Hydrothane External Circulation Sludge Bed (ECSB) and Upflow Anaerobic Sludge Blanket (UASB) for anaerobic wastewater treatment

Hydrothane offers an anaerobic process design that saves on space and removes noise, odour, corrosion and maintenance issues. The process is suitable for industries with organically laden wastewater, such as chemical, food and beverages, and pulp and paper.

The Hydrothane External Circulation Sludge Bed (ECSB) and Upflow Anaerobic Sludge Blanket (UASB) include a dual-layer separation design, creating good process stability and capacity. The products remove organic content from wastewater, thus purifying it, and use the waste to generate green energy.

Loading rates of the ECSB reactor are typically in the range of 15–35 kg COD/m³ per day, providing a small footprint. The vertical design therefore achieves treatment even within a limited available space.

The overpressurised design can stop air getting in, which would lead to corrosion. It also contains and controls all odour and noise.

Fully controlled hydraulic mixing is achieved by means of an external circulation process. Within the reactor there is no complex internal or rotating equipment, which stops clogging and eliminates maintenance.