Propriety of drinking water in some refinery units in Najaf Governorate

الملخص EN

The physico – chemical properties of water samples from some refinery units in najaf governorate studied during six month are (May, June, July, August, September & October) of 2007 .

The current study included measurements of (pH ,EC ,temperature , Turbidity, Total alkalinity, dissolved oxygen, T.D.S, Total hardness, Chloride in addition to nutrients such as nitrate) in seven stations (Manadira,Heara,Najaf city ,Kufa city ,Qadisiah,Abbassai and Hereia).

The results revealed that the averages of pH values of all stations ranged between (6.5-8.0) and consider within normal value for internationalism limits (U S EPA,1981) as (6.5-8.5) .

mean while values of turbidity were increased in station in which the highest value during August was (57) NTU in Qadisiah and decrease in Manadira station in which the lowers value during May was (2.8) NTU comparing for internationalism limits (WHO,1984) are as (5) NTU .

Total hardness were increased in Abbassai station in which the highest value of hardness during June was 546 mg/l comparing Iraq limits ,1986 as (500) mg/l .In addition the Electrical conductivity values averages of all stations ranged between(1100-1467) µs/cm while the Dissolved oxygen averages of all stations ranged between (3.6-7.8 ) mg/l , the TDS averages of both stations ranged between (535-734) mg/l comparing for internationalism limits (U S EPA,1981) as (500) mg/l.

The highest concentrations of Nitrate in Kufa station were 48 mg/l during August and 0.92 mg/l.

during June in Manadira station comparing for internationalism limits (WHO,1984) as (10) mg/l.

The highest value of Total alkalinity was 385 mg/l in the Heara station during June comparing Iraq limits ,1986 as (200) mg/l and increased the chloride value in Abbassai station during May as 280 mg/l for internationalism limits (WHO,1984) as(250) mg/l .