Study and evaluation of the pollution in etm in the valley of oued saf-saf and oued Zeramna, Skikda, North-East of Algeria

Abstract

The city of Skikda is ranked third nationally after Algiers and Ouargla; in terms of volume of different waste discharged without treatment it exceeds 250,000 m3/d. Thus, according to a recent study by the Ministry of Environment, the coastal area Skikda is mined by 29 discharge points. This situation forced the establishment of a wastewater treatment and treatment plant (WWTP). The WWTP located in Bantous treats wastewater from the three municipalities of Skikda, Hammadi Krouma and El Hadaïek. This makes it possible to improve the quality of wastewater before its reuse, but there are still other wild discharges that require control and monitoring in order to minimize its pollutants, a solid and liquid sample has been taken to measure the degree of pollution of possible heavy metals in Oeud Safsaf and Oued Zeramna. The results of the atomic adsorption analyses show a high percentage of ETM pollutants in liquid and solid samples show an iron level that varies from 0.2 mg/l to 0.6 mg/l, copper between 0.02 mg/l and 0.03 mg/l, arsenic reaches 0.9 mg/l, cadmium varies between 0.02 mg/l and 0.05 mg/l. Those rates exceed all standards, Algerian, WHO, AFNOR.