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Aerobic digestion

Aerobic digestion is the degradation of the organic sludge solids in the presence of oxygen. The oxygen is introduced as fine bubbles of air into the reactor. The micro-organisms in the sludge convert the organic material to carbon dioxide and water, and the ammonia and amino species to nitrate. Aerobic digestion resembles the conventional activated sludge (CAS) process but excludes a wastewater feed and employs longer solids retention times.


Aerobic digestion related videos

Conventional activated sludge (CAS) process Source: Judd Water & Wastewater Consultants / YouTube

Conventional activated sludge (CAS) process

Aerobic wastewater treatment with classical activated sludge. A taster for Judd Water & Wastewater Consultants' 'MBR Insights' training package, in this video Simon Judd explains classical aerobic wastewater treatment.

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Aerobic digestion features and blogs

HTC/AD integration flowsheet
Feature

Co-processing of sewage digestate by hydrothermal carbonisation

Hydrothermal carbonisation (HTC) can be used to co-process anaerobic digestion (AD) digestate and lignocellulosic (or plant-based) feedstocks to improve the the hydrochar product quality. This AD waste co-processing route has been studied at bench scale.

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