you can use UASB

for small scale the design

refers to filler area of zeolite (tuff)

Depth = 3-3.5m ( about one meter will be left for Gas -liquid-solid separation)

HRT = 1-2days

0.5 m/h

thank you sir Mohammad K. Younes

Hi, Sabarish Ravi

Designing a digester for AD, irrespective of the substrate, requires many things to be done prior. They are,

1. Digester/reactor size: Dependent on what scale the experimental design and substrate are to be addressed.

2. Substrate concentration: Decided by the strength of the substrate.

3. Substrate/Inoculum ratio: Generally, various ratios are experimented with, and the ideal one is finalised.

4. Co-digestate ratio: Based on the waste composition and type.

5. Reactor type: Equipment availability. Established laboratory facilities go for high-end reactor facilities, whereas the others go for traditional and basic reactors.

6. Analysis: Pre, during, and post-experiment analysis we are going to be done gives a clear idea about the requirements for the experiment and the work to be carried over.

From the question, it is clear that the substrate is organic and wet, so AD is the best approach. However, AD can be done with many techniques, which a clear idea for the process to be known well ahead.

I hope this answer helps.

Thanks!