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Table 5

Costs calculation of wastewater reuse in Xi'an in 2020

ItemValueUnit priceDepreciation (%)Cost (106 RMB b)
Construction 1.2 × 106 m3/d 2,500–3,000 RMB/m3 4.0 120–144 
Operation 427.2 × 106 m3/yr 1.0–1.5 RMB/m3  427–641 
Pipelines 1,071 kma 10–15 × 106 RMB /km 3.3 357–536 
857 km (80%) 286–429 
534 km (50%) 179–268 
321 km (30%) 107–161 
Total (100%)     904–1,321 
(80%)     833–1,214 
(50%)     726–1,053 
(30%)     654–946 
ItemValueUnit priceDepreciation (%)Cost (106 RMB b)
Construction 1.2 × 106 m3/d 2,500–3,000 RMB/m3 4.0 120–144 
Operation 427.2 × 106 m3/yr 1.0–1.5 RMB/m3  427–641 
Pipelines 1,071 kma 10–15 × 106 RMB /km 3.3 357–536 
857 km (80%) 286–429 
534 km (50%) 179–268 
321 km (30%) 107–161 
Total (100%)     904–1,321 
(80%)     833–1,214 
(50%)     726–1,053 
(30%)     654–946 

aLength of urban water supply pipeline, which was the optimum length of reclaimed water supply pipeline.

bChinese currency unit.

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