Laboratory scale upflow anaerobic sludge blanket (UASB) trial

Aqua Enviro use two main techniques for assessing feedstocks for treatment via UASB technology:

Bio-chemical Methane Potential (BMP) test and
Laboratory scale trials using bench-scale UASB reactors.

We recommend laboratory scale UASB trials are used as the 2nd stage of assessment to assess the amenability of the feedstock for treatment using UASB technology following BMP testing. UASB trials consist of Bench scale reactors operated at conditions tailored to the specific project requirements.

Examples of what may be assessed using laboratory scale UASB trials:-

UASB stability
Effect of feedstock pre-treatment
Effluent characteristics
Methane yield obtainable from the feed stock
Seeding and/or feeding strategies
Gas composition / trace contaminants
Nutrient requirement
Process optimisation
Chemical Oxygen Demand (COD) destruction
Ramp up regime
Accumulation of inhibitory substances

UASB is a form of anaerobic digester that is used for wastewater treatment. There is a full description here on Wikepedia

UASB reactors are typically suited to dilute waste water streams (3% TSS with particle size >0.75mm).

Associated Downloads

High Rate AD (UASB EGSB AF) Troubleshooting Optimisation WWT Article