Domestic train influent flows and constituent loadings for the intensive evaluation period of December 2010 through October 2012 are compared in Table 2 with the design values and demonstrate that the domestic train was essentially loaded to design average values through this period. The average influent flow was marginally lower than the design value, while constituent loadings exceeded the design values modestly for most parameters. Thus, this period is appropriate for assessing the capability of the plant under full design load. Table 3 summarizes domestic MBR influent (primary effluent) flows and constituent loadings for the same period, compared to the design values, further confirming that the domestic train MBR was loaded to its design values. Flows and constituent loadings were similar in 2013 and 2014, indicating again that the domestic train MBR was consistently loaded to its design values.
Comparison of domestic train loadings with design values for December 2010 through October 2012
. | Values, December 2010 through October 2012 . | . | . | ||
---|---|---|---|---|---|
Item . | Average . | Standard deviation . | Number data points . | Design average . | Ratio actual to design . |
Flow (m3/day) | 14,600 | 4,580 | 629 | 15,200 | 0.96 |
BOD5 (kg/day) | 3,583 | 1,980 | 63 | 3,574 | 1.06 |
COD (kg/day) | 8,057 | 2,720 | 238 | 7,062 | 1.14 |
TSS (kg/day) | 3,973 | 1,832 | 206 | 3,509 | 1.13 |
VSS (kg/day) | 3,194 | 1,406 | 197 | – | – |
TN (kg/day) | 588 | 178 | 350 | 609 | 0.92 |
TP (kg/day) | 133 | 65 | 238 | 130 | 1.02 |
. | Values, December 2010 through October 2012 . | . | . | ||
---|---|---|---|---|---|
Item . | Average . | Standard deviation . | Number data points . | Design average . | Ratio actual to design . |
Flow (m3/day) | 14,600 | 4,580 | 629 | 15,200 | 0.96 |
BOD5 (kg/day) | 3,583 | 1,980 | 63 | 3,574 | 1.06 |
COD (kg/day) | 8,057 | 2,720 | 238 | 7,062 | 1.14 |
TSS (kg/day) | 3,973 | 1,832 | 206 | 3,509 | 1.13 |
VSS (kg/day) | 3,194 | 1,406 | 197 | – | – |
TN (kg/day) | 588 | 178 | 350 | 609 | 0.92 |
TP (kg/day) | 133 | 65 | 238 | 130 | 1.02 |
BOD5: biochemical oxygen demand; COD: chemical oxygen demand; TSS: total suspended solids; VSS: volatile suspended solids; TN: total nitrogen; TP: total phosphorus.
Comparison of MBR loadings with design values for December 2010 through October 2012
Item . | Design . | Actual . | Ratio actual to design . |
---|---|---|---|
Flow (m3/day) | 14,300 | 13,500 | 0.94 |
BOD5 (kg/d) | 2,964 | 3,133 | 1.05 |
COD (kg/d) | 5,517 | 5,700 | 1.03 |
TSS (kg/d) | 1,673 | 1,728 | 1.03 |
VSS (kg/d) | 1,157 | 1,357 | 1.19 |
TN (kg/d) | 567 | 480 | 0.85 |
TP (kg/d) | 120 | 111 | 0.92 |
Item . | Design . | Actual . | Ratio actual to design . |
---|---|---|---|
Flow (m3/day) | 14,300 | 13,500 | 0.94 |
BOD5 (kg/d) | 2,964 | 3,133 | 1.05 |
COD (kg/d) | 5,517 | 5,700 | 1.03 |
TSS (kg/d) | 1,673 | 1,728 | 1.03 |
VSS (kg/d) | 1,157 | 1,357 | 1.19 |
TN (kg/d) | 567 | 480 | 0.85 |
TP (kg/d) | 120 | 111 | 0.92 |