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The Cost of Water Treatment by Coagulation, Sedimentation, and Rapid Sand Filtration
Author(s) -
Koenig Louis
Publication year - 1967
Publication title -
journal ‐ american water works association
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.466
H-Index - 74
eISSN - 1551-8833
pISSN - 0003-150X
DOI - 10.1002/j.1551-8833.1967.tb03362.x
Subject(s) - unit (ring theory) , operating cost , environmental science , sedimentation , unit cost , filtration (mathematics) , water treatment , investment (military) , water quality , operations management , environmental engineering , waste management , engineering , statistics , mathematics , ecology , sediment , mechanical engineering , paleontology , mathematics education , politics , political science , law , biology
This paper presents the results of comparative cost engineering audits made on 30 water treatment plants in 1965. The term “cost engineering audit” refers to a detailed investigation and analysis of the physical characteristics, the operating data, and the costs of a plant or other operating installation, and the presentation of these in a standardized manner so that internal and external comparisons can be made. The objectives of the study were to: determine which elements, differentiable from the available plant data, make up the cost of water treatment; determine the relative magnitude of the contribution of each differentiable element; determine the unit consumptions or unit utilizations and the pertinent design factors and operating ratios for the plants studied; determine the unit investment and unit prices paid for materials and services; obtain the unit costs of selected cost elements, or, their contribution to the total cost of treatment; determine the distributions of these operating ratios, design factors unit prices, unit consumptions, and unit costs among all plants in the study; determine the effect of plant size on certain of these ratios such as unit prices and unit investment; determine the effect of climatic, geographic, or administrative factors on certain of these ratios; and, determine the effect that water quality parameters have on the components of water treatment costs on the total cost of water treatment and on the various operating ratios.