How does ANUBIX™ – B work?
In a typical plant, wastewater is first screened and then collected in a buffer tank equipped with an agitator. This tank is designed to allow sufficient qualitative and quantitative equalization and to acidify the wastewater partially. This allows for more stable operation and better sludge quality in the next stage: the ANUBIX™ – B anaerobic reactor. Provisions will be made for pre-settling of solids, heating, cooling, CO2 degasification, and inline neutralization if required as part of the overall process.
Raw wastewater is fed into the ANUBIX™ – B reactor through an internal influent distribution system and rises from the bottom to the top part of the reactor at a predetermined speed, after passing through a bed of active anaerobic sludge. Anaerobic digestion of organic material takes place in the ANUBIX™ – B anaerobic reactor. Organic compounds (such as sugar) are primarily degraded by anaerobic bacteria (sludge) and converted into biogas (a mixture of methane and carbon dioxide). Only a small amount of sludge growth takes place at this stage.
At the bottom of the ANUBIX™ – B reactor, the sludge becomes highly concentrated (up to 10% DS) and develops a granular structure. At sufficient hydraulic stress and under the appropriate conditions, which are created by the ANUBIX™ – B reactor, the granular structure is achieved spontaneously, without the need for additives.
