Serial number | Variable name | Variable type | Variable unit | Serial number | Variable name | Variable type | Variable unit |
A | Fixed assets | L | Ten thousand yuan | 23 | Salaries of pipe network personnel | A | Ten thousand yuan |
2 | Average wage of employees | L | Ten thousand yuan | 24 | Wages of sewage treatment personnel | A | Ten thousand yuan |
3 | Length of drainage pipe | L | km | 25 | Total sewage discharge | A | Ten thousand tons |
4 | Total population | L | Ten thousand yuan | 26 | Total sewage treatment | A | Ten thousand tons |
5 | GDP | L | Ten thousand yuan | 27 | Pipe network operators | A | persons |
6 | Length of drainage pipeline growth rate | R | dmnl | 28 | Sewage treatment personnel | A | persons |
7 | Rate of increase in fixed assets | R | dmnl | 29 | Production water consumption | A | Ten thousand tons |
8 | Average wage growth rate | R | dmnl | 30 | Domestic water consumption | A | Ten thousand tons |
9 | Population growth rate | R | dmnl | 31 | Total water usage | A | Ten thousand tons |
10 | GDP growth rate | R | dmnl | 32 | Average per person maintenance pipe network length | C | km/per capita |
11 | Increase in fixed assets | A | Ten thousand yuan | 33 | Depreciation rate of fixed assets | C | dmnl |
12 | Drainage pipe length increase value | A | km | 34 | Average staffing ratio | C | persons/ten thousand tons |
13 | Increase in average wage of employees | A | Ten thousand yuan | 35 | Average operating cost per ton | C | yuan/ton |
14 | Population growth value | A | Ten thousand persons | 36 | COD content per ton of sewage | C | dmnl |
15 | GDP added value | A | Ten thousand yuan | 37 | COD Electricity single consumption | C | kWh/ton |
16 | Total annual operating cost of COD | A | Ten thousand yuan | 38 | Average electricity price | C | yuan/kWh |
17 | COD total annual processing volume | A | Ten thousand tons | 39 | COD removal rate | C | dmnl |
18 | Annual operating costs | A | Ten thousand yuan | 40 | Amount of domestic water per capita | C | ton/per capita |
19 | Power consumption costs | A | Ten thousand yuan | 41 | Sewage treatment rate | C | dmnl |
20 | Total Payroll | A | Ten thousand yuan | 42 | Sewage discharge coefficient | C | dmnl |
21 | Depreciation of fixed assets | A | Ten thousand yuan | 43 | Water consumption per dollar GDP | C | ton/yuan |
22 | Total COD emissions | A | Ten thousand tons |
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