Capital cost correlations are given for oil-water separators, equalization basins, primary clarifiers, clarifiers and clarifier mechanisms, reverse osmosis unit, ultrafiltration units, gravity filters and miroscreens. Data are included for raw sewage, intermediate and recirculation pumping stations and for preliminary treatment (or bar screens, grit removal, overflow and bypass chamber and Parshall flume), for grit removal, comminution and gas stripping. The correlations are accurate to ± 30%, expressed in Canadian dollars and adjusted to a Marshall and Swift value of 1000. Details as to what components are included in the cost are given. Data are given for the labour and material costs to create a working process module.
For inflation indices, a critique of the Engineering News Record, EPA small city, Marshall and Swift, Chemical Engineering and Southam inflation indices suggested that the Marshall and Swift index is most appropriate for the construction and process equipment studied here. Concerning the currency exchange, for the equipment and processes in this study, equipment costs the same whether expressed directly in US or Canadian dollars.
To put the current data into perspective, several hundred sources of cost data were analyzed. The major correlations are compared, on a consistent basis, with current data.
On presente des correlations de coǔts en capital pour divers equipements: separateurs huile-eau, bassins ďegalisation, clarificateurs primaires, clarificateurs ordinaires et mecanismes des clarificateurs, systemes ďosmose inverse, systemes ďultrafiltration, filtres gravimetriques et micro-tamis. Des donnees sont fournies pour les eaux usees, les stations de pompage intermediaires et de recirculation et le traitement preliminaire (tamis a barres, retrait des gravillons, chambre de trop-plein et de derivation et canal Parshall), ainsi que pour le retrait des gravillons, la pulverisation et ľepuration des gaz. Les correlations sont precises a ± 30%; elles sont exprimees en dollars canadiens et ajustees a une valeur de Marshall et Swift de 1000. On donne des precisions sur les composantes qui entrent dans le prix. Des donnees sont fournies relativement aux coǔts en main-ďoeuvre et en materiel pour creer un module de precede fonctionnel.
Pour ce qui est des indices ďinflation, une critique des indices ďinflation du Engineering News Record, du modele “small city” de l'EPA, Marshall et Swift, Chemical Engineering et Southam suggere que ľindice de Marshall et Swift est celui qui convient le mieux pour ľequipement de construction et de precedes etudie dans cette etude, les coǔts eequipement etant les měmes, q'ils soient exprimes directement en dollars americains ou canadiens.
Pour mettre les donnees actuelles en perspective, plusieurs centaines de sources de donnees de coǔts ont ete analysees. Les principals correlations sont comparees, de facon coherente, avec les donnees actuelles.
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