Post-Treatment of Reclaimed Municipal Wastewater through Unsaturated and Saturated Porous Media in a Large-Scale Experimental Model

In recent decades, groundwater overexploitation has caused an important aquifer level decline in arid zones each year. addition to this issue, large volumes of effluent are produced year metropolitan areas these regions. situation, storage and recovery system (ASR) using the reclaimed domestic wastewater can be a local solution two challenges. research, post-treatment municipal been investigated through unsaturated–saturated porous media. A large-scale, L-shaped experimental model was set up near second-stage treatment plant (WWTP) west greater Tehran. The water, soil, treated were supplied from aquifer, site, WWTP, respectively. 13 physicochemical parameters, temperature fecal coliform analyzed every 10 days seven points for period four months (two active periods 40 with 12-h on–off rate (wet cycles) rest (dry cycle) between wet cycles). results showed that effects saturated zone twice as great those unsaturated two-thirds total efficiency. Furthermore, discontinuous wet–dry–wet cycle had significant effect on efficiency contaminants’ reduction. conclusion, is sustainable water resource used agriculture, environmental non-potable demands.