Robust thickening digester for thicker slurries
Clearfleau's Anaerobic Thickening Digester converts suspended (volatile) solids from higher solid content liquid effluent into biogas, removing chemical oxygen demand and biological oxygen demand (COD and BOD). The thickening process creates improved contact between volatile solids and the microbes that digest them.
The Thickening Digester is designed to break down thicker liquids and slurries, including food manufacturing waste and dairy solids (which can be combined with livestock slurry). Clearfleau's pilot unit can be adapted for a range of waste streams on your site.
Reducing digester tank volume is the key to Clearfleau's Thickening Digester. Biogas production is enhanced by de-coupling the hydraulic retention time (the period for which the liquid fraction stays in the digester) from the longer volatile solids retention time.
To reduce the liquid retention time and overall size and footprint of the unit, the Thickening Digester operates with continuous waste concentration. The in-line recuperative thickening compensates for anaerobic solids degradation - thus maintaining the solids in the digester tank at a constant level.
Key advantages of Clearfleau's Thickening Digester over conventional digestion systems include:
- Smaller Reactor size - reducing capital costs and plant footprint
- Energy Efficiency - mixing is less costly with lower energy needs
- Reactor Versatility - it can be used for a range of waste streams
Clearfleau has modified its Thickening Digester technology for the biofuels sector that generates significant volumes of bio-waste. This unit can cleanse biofuel residues and generate biogas.
For more information and to arrange a site visit, please call 0844 477 6292 or email info@clearfleau.com
The Thickening Digester can provide cheaper, more effective digestion of a range of bio-wastes. A pilot unit is available for trials with specific waste streams. This plant is currently involved in a bio-fuel waste trial but will also be available for use in the food sector.
