Fresh water resources alone cannot meet the growing water demand and therefore wastewater is a growth may lead to excessive exploitation of groundwater to meet the demand. Reuse of treated wastewater through groundwater recharge has emerged as an integral part of water and wastewater management in arid and semi-arid regions of the word. In most of the reuse systems in practice, infiltration is carried out by subjecting conventional secondary treatment effluent to tertiary filtration prior to soil aquifer treatment (SAT). Это и многое другое вы найдете в книге Ammonia Behavior During SAT system (Mohammad Al Khateb,Thaer Abushbak and Adnan Aish)