Application of dielectric constant measurement in microwave sludge disintegration and wastewater purification processes

Water Science and Technology : a Journal of the International Association on Water Pollution Research
Petra Veszelovszki KovácsSándor Beszédes

Abstract

It has been numerously verified that microwave radiation could be advantageous as a pre-treatment for enhanced disintegration of sludge. Very few data related to the dielectric parameters of wastewater of different origins are available; therefore, the objective of our work was to measure the dielectric constant of municipal and meat industrial wastewater during a continuous flow operating microwave process. Determination of the dielectric constant and its change during wastewater and sludge processing make it possible to decide on the applicability of dielectric measurements for detecting the organic matter removal efficiency of wastewater purification process or disintegration degree of sludge. With the measurement of dielectric constant as a function of temperature, total solids (TS) content and microwave specific process parameters regression models were developed. Our results verified that in the case of municipal wastewater sludge, the TS content has a significant effect on the dielectric constant and disintegration degree (DD), as does the temperature. The dielectric constant has a decreasing tendency with increasing temperature for wastewater sludge of low TS content, but an adverse effect was found for samples with hig...Continue Reading

References

Nov 24, 2004·Angewandte Chemie·C Oliver Kappe
Aug 26, 2006·Journal of Colloid and Interface Science·Christian HoltzeKlaus D Kramer
Apr 25, 2007·Water Research·Cigdem EskiciogluMohamed Hamoda
Aug 1, 2011·Journal of Food Science and Technology·Shyam Narayan JhaRishi Bhardwaj

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Citations

Jan 11, 2019·Water Science and Technology : a Journal of the International Association on Water Pollution Research·Zoltán JákóiSándor Beszédes

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