AWT’s method of realizing ultimate safety and impurity removal (production of safe, pure water) by utilizing reverse osmosis membranes will have its true value proven not only for solid materials or particulates, but also when it comes to the field of ions, which goes beyond the colloid molecule level.



Harmfull substances to human health and countermeasures
     
Substance Criteria Dangers to the human body Countermeasures
Escherichia coli bacterium Not to be detected Bacteria can cause orally-transmitting digestive system disease Boiling sterilization, chlorine sterilization
Arsenicum 0.01mg
/l or below		 Atrophy of hair or nails, cirrhosis, perceptual disorder Treatment by desalination equipment, not using the water for drinking water, researching the cause and changing the source of water supply
Hexavalent chrome 0.05mg
/l or below		 Severe vomiting and diarrhea, kidney problem
Nitrate-nitrogen or
nitrite-nitrogen		 10mg
/l or below		 When infants (6 months old or younger) drink brine, the infant can develop methemoglobin thrombus or respiratory disturbances Treatment by desalination equipments, changing source of water supply, and using the water for purposes other than drinking water
Manganese 0.05mg
/l or below		 Symptoms of poisoning, mainly neurological symptoms (speech disorder) Water is colored and dishes become stained. (Problem caused by manganese-containing water) Installing manganese removal equipments, changing source of water supply
Chloride 200mg
/l or below		 Although the criteria are set to begin when people taste saltiness, the total amount taken including those taken from food is important rather than the density of the substance contained in water. Use raw water desalination plants for when the chloride is 2000 ppm or below. Use seawater desalination plant for when the chloride is 2000 ppm or higher
Calcium/magnesium
(total hardnesses) 		300mg
/l or below		 When highly-concentrated, a person may develop gastrointestinal problems. When using extremely hard water it is difficult to create bubbles from soap, and has many other impacts upon our daily lives. Not suitable for use as boiler water. Water of adequate hardness (10 – 100 mg/l) can be tasty when used for drinking water. Treatment by water softening plant or desalination plant
pH value
(hydrogen-ion concentration)		 5.8～8.6 This figure shows whether the water is neutral, alkaline, or acid. It is ideal to have a pH value for drinking water around neutral (pH value 7). Acidic water will make water supply facilities corrode.  
     

Strong in removing Escherichia coli
O157 and giardia bacteria

Producing high-quality drinking water by removing salinity from raw water is the basic capability. Our equipment removes nearly 100% of the destructive bacteria that would not get eliminated even when disinfected by chlorine such as cryptosporidium bacteria and giardia bacteria, and therefore can be deemed as a highly reliable safety plan.

Removing toxic substances
such as fluorine and arsenic

Reverse osmosis membrane desalination systems are mostly strong in removing toxic substances such as fluorine and arsenic. 90% or more, up to 99% of such heavy metals can be removed from the water.






Reverse osmosis membrane systems can remove the items listed below
All the ion substances listed below existent in the water will be removed,
and the treated water will become pure and high quality water
           
No Item Removal rate (%) No Item Removal rate (%) No Item Removal rate (%)
1 Chloride 99.6 14 Mercury 94-97 27 Sulfide 96-98
2 Sodium 99.6 15 Radioactive matter 93-97 28 Isopropanol 85-90
3 Calcium 99.8 16 Ammonium 80-90 29 Acidum lacticum 94-99
4 Magnesium 99.8 17 Bromide 90-95 30 Glucose 96-98
5 Potassium 99.4 18 Phosphate 96-97 31 Sucrose 97-99
6 Manganese 99.8 19 Cyanide 85-95 32 BOD 95-96
7 Iron 99.8 20 Silicate 96-98 33 COD 92-94
8 Aluminum 96-98 21 Silicic anhydride 80-90 34 Trichloroethylene 83-97
9 Copper 96-98 22 Nitrate salt 90-95 35 Arsenic 93-98
10 Nickel 96-98 23 Boron 70-80 36 Nitrate-nitrogen 96-98
11 Cadmium 93-97 24 Fluoride 99.6 37 Nitrite-nitrogen 70-90
12 Silver 93-96 25 Chromate 85-95 38 Pesticide chemical 91-99
13 Zinc 96-98 26 Lead 95-98