Purification Performance of Wastewater on the Sand - A Case Study Tamanrasset Region Service Unavailable

This work aims to test the performance of sand slow filtration to treat urban wastewater from the city of Tamanrasset, Algeria. The objective is to carry out a comparative study between two types of sand (Tamanrasset and In Salah) to show the influence of the type of aggregate on the biological filtration performance of wastewater. The analyses carried out in the laboratory showed that the filtrate pH values are between ۷ and ۸ (neutral medium), the values of electrical conductivity (۳.۶-۴.۲ mS/cm) are higher than that of salt water, and the purification yields of suspended solids, chemical oxygen demand (COD), and biochemical oxygen demand exceed ۶۰%, ۵۵%, and ۷۰%, respectively. Our results show that slow sand filtration has a positive impact on the removal of suspended contaminants and biological parameters, and its purification performance is mainly dependent on the types of aggregates and raw water properties.This work aims to test the performance of sand slow filtration to treat urban wastewater from the city of Tamanrasset, Algeria. The objective is to carry out a comparative study between two types of sand (Tamanrasset and In Salah) to show the influence of the type of aggregate on the biological filtration performance of wastewater. The analyses carried out in the laboratory showed that the filtrate pH values are between ۷ and ۸ (neutral medium), the values of electrical conductivity (۳.۶-۴.۲ mS/cm) are higher than that of salt water, and the purification yields of suspended solids, chemical oxygen demand (COD), and biochemical oxygen demand exceed ۶۰%, ۵۵%, and ۷۰%, respectively. Our results show that slow sand filtration has a positive impact on the removal of suspended contaminants and biological parameters, and its purification performance is mainly dependent on the types of aggregates and raw water properties.

کلیدواژه ها:

Tamanrasset ، Wastewater ، Sand Filter ، Performance Purification