Research Article
Development of a Technology for Treating Wastewater Contaminated with Nitric Acid
Table 3
Estimation of the total capital investment of the wastewater treatment plant.
| Parameters | Fraction of purchased equipment | Calculated values (US$) |
| Direct costs | Purchased equipment | — | 368 014 | Purchased equipment installation | 0.2 | 73 603 | Instrumentation and controls | 0.15 | 55 202 | Piping (installed) | 0.25 | 92 004 | Electrical systems (installed) | 0.08 | 29 441 | Buildings (including services) | 0.1 | 36 801 | Yard improvements | 0.05 | 18 401 | Service facilities (installed) | 0.5 | 184 007 | Total direct costs | — | 857 473 |
| Indirect costs | Engineering and supervision | 0.1 | 36 801 | Construction expenses | 0.2 | 73 603 | Legal expenses | 0.04 | 14 721 | Contractor's fee | 0.15 | 55 202 | Contingency | 0.22 | 80 963 | Total indirect costs | 0.71 | 261 290 | Fixed capital investment (FCI) | — | 1 118 763 | Working capital (WC) | 0.89 | 327 533 |
| Total capital investment (TCI) | | 1 446 296 |
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