some body know about dionize water?

Question

1.what the function of di water
2.how to spesific piping for di water
3.how di water system works

Answer 1

*Uses:
DI water is necessary in clinical and medical laboratories, where its addition to various reagents and solvents enable accurate measurements, often on automated machines which use very little specimen (i.e. plasma, serum, etc.)

DI water is also used extensively in the semiconductor industry to process and clean silicon wafers and sometimes in the optics industry when very highly clean optical surfaces are required for coating. DI water is also often used as a final rinse when washing scientific glassware.

Deionized water is very often used as an "ingredient" in many cosmetics and pharmaceuticals where it is sometimes referred to as "aqua" on product ingredient labels. This use again owes to its lack of potential for causing undesired chemical reactions due to impurities.

It can also be used in PC watercooling systems. The lack of impurity in the water means that the system stays clean and prevents a build up of bacteria and algae. This enables the machine to work at optimal efficiency even after extensive periods of time without water exchange.

*C.I. PIPES or cast steel pipes are not recommended for de-ionised water as it may damaged the membrens.Even pumps used in this service is also not of CI/CS MOC.
S.S. IS best suitable.Allthough U-PVC/PP/HDPE pipes are extensively used for this purpose.

*Process utilizing specially-manufactured ion exchange resins which remove ionized salts from water can theoretically remove 100% of salts. Deionization typically does not remove organics, virus or bacteria, except through "accidental" trapping in the resin and specially made strong base anion resins which will remove gram-negative bacteria.
*PL. go through http://www.aquariumpros.ca/forums/archive/index.php/f-49.html
*All water supplies contain dissolved impurities. Many manufacturing and other critical applications require highly purified water.

The Demineralisation process utilises acid regenerated strong acid cation resin and caustic regenerated strong base anion resin to remove mineral from the feed water. Doshion offers package D. M. System in dual column with or without Degassification system and also small trolley mounted units for small industrial as well as laboratory applications.
The company offers standard package units for small flow rate and turnkey custom built plants for larger flow rate with various regeneration techniques such as co-current, counter current, packed bed, thorough fare etc. to achieve optimum performance.

MIXED BED:
Mixed Bed Deionisers are used to meet the stringent water quality specifications. The Mixed Bed unit contains both cation and anion resin thoroughly mixed in one vessel. When D. M. water passes through the bed of mixed Resins, it contacts cation and anion resin and the water is purified over and over again resulting in highest purity water with extremely low silica water required for process, High pressure Boiler Feed, Turbine feed, Pharmaceutical and semi-conductor applications.

Answer 2

Take it from a real Clinical Laboratory Scientist, I gotta deal with DiH2o all the time =)

The function is that becaus DiH2o is "cleaner" and when glassware is cleaned it needs to be free from salts in distilled water or else patient results get all screwy

Specific piping was all in the back, lots of piping.

How the system works
in simple terms: the water is passed through a bed of mixd cations and anion exchang resins

website:
The deionization process removes ions from water via ion exchange. Positively charged ions (cations) and negatively charged ions (anions) are exchanged for hydrogen (H+) and hydroxyl (OH-) ions, respectively, due to the resin's greater affinity for other ions. The ion exchange process occurs on the binding sites of the resin beads.

Answer 3

All the above answers are good: I'll add this, though:

Deionized water is sometimes specified by its resistivity. You'll hear of "1 MegOhm" water, or "10 MegOhm" water, etc., which is the resistance per unit length.

Deionized water is actually slightly corrosive, believe it or not. Because of the lack of dissolved minerals in the water, it is easier for materials on the walls of pipes (even glass and stainless steel) to move into solution.

.

Answer 4

Do you mean deionized water? This is water that has been filtered and distilled in such a way to remove all ions. Ordinary distilled water can contain sodium or silica salts that have leached from the glass condensers used in distillation. Deionized water is necessary for preparing samples for very sensitive microanalytical techniques.

I can only suggest looking up "Milli-Q". That's a brandname/ company that sells equipment for producing deionized water.