Thermal treatment of Municipal Solid Waste: Incineration and Pyrolysis
Abstract:The storage and preparation of waste depends largely on the process for which it is destined (glass recycling, paper production from used paper, composting, incineration). If the waste is prepared for incineration, the process can be described as follows:
The waste transport vehicles deliver the waste to the incineration site, where it is stored in a waste bunker. There are scales to measure incoming quantities of waste, on which the waste transporters are weighed before and after unloading, where the difference is the weight of the load of waste. This is the basis for the fees being charged. The waste bunker has doors – i.e. in the vestibule or directly at the waste chute – to minimise the emission of bad odours. In addition, the combustion air is drawn off/deducted from the bunker – which creates a low-pressure flow that draws odours along with it until combustion, therefore avoiding odour leakage. The waste chute must also be sheltered in a way that no persons or vehicles can accidentally fall into the bunker. Entsorgung+ Recycling Zurich ERZ had one accident happen at the end of the 20th century, where a cross-country vehicle fell backward above the limitation wall of the bunker – the driver was catapulted out of the car and was seriously injured. The storage capacity of the bunker depends on the site's hourly incineration capacity. The rule of thumb is that a bunker has to be voluminous enough to hold a maximum of three days worth of incineration material. The reason is that waste is transported to the site only during working days and not on weekends or public holidays. Incineration has to take place 24 hours a day. There has to be enough material to keep the incineration process going during those days when there are no deliveries. The length of the bunker depends on the number of loading gates that are required next to each other, the width depends on the measurements of the open waste crane head and the height depends on the required quantity.
Document Type: Research Article
Publication date: January 1, 2008