Partial Ranking of Membrane Bio-Reactors for Recommendation Systems in Wastewater Treatment

Fei Yang, Ying Wang, Leonid Gillerman, Jack Gilron, Asher Brenner, Moshe Herzberg, Gideon Oron, Amos Bick

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


The research compares four types of different designs of membrane bioreactors: A) with 295 mm draft tube and without plastic carriers; B) plastic carriers and 295 mm draft tube; C) plastic carriers and 235 mm draft tube with two meshes around the bottom and top of a draft tube; D) plastic carriers without a draft tube. The feed for the reactors was artificial wastewater made from domestic wastewater and chicken manure, and membrane test data were based on a hollow fiber membrane module under ambient desert conditions. Process operation type D is the optimal choice. Mathematical analysis using total ranking methods, multi-indicator decision making, and Hasse diagram support this choice. Concerning analysis by the different tools, inconsistencies between the rankings are noticed. Partial order ranking, as a method without any pre-assumptions concerning the possible relation between the single parameters, proves to be an elegant ranking method.
Original languageEnglish
Title of host publicationOperations Research Society of Israel ORSIS 2017 Conference
Subtitle of host publicationBar-Ilan University, Israel
StatePublished - 21 May 2017


  • Fouling
  • Hasse diagram
  • Hybrid growth
  • MBR
  • , Ranking


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