 Greenstar
offers an Anaerobic Digestion (AD) service to treat biowastes
such as sewage sludge, organic farm wastes, municipal biowastes
and other industrial organic and food wastes.
AD differs from composting in that it treats organic materials in the absence of air/oxygen (anaerobic) in a reactor whereas composting works in the presence of air/oxygen (aerobic).
AD is also used for ‘wetter’ waste streams than composting
It has been used for over 150 years to create biogas from biowastes.
Greenstar’s sister company Celtic Anglian Water operates an AD plant in Ringsend, Dublin.
The benefits of AD include:
- It provides an alternative treatment process for Biowaste as opposed to disposing in landfill.
- It can provide an effective means of recycling waste to produce biogas which can be converted to electricity in a Combined Heat & Power (CHP) plant and also produce a digestate which has fertilising/compost qualities and a liquour which is normally an excellent organic fertiliser.
- The advent of climate change policy and renewable energy policy in the form of proposed carbon taxes is making this technology more attractive to businesses that produce Biowaste.
Greenstar currently supplies customer wastes to wet line mesophilic digesters, with the product of the digester being used as a fertiliser.
Greenstar is building a network across Ireland of small and large-scale anaerobic digestion plants in conjunction with key partners. |
