Effect of temperature on anaerobic treatment of black water in UASB-septic tank systems

S. Luostarinen, W.T.M. Sanders, K. Kujawa-Roeleveld, G. Zeeman

Research output: Contribution to journalArticleAcademicpeer-review

70 Citations (Scopus)

Abstract

The effect of northern European seasonal temperature changes and low temperature on the performance of upflow anaerobic sludge blanket (UASB)-septic tanks treating black water was studied. Three UASB-septic tanks were monitored with different operational parameters and at different temperatures. The results indicated the feasibility of the UASB-septic tank for (pre)treatment of black water at low temperatures with respect to removal of suspended solids and dissolved organic material. Inoculum sludge had little effect on CODss removal, though in the start-up phase some poorly adapted inoculum disintegrated and washed out, thus requiring consideration when designing the process. Removal of CODdis was at first negative, but improved as the sludge adapted to low temperature. The UASB-septic tank alone did not comply with Finnish or Dutch treatment requirements and should therefore be considered mainly as a pre-treatment method. However, measuring the requirements as mgCOD l-1 may not always be the best method, as the volume of the effluent discharged is also an important factor in the final amount of COD entering the receiving water bodies
Original languageEnglish
Pages (from-to)980-986
JournalBioresource Technology
Volume98
Issue number5
DOIs
Publication statusPublished - 2007

Keywords

  • waste water treatment
  • sludge treatment
  • households
  • excreta
  • anaerobic digesters
  • sludge digestion
  • temperature
  • comparative research
  • feasibility studies
  • environmental temperature
  • waste-water
  • domestic sewage
  • reactors
  • digestion

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