Reverse Osmosis (RO) Device

Pollute cause

Chemical washing pharmacy and its formula

Same with NO.1

About 100L/set component

1%Formalelin

Bacteria

4

3.Keep normal running

2.Washing and swashing about10 mins

1.Pressure0.4Mpa,2.5T/H circle for 2 hours

About 200L/set component

3.Sodium hydroxide PH12

2.Hydrochloric acid PH2

1.Citric acid PH4

Colloid substance

Organic,

3

Ditto

Ditto

B.Citric acid PH4

A.Hydrochloric acid PH4

Calcium sediment

2

3.Keep normal running

2.Keep1Mpa washing for 30 mins

1.Keep0.4Mpa,1T/H flow rate 2 hours

About 100L/Set component

B.4%  sodium bisulfite

citrate ammonia

A.2%  PH4-5

Metallic oxide

1

Washing mode

Medicament dosage

Cleanout fluid

Pollute cause

Number

4.       Reverse osmosis membrane washing

Electronic industry ultrapure water produce.

Phamaceutical,medicine water supply produce

Soft and salt removal of boiler water supply

Driking water produce

3.       Application:

Working pressure:with the rise of working pressure,desalinatin will increase a little.

Water temperature:when water temperature raising,desalination will increase a little.

Raw water concentration:with the raise of raw water consistency desalination will be decline.

PH value:under acid conditon although the membrane is not easy to block,the desalination will be decline.

Solubility gas:under its dissociation situation easy to permeate,such as CO,SO,O,CI,HS.

Trend of hydrogen bond:as those organic contains strong hydrogen bond,the desalination rate is lower,such as water,ammonia and phenol.etc.

Size of molecule:the desalination rate raised with average diameter of molecule.

Ion degreeraised with the increase of ion degreee,second and third degree ion desalination rate higher than single degree ion.

2.       Main factors affect desalination rate of reverse osmosis membrane:

Reverse osmosis is a kind of semi-permeable membrane working under differential pressure and just the water can through it. Its working principle is hydrogen bond theory and selective adsortioncapillary flow theory.The general reverse osmosis membrane is low-tension composite membrane and ultra-low pressure composite membrane,its structure is screw roll-type membrane. Its advantages as follows:unit volume with large surface area,great steam distribute,compact structure,high desalination rate,good interception.Disadvantages are easy to block,hard to wash. So it is important to do pretreatment and washing.

1.       Working principle and performance overview

Reverse osmosis master detail principle,application and maintain instruction:

Reverse Osmosis (RO) Device