Patent ID: 7967989

Claim:
A groundwater recharging wastewater disposal method comprising: a. injecting sufficient SO 2 into wastewater and wastewater process streams to form an acidified, disinfected, and deodorized wastewater at sufficient acid levels to prevent bicarbonates/carbonate soil deposits from forming, and b. passing the acidified, disinfected and deodorized wastewater through a soil aquifer treatment (SAT) system with a vadose zone, which acts as a natural filter to remove suspended solids, biodegradable materials, bacteria, viruses, microorganisms, reduce nitrogen, phosphorus, and heavy metals concentrations, and remove bicarbonate/carbonate buildup in the SAT system vadose zone soil pores to increase water permeability into an underground aquifer for recharging, wherein a quality of recharging wastewater is provided so that the water in the underground aquifer is not polluted.