The Anaerobic Digestion of Textile Desizing Wastewater

Richard Dinsdale*, Kevin Bryne, David Tucker

*Corresponding author for this work

    Research output: Chapter in Book/Report/Conference proceedingChapterpeer-review


    Anaerobic digestion is a biological process which converts the chemical oxygen demand (COD) present in wastewater to methane and carbon dioxide and thus can be used to reduce the treatment costs of industrial wastewaters. Textile desizing wastewater is a high strength wastewater (20,000mg-1 COD) and extremely alkaline (>pH 12) and therefore is costly to discharge to sewer and will require neutralisation to a lower pH before discharge to sewer. An anaerobic treatment stage consisting of two 50m3 mesophilic upflow anaerobic sludge blanket reactors (UASB) with an activated sludge polishing stage was built and operated from August 2003. This wastewater treatment plant has contributed to a COD reduction of up to 80% and a neutralisation of the pH from pH 12 to pH 7-8. The methane present in the biogas is utilised to heat the anaerobic digesters and the CO2 produced in the biogas is used to neutralise the alkali in the wastewater. This results in an in-house wastewater treatment process with low running costs i.e. low in energy demand and chemical usage.

    Original languageEnglish
    Title of host publicationEcotextiles
    Subtitle of host publicationThe Way Forward for Sustainable Development in Textiles
    EditorsM Miraftab, A. Richard Horrocks
    Number of pages5
    ISBN (Print)9781845692148
    Publication statusPublished - 30 Jan 2007


    • wastewater
    • anaerobic digestion
    • biogas
    • in-house water treatment
    • biological treatment systems


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