Soil aquifer treatment Secondary, AWT, or None groundwater recharge
Secondary, nitrogen removal Warmer seasons
Treatment Goals Climate Needs Vegetation
Secondary or AWT Warmer seasons Yes
Hydraulic Loading (ft/yr; m/yr)
Effluent Characteristics (mg/L)
BOD, <2 TSS,<2 TN, <3b TP, <0.1 FC, 0c BOD, 5 TSS, 2 TN, 10 TP, <1d FC, 10 BOD, 10 TSS, 10e TN, <10
On-site Secondary to tertiary None No Not applicable for a flow of 1 mgd (3785 m3/d). Size of bed and performance depend on the preliminary treatment level. See Chapter 10.
a For design flow of 1 mgd (3785 m3/d). b Nitrogen removal depends on type of crop and management. c Number/100 mL.
d Measured in immediate vicinity of basin; increased removal with longer travel distance. e Total suspended solids depends in part on type of wastewater applied.
Note: AWT, advanced water treatment; BOD, biological oxygen demand; FC, fecal coliform; TSS, total suspended solids; TN, total nitrogen.
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