Optimal scheduling of biocide dosing for seawater-cooled power and desalination plants

Abdullah Bin Mahfouz, Selma Atilhan, Bill Batchelor, Patrick Linke, Ahmed Abdel-Wahab, Mahmoud M. El-Halwagi

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

Thermal desalination systems are typically integrated with power plants to exploit the excess heat resulting from the power-generation units. Using seawater in cooling the power plant and the desalination system is a common practice in many parts of the world where there is a shortage of freshwater. Biofouling is one of the major problems associated with the usage of seawater in cooling systems. Because of the dynamic variation in the power and water demands as well as the changes in the characteristics of seawater and the process, there is a need to develop an optimal policy for scheduling biocide usage and cleaning maintenance of the heat exchangers. The objective of this article is to introduce a systematic procedure for the optimization of scheduling the dosing of biocide and dechlorination chemicals as well as cleaning maintenance for a power production/thermal desalination plant. A multi-period optimization formulation is developed and solved to determine: the optimal levels of dosing and dechlorination chemicals; the timing of maintenance to clean the heat-exchange surfaces; and the dynamic dependence of the biofilm growth on the applied doses, the seawater-biocide chemistry, the process conditions, and seawater characteristics for each time period. The technical, economic, and environmental considerations of the system are accounted for. A case study is solved to elucidate the applicability of the developed optimization approach.

Original languageEnglish
Pages (from-to)783-796
Number of pages14
JournalClean Technologies and Environmental Policy
Volume13
Issue number6
DOIs
Publication statusPublished - Dec 2011

Fingerprint

Biocides
Disinfectants
Desalination
Seawater
power plant
pesticide
Scheduling
seawater
Dechlorination
dechlorination
desalination
Power plants
cooling
Chemical cleaning
Biofouling
biofouling
Biofilms
water demand
Cooling systems
power generation

Keywords

  • Biocide
  • Desalination
  • Optimization
  • Power plant
  • Seawater chemistry
  • Seawater cooling

ASJC Scopus subject areas

  • Environmental Engineering
  • Environmental Chemistry
  • Management, Monitoring, Policy and Law

Cite this

Optimal scheduling of biocide dosing for seawater-cooled power and desalination plants. / Mahfouz, Abdullah Bin; Atilhan, Selma; Batchelor, Bill; Linke, Patrick; Abdel-Wahab, Ahmed; El-Halwagi, Mahmoud M.

In: Clean Technologies and Environmental Policy, Vol. 13, No. 6, 12.2011, p. 783-796.

Research output: Contribution to journalArticle

Mahfouz, Abdullah Bin ; Atilhan, Selma ; Batchelor, Bill ; Linke, Patrick ; Abdel-Wahab, Ahmed ; El-Halwagi, Mahmoud M. / Optimal scheduling of biocide dosing for seawater-cooled power and desalination plants. In: Clean Technologies and Environmental Policy. 2011 ; Vol. 13, No. 6. pp. 783-796.
@article{88ab0614814a47ff8f8626e97e3ebb90,
title = "Optimal scheduling of biocide dosing for seawater-cooled power and desalination plants",
abstract = "Thermal desalination systems are typically integrated with power plants to exploit the excess heat resulting from the power-generation units. Using seawater in cooling the power plant and the desalination system is a common practice in many parts of the world where there is a shortage of freshwater. Biofouling is one of the major problems associated with the usage of seawater in cooling systems. Because of the dynamic variation in the power and water demands as well as the changes in the characteristics of seawater and the process, there is a need to develop an optimal policy for scheduling biocide usage and cleaning maintenance of the heat exchangers. The objective of this article is to introduce a systematic procedure for the optimization of scheduling the dosing of biocide and dechlorination chemicals as well as cleaning maintenance for a power production/thermal desalination plant. A multi-period optimization formulation is developed and solved to determine: the optimal levels of dosing and dechlorination chemicals; the timing of maintenance to clean the heat-exchange surfaces; and the dynamic dependence of the biofilm growth on the applied doses, the seawater-biocide chemistry, the process conditions, and seawater characteristics for each time period. The technical, economic, and environmental considerations of the system are accounted for. A case study is solved to elucidate the applicability of the developed optimization approach.",
keywords = "Biocide, Desalination, Optimization, Power plant, Seawater chemistry, Seawater cooling",
author = "Mahfouz, {Abdullah Bin} and Selma Atilhan and Bill Batchelor and Patrick Linke and Ahmed Abdel-Wahab and El-Halwagi, {Mahmoud M.}",
year = "2011",
month = "12",
doi = "10.1007/s10098-011-0352-6",
language = "English",
volume = "13",
pages = "783--796",
journal = "Clean Technologies and Environmental Policy",
issn = "1618-954X",
publisher = "Springer Verlag",
number = "6",

