Studying of BOD5 and COD variations in domestic wastewater after treated by agronomical soil
الموضوعات : Journal of Water Sciences Research
Amir rabiefar
1
(PhD in civil engineering)
الکلمات المفتاحية: COD, Key words: BOD5, domestic wastewater, agronomical soil,
ملخص المقالة :
The objective in this study was the studying of BOD5 and COD variations in domestic wastewater after treated by agronomical soil. In this experiment, we had 15 lysimeters that 1 to 5 lysimeters were irrigated by domestic wastewater and primary drainage water was accumulated from these lysimeters and 6 to 9 lysimeters were irrigated by primary drainage water and secondary drainage water was accumulated and 10, 11 and 12 lysimeters were irrigated by secondary drainage water. In order to compare soil properties, 13, 14 and 15 lysimeters were irrigated by agronomical water and finally, soil and water properties were analyzed in each stage. The results showed that soil could filter the domestic wastewater and reduced BOD5 and COD of domestic wastewater. Also, irrigation with domestic wastewater increased nutritive elements in soil that can be source of nutrition for plants. The findings may give applicable advice to commercial farmers and agricultural researchers for management and proper use of water.
