BROWSE
Our Principle
Composting as a human activity has been around for millennia. Reusing organic waste was once the norm, and large scale landfilling is a relatively recent crime.
The new thing in composting is a shift from bottom-of-the-garden to an industrial scale. This shift requires appropriate engineering and process control to ensure that composting is rapid, uniform, and that the resulting product meets standards.
HotRot 1512
The following issues need to be addressed in an In-Vessel composting unit.
- The material needs to be mixed
- Short circuit and cross-contamination must be avoided
- Monitoring is essential
- Aeration should be optimal
- Emission control is needed
HotRot is an enclosed U-shaped vessel with a central axial shaft. The tine bearing shaft and is periodically rotated to maintain porosity, achieve mixing and aerate the material. Shaft movement is computer controlled and, along with the feed-rate of waste, determines the retention time of material in the composter.
Dr Peter Robinson standing on a HotRot 3518 while talking with Christchurch's Mayor and Councillors at the opening of the Bromley plant in New Zealand
Shaft rotation and aeration are under smart control. The units contain temperature and other sensors, and feedback from these enables the on-board computer to optimise processing. All HotRot units are equipped with Internet connections to enable smooth software upgrades, remote monitoring and control, and facilitate troubleshooting.
