• Numerous field trials testing the effectiveness of the total concept of hygienisation and the partial components deployed
• Objective: define amounts of biological waste capable of hygienisation without the need to construct an elaborately constructed compostation facility
• Concept for a facility which measures thermal processes in the interior of a heap of compost beneath GORE TM Cover which also records actual weather conditions and the control variable of air circulation
• Biological probes at certain positions within the compostable matter providing information on the survival of bacteria, germs, micro-organisms and viruses relevant to the actual hygienisation effect

• Special measures to protect sensitive electronic components against an aggressive environment
• Deployment of thermal elements with corrosion resistant stainless steel casings to withstand high levels of acidity and temperatures to 90°C in the core of the compost pile
• Replace connecting cables – depending on location – with PTFE- and PVC -cables
• Thick silicon sleeves to protect various junctions otherwise achieved with plug and socket or push fit connectors
• Measurement of temperature, oxygen concentration and air current speeds in air supply and exhaust channels
• Total balance of the air exchange system is monitored via an additional differential pressure sensor and the exhaust chimneys
• All sensor electric lines are bundled and channelled to a multi-channel measurement device set up in the container and their data recorded on a stationary PC
• A weather station is mounted on the roof of the container to support the data analysis with actual weather measurements

 © 2007, Krah & Grote