Analysis of the Variability of the Composition of Sewage Sludge Before and After Drying Treatment – SEM Studies

• Autorzy: Kiper Justyna , Głowacka Anna , Rucińska Teresa

Identyfikatory

DOI

10.12911/22998993/109864

• Języki publikacji: EN

Abstrakty

EN

The aim of the study was to determine the physical and chemical properties of the sewage sludge from “Pomorzany” and “Zdroje” municipal wastewater treatment plants located in Szczecin, Poland. The paper presents the outcomes of SEM observation of dried and stabilized sewage sludge. The research on the obtained materials was conducted using reference methods; the images from a scanning electron microscope were used. The amount of sewage sludge produced with the methods of its management was presented. The technology of sludge management is based on its dehydration up to dry weight content of roughly 20% and then drying in contact dryers up to 90–92% dry weight, separately in both plants. Dried sewage sludge is subsequently burned in mechanical grid boilers at “Pomorzany” WWTP. The analyzed materials were characterized by the pH of 7.90–8.42, dry mass and average organic matter content were 18.949% and 68.903%, respectively. The elements identified in the largest amount on the surface of analyzed materials included calcium, iron, phosphorus, sulphur and silicon. The amount of phosphorus ranging from 1.82 to 3.44% indicates the possibility of using sewage sludge as organic fertilizer product or an alternative source of phosphorus.

Słowa kluczowe

EN

sewage sludge; sewage sludge management; SEM observation

• Wydawca: Polskie Towarzystwo Inżynierii Ekologicznej ; Lublin University of Technology
• Czasopismo: Journal of Ecological Engineering
• Rocznik: 2019
• Tom: Vol. 20, nr 7
• Strony: 45--52
• Opis fizyczny: Bibliogr. 25 poz., rys., tab.

Twórcy

autor

Kiper Justyna

• Department of Sanitary Engineering, West Pomeranian University of Technology in Szczecin, al. Piastów 50, 70-311 Szczecin, Poland

autor

Głowacka Anna

• Department of Sanitary Engineering, West Pomeranian University of Technology in Szczecin, al. Piastów 50, 70-311 Szczecin, Poland

autor

Rucińska Teresa

• Department of Building Physics and Building Materials, West Pomeranian University of Technology in Szczecin, al. Piastów 50, 70-311 Szczecin, Poland

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