}

TY - JOUR

T1 - Optimal scheduling of biocide dosing for seawater-cooled power and desalination plants

AU - Mahfouz, Abdullah Bin

AU - Atilhan, Selma

AU - Batchelor, Bill

AU - Linke, Patrick

AU - Abdel-Wahab, Ahmed

AU - El-Halwagi, Mahmoud M.

PY - 2011/12

Y1 - 2011/12

N2 - Thermal desalination systems are typically integrated with power plants to exploit the excess heat resulting from the power-generation units. Using seawater in cooling the power plant and the desalination system is a common practice in many parts of the world where there is a shortage of freshwater. Biofouling is one of the major problems associated with the usage of seawater in cooling systems. Because of the dynamic variation in the power and water demands as well as the changes in the characteristics of seawater and the process, there is a need to develop an optimal policy for scheduling biocide usage and cleaning maintenance of the heat exchangers. The objective of this article is to introduce a systematic procedure for the optimization of scheduling the dosing of biocide and dechlorination chemicals as well as cleaning maintenance for a power production/thermal desalination plant. A multi-period optimization formulation is developed and solved to determine: the optimal levels of dosing and dechlorination chemicals; the timing of maintenance to clean the heat-exchange surfaces; and the dynamic dependence of the biofilm growth on the applied doses, the seawater-biocide chemistry, the process conditions, and seawater characteristics for each time period. The technical, economic, and environmental considerations of the system are accounted for. A case study is solved to elucidate the applicability of the developed optimization approach.

AB - Thermal desalination systems are typically integrated with power plants to exploit the excess heat resulting from the power-generation units. Using seawater in cooling the power plant and the desalination system is a common practice in many parts of the world where there is a shortage of freshwater. Biofouling is one of the major problems associated with the usage of seawater in cooling systems. Because of the dynamic variation in the power and water demands as well as the changes in the characteristics of seawater and the process, there is a need to develop an optimal policy for scheduling biocide usage and cleaning maintenance of the heat exchangers. The objective of this article is to introduce a systematic procedure for the optimization of scheduling the dosing of biocide and dechlorination chemicals as well as cleaning maintenance for a power production/thermal desalination plant. A multi-period optimization formulation is developed and solved to determine: the optimal levels of dosing and dechlorination chemicals; the timing of maintenance to clean the heat-exchange surfaces; and the dynamic dependence of the biofilm growth on the applied doses, the seawater-biocide chemistry, the process conditions, and seawater characteristics for each time period. The technical, economic, and environmental considerations of the system are accounted for. A case study is solved to elucidate the applicability of the developed optimization approach.

KW - Biocide

KW - Desalination

KW - Optimization

KW - Power plant

KW - Seawater chemistry

KW - Seawater cooling

UR - http://www.scopus.com/inward/record.url?scp=81855185305&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=81855185305&partnerID=8YFLogxK

U2 - 10.1007/s10098-011-0352-6

DO - 10.1007/s10098-011-0352-6

M3 - Article

AN - SCOPUS:81855185305

VL - 13

SP - 783

EP - 796

JO - Clean Technologies and Environmental Policy

JF - Clean Technologies and Environmental Policy

SN - 1618-954X

IS - 6

ER -