序号 | 项目 | 公式 | 符号说明 | ||||||
1 | 处理效率 | E | = | 0.97 | E | = | 0.97 | — | BOD去除效率(%) |
La | = | 2.1 | — | 进水BOD浓度(kg/m3) | |||||
Lt | = | 0.06 | — | 出水BOD浓度(kg/m3) | |||||
Lr | = | 2.04 | — | 去除的BOD浓度(kg/m3) | |||||
2 | 曝气池容积 | V | = | 1813.33 | V | = | 1813.33 | — | 曝气池容积(m3) |
| Q | = | 800 | — | 进水设计流量(m3/d) | ||||
N'ω | = | 2.25 | N' | = | 2.25 | — | 混合液挥发性悬浮物(MLVSS)浓度(kg/m3) | ||
Fr | = | 0.90 | f | = | 0.75 | — | 系数,一般取0.7~0.8 | ||
| Nω | = | 3 | — | 混合液悬浮物(MLSS)浓度(kg/m3) | ||||
V | = | 1813.33 | Fω | = | 0.4 | — | 污泥负荷(kg BOD/kg MLVSS.d) | ||
| Fr | = | 0.9 | — | 容积负荷(kg BOD/m3.d) | ||||
3 | 水力停留时间 | tm | = | 2.27 | tm | = | 2.27 | — | 名义水力停留时间(d) |
| ts | = | 1.74 | — | 实际水力停留时间(d) | ||||
ts | = | 1.74 | R | = | 0.3 | — | 污泥回流比 | ||
4 | 污泥产量 | Y | = | 693.60 | Y | = | 693.6 | — | 系统每日排出剩余污泥量(kg/d) |
a | = | 0.55 | — | 污泥增殖系数,一般0.5~0.7 | |||||
| b | = | 0.05 | — | 污泥自身氧化率(1/d),一般0.04~0.1 | ||||
y | = | 0.17 | y | = | 0.17 | — | 每公斤污泥每日产泥量(kg/kg MLVSS.d) | ||
x | = | 0.43 | x | = | 0.425 | — | 取出每公斤BOD产泥量(kg /去除kgBOD) | ||
5 | 泥龄 | tω | = | 5.88 | tω | = | 5.88 | — | 泥龄,亦称污泥停留时间,即SRT (d) |
= | 5.88 | q | = | 308.27 | — | 剩余污泥排放量(m3/d) | |||
q | = | 308.27 | | | | | 当剩余污泥由曝气池排出时 | ||
= | 71.14 | | | | | 当剩余污泥由二沉池排出时 | |||
6 | 曝气池需氧量 | O | = | 1305.60 | O | = | 1305.6 | — | 混合液每日需氧量(kgO2/d) |
| a' | = | 0.5 | — | 氧化每kgBOD需氧公斤量(kgO2/kgBOD) | ||||
△Oa | = | 0.32 | | | | | 一般0.42~0.53 | ||
| b' | = | 0.12 | — | 污泥自身氧化需氧率(1/d,即kgO2/kg MLVSS.d) | ||||
△Ob | = | 0.80 | | | | | 一般0.188~0.11 | ||
| △Oa | = | 0.32 | — | kg污泥每天需氧量(kgO2/kg MLVSS.d) | ||||
| △Ob | = | 0.8 | — | 去除每kgBOD需氧量(kgO2/去除kgBOD) |
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