Study of the effect of industrial waste on the chemical, physical and biological content of the Tigris River within the city of Samarra

Abstract

This study included the selection of three stations, two of them on the Tigris River passing through the city of Samarra, and the second station representing industrial wastewater - Samarra. The study period was for six months, starting from October 2021 until March 2022. The study included knowing the chemical, physical and biological properties of the industrial wastewater plant and river water and observing the effect of industrial wastewater on the water quality in the Tigris River. The chemical factors included pH, dissolved oxygen and the biological requirement for oxygen, while the physical factors included air temperature, water temperature and total dissolved salts. The results showed that the pH values tended to be alkaline , ranging between 6.6 - 8.7, and dissolved oxygen showed similar values, ranging between 3.8 - 9 mg / l, and the values of the vital oxygen requirement ranged between 0.8 - 30 mg / l, the air temperature ranged between 7 - 32 ° C, the water temperature ranged between 5 - 26 ° C, the values of total dissolved salts ranged between 210 - 1380 mg / l, the total number of coliform bacteria (TC) 0 - 1100 cells / 100 ml.

Some Chemical Properties of Wastewater from the Pharmaceutical Production Processes in the State Company for Drug and Medical Appliances Samarra

“…The results were within the US Environmental Protection Agency US-EPA2002 specification, which amounted to 250 mg /l. The results of this study had higher values than the results reached by [25], and higher than the values reached by [26] in his study on the Diyala River, and this study agreed with the study of [27], for total alkalinity values.…”