Abstract
The current thermal measurement of sewage sludge in urban sewage treatment plants is mainly based on the determination method of coal calorific value. The calorific value of a secondary sewage treatment plant in a city was measured by an automatic calorimeter. The high calorific value of the sample is obtained by referring to the calorific value measuring method of coal. The results show that the sludge drying base heat value in the process section is relatively high, basically all above 12kJ/g. The theoretical analysis of the calorific value of the same batch of samples is in good agreement with the measured results.
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