Monitoring data 2000/2001
| Bristol WWTF | ||||||||||||||||||
| monitoring period end date | 50050 quantity MGD (average) flow | 00600 concentration mg/l (maximum) nitrogen total (as N) | 00610 concentration mg/l (maximum) ammonia total (as N) | 00615 concentration) mg/l (maximum) nitrite total (as N) | 00620 concentration mg/l (maximum) nitrate total (as N) | 00630 concentration mg/l (maximum) nitrite plus nitrate total (as N) | ||||||||||||
| 2000 | 2001 | change | 2000 | 2001 | change | 2000 | 2001 | change | 2000 | 2001 | change | 2000 | 2001 | change | 2000 | 2001 | change | |
| January | 2.95 | 2.97 | 0.02 | 2.23 | 0.1 | -2.13 | 3.85 | 6.89 | 3.04 | 6.08 | 6.89 | 0.81 | ||||||
| February | 3.15 | 3.96 | 0.81 | 0.10 | 0.05 | -0.05 | 5.8 | 4.5 | -1.3 | 5.80 | 4.5 | -1.3 | ||||||
| March | 4.97 | 5.92 | 0.96 | 0.10 | 0.1 | 0 | 5.69 | 4.8 | -0.89 | 5.69 | 4.8 | -0.89 | ||||||
| April | 4.76 | 5.14 | 0.38 | 0.89 | 0.1 | -0.79 | 8.21 | 4.6 | -3.61 | 9.10 | 4.65 | -4.45 | ||||||
| May | 3.61 | 2.60 | -1.01 | 0.93 | 0.1 | -0.83 | 7.93 | 6.3 | -1.63 | 8.86 | 6.3 | -2.56 | ||||||
| June | 2.88 | 3.26 | 0.38 | 0.05 | 0.1 | 0.05 | 9.01 | 5.1 | -3.91 | 9.01 | 5.1 | -3.91 | ||||||
| July | 2.15 | 2.33 | 0.18 | 0.10 | 0.1 | 0 | 9.3 | 6.4 | -2.9 | 6.63 | 6.4 | -0.23 | ||||||
| August | 2.22 | 2.49 | 0.27 | 0.73 | 0.1 | -0.63 | 0.28 | 6.7 | 6.42 | 1.00 | 6.7 | 5.7 | ||||||
| September | 2.27 | 2.13 | -0.14 | 1.01 | 0.05 | -0.96 | 6.84 | 3.64 | -3.2 | 7.85 | 3.64 | -4.21 | ||||||
| October | 2.01 | 2.06 | 0.04 | 0.10 | 0.05 | -0.05 | 7.34 | 3.7 | -3.64 | 7.34 | 3.7 | -3.64 | ||||||
| November | 2.11 | 1.80 | -0.30 | 41.30 | 0.01 | -41.29 | 9.96 | 5.62 | -4.34 | 51.30 | 5.62 | -45.68 | ||||||
| December | 2.87 | 1.93 | -0.94 | 1.27 | 0.01 | -1.26 | 9.65 | 3.6 | -6.05 | 10.92 | 3.6 | -7.32 | ||||||
| Average change | 0.05 | -4.00 | -1.83 | -5.64 | ||||||||||||||
Maximum Oxygen Demand 2000/2001 (see calculations)
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