Review of cost versus scale

Water and wastewater treatment and reuse processes

Tianjiao Guo, James Douglas Englehardt, Tingting Wu

Research output: Contribution to journalArticle

39 Citations (Scopus)

Abstract

The US National Research Council recently recommended direct potable water reuse (DPR), or potable water reuse without environmental buffer, for consideration to address US water demand. However, conveyance of wastewater and water to and from centralized treatment plants consumes on average four times the energy of treatment in the USA, and centralized DPR would further require upgradient distribution of treated water. Therefore, information on the cost of unit treatment processes potentially useful for DPR versus system capacity was reviewed, converted to constant 2012 US dollars, and synthesized in this work. A logarithmic variant of the Williams Law cost function was found applicable over orders of magnitude of system capacity, for the subject processes: activated sludge, membrane bioreactor, coagulation/flocculation, reverse osmosis, ultrafiltration, peroxone and granular activated carbon. Results are demonstrated versus 10 DPR case studies. Because economies of scale found for capital equipment are counterbalanced by distribution/ collection network costs, further study of the optimal scale of distributed DPR systems is suggested.

Original languageEnglish
Pages (from-to)223-234
Number of pages12
JournalWater Science and Technology
Volume69
Issue number2
DOIs
StatePublished - Jan 1 2014

Fingerprint

Water treatment
Potable water
Wastewater treatment
water treatment
drinking water
cost
Costs
Water
Activated sludge process
economy of scale
Reverse osmosis
Flocculation
Ultrafiltration
Coagulation
ultrafiltration
Bioreactors
water demand
flocculation
coagulation
Cost functions

Keywords

  • Distributed
  • Optimization
  • Reuse
  • Scale
  • Size
  • Water

ASJC Scopus subject areas

  • Environmental Engineering
  • Water Science and Technology

Cite this

Review of cost versus scale : Water and wastewater treatment and reuse processes. / Guo, Tianjiao; Englehardt, James Douglas; Wu, Tingting.

In: Water Science and Technology, Vol. 69, No. 2, 01.01.2014, p. 223-234.

Research output: Contribution to journalArticle

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