
Oxidative thermochemical treatment
An introduction to oxidative sludge thermochemical treatment methods
Your web browser is out of date.
Update your browser for better security, speed and to get the best experience on this website.
Thermochemical methods are used for either:
As with stabilisation and drying processes, thermochemical processes produce a stable sludge product. When operated at elevated temperatures, i.e. for solids destruction rather than AD pre-treatment, they provide energy recoverable either as heat or a combustible gas or liquid.
An introduction to oxidative sludge thermochemical treatment methods
Sign up to the SludgeProcessing.com newsletter
An introduction to non-oxidative sludge thermochemical treatment methods
An example of Valmet's gasification technology
Biochar is the organic solid char product from biomass pyrolysis, i.e. thermal treatment in a (mostly) oxygen-free atmosphere. It has many potential uses, e.g. as an adsorbent for pollutant removal, but its main application is in agriculture.
Read articlePyrolysis refers to the decomposition of organic matter at elevated temperatures in the absence of oxygen and water
Gasification is an extension of the pyrolysis process for thermochemical treatment of sludge
Hydrothermal sludge treatment employs elevated temperatures and pressures in wet conditions and in the absence of oxygen