– Purposes
• For quickly and efficiency determining the technical
feasibility
• Rough approximation of financial feasibility of a
technology
– Ranging from
• Rough experiments (mixing in a beaker) to the
results immediately
• Sophisticated continuous flow experiments using
synthetic wastewater
Treatment Evaluation and selecting Process – Examples of bench-scale study
• Jar test
• Small column ion exchange resins, activated
carbon
• Block aerators microbiological treatability study
– It is seldom advisable to use the results direct
from the bench-scale study to scale up for the
full treatment system (due to the scale up
problems)