2-Stage Anaerobic Digesters for Starch Effluent Treatment
One stone for two birds. Actually, I love birds and will not do that. This reminds me on what we just did on designing 2-stage anaerobic digesters to treat starch effluent. By doing these activities, the project owners gain the below benefits all at once:
- Reduction of big organic pollutants and generation of biogas or bioenergy,
- Reduces almost 85% fossil fuel electricity for aerobic wastewater treatment plant and reduces maintenance cost for rotating equipment at the aerobic plant,
- Reduces/prevents odours which potentially can create social conflict with peoples around the factory,
- Reduce carbon emissions and at the same time gain benefit from selling it, and
- Achieve treated water discharge standard as stated by government.
Around 800 nm3/h biogas can be captured and fed to biogas boilers for steam production. Less chemical substances or actually no chemicals are required in this 2-stage digester. The plant was designed and supervised by Pakar IPAL Indonesia. The next step will be nutrient or phosphor recovery to give more benefit on this project. Hopefully can be done soonest with our team
Author: Sakti Siregar, ABgI
