Two stage reverse osmosis system
For some areas of poor water quality in the double stage reverse
osmosis equipment to improve water quality, water quality of double
stage reverse osmosis equipment for electrical conductivity of more
than 500 mu s/cm, 0.5-0.2M. Cm water resistivity (conductivity 2-5
s/cm).
The first stage of water production in two-stage reverse osmosis
enters the second stage as raw water. And there is a continuous
flow of concentrated water cycle, the use of this process, the two
level of water completely meet the national standard of pure water,
dual system commonly used in medicine, medicine, electronics and
pure water industry.
Two reverse osmosis concentrated water recycling tank first,
because two of the concentrated water quality than raw water, can
reduce the water salinity level before, but also reduces the
production of salt content of water, improve the water quality.
The recovery rate of the first stage reverse osmosis and reverse
osmosis system a maximum of not more than 75%, two level of reverse
osmosis for water level reverse osmosis, only a small amount of
monovalent ions and gases, it can use the high recovery rate (up to
75%-90%).
Technical advantages
(1) under the condition of room temperature, the physical method of
no phase change can be used to purify and purify water;
(2) the treatment of water depends only on the pressure of water as
the driving force;
(3) without the use of a large number of chemicals and acid and
alkali regeneration treatment;
(4) no chemical waste liquid and acid alkali waste liquid
discharge, no waste acid and alkali neutralization process, no
environmental pollution;
(5) easy to operate, stable product water quality.
Two, equipment performance
Multi media filter, ultrafiltration, microfiltration, sterilization
and dosing devices, such as pretreatment system to protect the
reverse osmosis membrane from damage
High rate of desalination, low operating pressure of the United
States low pressure roll composite reverse osmosis membrane, good
water quality, low operating costs, long service life
Configure automatic circulation cleaning system for membrane
cleaning
Advanced membrane protection system, when the device is turned off,
the desalination of water can automatically clean the membrane
surface pollutants, extend the membrane life
Standard program automatic control system to ensure the stability
of the water quality of the system and prolong the service life of
the equipment
High degree of integration, easy to expand, increase the number of
film can increase the processing capacity
Three, water quality requirements
1 turbidity: <1NTU
2 pH range: 4~11
3 free residual chlorine: <0.1mg/L
4 water temperature: 5~45
5 iron: <0.1 mg/L
6 Mn: <0.05mg/L
7 chemical oxygen demand: <1.5mg/L
8 Langelier index: <0.5mg/L
Four, applicable field
Coal mine production of deep water desalination in addition to
hardness treatment, advanced treatment of drinking water
Power plants, chemical plants and large and medium-sized industrial
and mining enterprises boiler supply water
Electronic industry integrated circuit, single crystal silicon,
display tube, electrode foil, etc.
Pharmaceutical, hospital, laboratory with large infusion,
injection, tablets, biochemical products, such as high purity water
Pure water, beverage, beer, liquor, health care products, etc.
Brackish water, seawater desalination
High fluoride drinking water