Impact of Municipal Wastewater of the Dilijan City on the Hydrochemical Indicators of Water of the Agstev River

The paper discusses that outside the city of Dilijan, the hydrochemical parameters of the Agstev River increase 1.3-2.6 times. This fact can be explained as the city wastewater of Dilijan enters the river without treatment. Discusses that the pollution of household wastewater is mainly due to the flushing of toilets, kitchen and cleaning water polluted with bacteria, viruses, washing and cleaning agents including dirt and rests of food. The amount of pollutants from the municipal wastewater of the city of Dilijan, which gets into the Agst River per day, has been calculated. The calculation shows that the concentrations of phosphates, ammonium nitrogen, total nitrogen, BOD5 value are close to its real value. It was found that the amount of Suspended substances is less than the real values, which is caused by the pollution of the river by surface waters coming from fields outside the city of Dilijan.