1Mpa-1.5Mpa

Recovery:60%-75%
product conductivity: <10μs/CM(raw water<500μs/CM)

IV．Various technology process for different requirements
Process one: quartz sand+ activated carbon+ softening+ safeguard filter+ reverse osmosis (for smaller quantity of product)

Process two: quartz sand+ activated carbon+ scale inhibiting+ safeguard filter+ reverse osmosis (for larger quantity of product)

Process three: flocculating sedimentation+ quartz sand+ activated carbon+ scale inhibiting+ safeguard filter+ reverse osmosis (for worse raw water quality)

Process four: quartz sand+ activated carbon+ softening+ safeguard filter+ reverse osmosis+ ozone/UV sterilization(for producing pure water and beverage)

Process five: quartz sand+ activated carbon+ softening+ safeguard filter+ first-stage reverse osmosis+ second-stage reverse osmosis+ ozone/UV sterilization (for raw water conductivity >>1000μS/cm)