Decrease of greenhouse gases
The nitrous oxide (N 2O) emitted from wastewater sludge incinerators is believed to have a greenhouse effect that is 310 times higher than that of CO 2, a typical greenhouse gas. Since a high concentration of N 2O is emitted from wastewater sludge incinerators, a reduction in the emission of N 2O by the incinerators will significantly contribute to the prevention of global warming.
Circulation-type, multi-layer incinerator
METAWATER has started developing a novel sludge incineration system that will reduce greenhouse gas emissions.
By combining the circulation furnace (which is highly compatible with load fluctuations and mixed incineration) with our multi-layer incineration technology (which was successfully developed and embodied by products), we are committed to decreasing greenhouse gases and reducing lifecycle costs.
Novel control technology: Circulation-type, multi-layer incineration control (model-based predictive control)
With the zone incineration technology used in our commercialized multi-layer incinerator, it was difficult to realize this technology using the conventional method (PID control) because it was necessary to simultaneously adjust multiple factors, such as supplemental fuel and primary air. With the model-based predictive control, it is possible to control multiple factors at the same time based on the prediction of future states, which is based on the current furnace conditions (plant states such as temperature, flow rate, etc.) using a plant model. This improvement has made it possible to reduce both fuel consumption and greenhouse gas (N 2O) at the same time through multi-layer incineration.
