Advanced fuzzy control in industrial wastewater treatment (pH and temperature control)

Tawanda Mushiri, Karen Manjengwa, Charles Mbohwa

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

3 Citations (Scopus)


Wastewater reuse is being increasingly promoted as a strategy for conservation of limited resources of freshwater and as a mean of safeguarding the aquatic environment from contaminants present in wastewater. Waste water disposed of in the ground reduces the quality of ground water and surface waters. Untreated waste-water generally contains high levels of organic material, numerous pathogenic microorganisms which entails environmental and health hazards. In this project, a design of an automated control for industrial waste water treatment using fuzzy logic control is presented. Fuzzy control concepts have been adopted and control algorithms based on pH and temperature variations provided accurate and reliable treatment of waste water. Two inputs, pH and temperature, and four outputs, hot and cold water valve and acid and base valve were given to the system. The behavior of the system was observed whenever an input came in. the pH was to be kept at a neutral status of between 6.5 and 7.5 and the temperature had to be kept within a range of between 25°C and 35°C. The fuzzy rules managed to keep the system stable as was seen from the graphs.

Original languageEnglish
Title of host publicationWorld Congress on Engineering, WCE 2014
PublisherNewswood Limited
Number of pages6
ISBN (Print)9789881925275
Publication statusPublished - 2014
EventWorld Congress on Engineering, WCE 2014 - London, United Kingdom
Duration: 2 Jul 20144 Jul 2014

Publication series

NameLecture Notes in Engineering and Computer Science
ISSN (Print)2078-0958


ConferenceWorld Congress on Engineering, WCE 2014
Country/TerritoryUnited Kingdom


  • Fuzzy Controller
  • PH
  • Temperature

ASJC Scopus subject areas

  • Computer Science (miscellaneous)


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