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USING OZONATION METHOD FOR TREATMENT OF MINERAL WATER

AUTHOR/S: H. ZHYAN, S. K. AHMADZADE, B. KHAZRY
Sunday 1 August 2010 by Libadmin2010

10th International Multidisciplinary Scientific GeoConference - SGEM2010, www.sgem.org, SGEM2010 Conference Proceedings/ ISBN 10: 954-91818-1-2, June 20-26, 2010, Vol. 2, 841-850 pp

ABSTRACT

Mineral water and drinking water are two vital and immediate needs for human beings.
The origin of 80% of human diseases are unavailability of healthy water.75 percent of
people in developing countries are deprived of facilities for water. Actually , healthy
water is scarce and expensive. Pollutions descend the quality of water by changing it
physically, chemically and biologically. Some of the pollutions are decadence and can
be degraded easily, like human, animal and agricultural drainages. Some of the
pollutions are not decadence , like plumb and mercury, and plastics. Thus their
concentration in water should be reduced. In this reseach, two samples of mineral water
found in northern Mahabad, west Azarbaigan, in Iran with hardnesses of 36 , 42
mg/l(CaCO3) were investigated. Then, different amount of ozone gas is injected into
mineral water and biological and chemical changes are observed. The used ozonator can
produce 25 mg ozone per hour. To determine the amount of ozone gas, we used
iodometry method. By injection of 1.25 mg/l we achieved complete removal of
diatomaceae in sample (1) and up to 99 percent in sample (2). Both complete removal of
chlorophyceae in 1.1 mg/l complete removal of BOD5 sample 1 in 1.1 mg/l ozone and
in sample (2 in 1 mg/l ozone complete removal).We had 65 percent reduction of COD
by injection of 1.2 mg Ozone for sample (1) and 68 percent for sample (2).Complete
disinfection is done in both samples by injection of 0.5 mg per liter. In this method
clean water is achieved because no chemical is used and chemicals are not required. So,
ozonation can be introducd one of the best methods for treatment of water.

Keyword: Ozonation, Treatment , Disinfection, Mineral water, Clean water.