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