تأثير المياه الثقيلة على بعض الصفات الفيزيائية و الكيميائية لمياه قناة شط البصرة

الملخص EN

This study included measuring the concentrations of some physical and chemical factors in the Shatt al-Basrah canal synthetic for the period from November 2014 until March 2015.

The samples were monthly collected of four selected stations of the Shatt al-Basra canal.

The results of the study showed that the temperature of the water was significant monthly changes for all stations.

While, water turbidity was between non-matching in most months since the study recorded (turbidity> 25 NTU), and conform to the specifications allowed for the quality of the water for some months, for all the stations.

Also, the results of Electrical conductivity (EC) measurements and the concentrations of total dissolved salts (TDS) were showed that the water samples contain a high percentage of salinity, making it exceed the standard ratios of drinking water for all months, as the less measurements in the third station (3000) mg /l was recorded.

The total hardness values (TH) for the current study were high for all stations during study period, within a hard water degree.

As, the lower concentration for fourth station for November was recorded, amounting to (2600) mg / l.

The bio- oxygen demanding (BOD5) measurements, which is considered one of the indicators or evidence of organic pollution, a clear -site and quarterly changes are shown, because the stations water affected with the direct subtracting of household waste and factories, without any treatment.

For this reason, the results of the pH of the water samples were weak base for all stations in November between (7.28- 8.2).

Then the gradually lowered in other months due to the large amounts of organic pollutants that analyzed to release the carbon dioxide, which react with water to be carbonic acid, where it helps to reduce the pH.

Which that evident in measurements of CO2 for Basrah canal were high in the winter months (December, January and February) compared with November.

Hence, all the variables exceed the standard limits for drinking water.

While, the water was appropriate for agricultural purposes and living and breeding fish in almost all stations.

It should be noted that the Shatt al- Basrah canal in most of the selected stations from its contents of the total hardness and TDS are invalid for Food Industries