Re-use of thermal energy
Composting generates massive amounts of thermal energy. Innovative technology from WTT can catch this process heat and use it somewhere else as an alternative energy source. Useful applications for this thermal energy are:
- Heat process buildings to increase the temperature in wintertime. This also lowers the relative humidity inside the building and thereby improves building conditions.
- Pre-heat the process fresh air to improve evaporation rates and reduce cycle times. Throughput can be increased considerably for facilities in colder regions.
- Use the heat to dry other types of products like RDF, biomass, peat, etc.
- Sell the heat to neighboring operations that have a high heat demand, like greenhouses.
The perfect air flow for a composting tunnel
AA lot of facilities run with sub-optimized air flows, which costs a lot of energy. Our process engineers are constantly looking to improve this in both new facilities and existing facilities. If an interesting business case can be developed, we perform Computational Fluid Dynamics (CFD) simulations to optimize the specific area in the best way possible. The result of the simulation allows us to redesign and replace the suboptimal inefficient parts. Optimizing the air flows can result in more than 5% energy savings.
The next stage in odour abatement
Odour abatement systems are at the core of each organic waste treatment facility. The buildings are ventilated to remove contaminated air from the work environment. In addition, process air is treated with a wet-scrubbing process to remove ammonia. A by-product from this scrubbing process is ammonium sulfate, an interesting fertilizer that can be marketed to local farmers. WTT developed a two-stage acid scrubber that greatly improves the ammonium sulfate quality. In addition, this system prevents contamination from causing blockage in the wet scrubber. This greatly reduces pressure losses and decreases energy consumption. In addition, maintenance costs can go down with 50% and downtime is reduced.
If you want to learn more about these examples or any of the other upgrades we can perform for your facility please contact us.