The concentration of NO3-N for a conventional system ranges from 0 to 1.94 mg N/L. The value varies for different types of septic systems (see Table A-1 of Siegrist et al. (2005)).

References

Siegrist et al. (2005)

The concentration of NH4-N for a conventional system is typically 60 mg N/L (ranging between 17 and 78 mg N/L). The value varies greatly for different types of septic systems (see Table A-1 of Siegrist et al. (2005)).

References

Siegrist et al. (2005)

The BOD for a conventional system is typically 170 mg/L. The value varies greatly for different types of septic systems (see Table A-1 of Siegrist et al. (2005)).

References

Siegrist et al. (2005)

Information of water quality or effluent characteristics required to simulate different types of Onsite Wastewater Systems (OWSs) is stored in the septic water quality database. The information contained in the septic water quality database includes the septic tank effluent flow rate for per capita and the effluent characteristics of various septic systems. The database file distributed with SWAT+ includes water quality data for most conventional, advanced, and failing septic systems. It was developed based on the field data summarized by Siegrist et al. (2005), McCray et al. (2005), and OWTS 201 (2005).

References

Siegrist et al. (2005)

McCray et al. (2005)

OWTS 201 (2005)

McCray et al. (2005) proposed 0.227 m3/capita/day as the median value for the United States based on the data collected from various sources.

References

McCray et al. (2005)

The concentration of organic nitrogen for a conventional system ranges between 9.4 and 15 mg N/L.

The concentration of NO2-N for a conventional system is typically very low.

The amount of fecal coliform for a conventional system is typically 1E7 cfu/100 mL. The value varies greatly for different types of septic systems (see Table A-1 of Siegrist et al. (2005)).

References

Siegrist et al. (2005)

The concentration of TSS for a conventional system is typically 75 mg/L. The value varies greatly for different types of septic systems (see Table A-1 of Siegrist et al. (2005)).

References

Siegrist et al. (2005)

The concentration of organic P for a conventional system is typically 1 mg P/L.

The name of the septic record is a primary key referenced by typ in septic.str. All names in the septic.sep database must be unique.