Experimental Research of Sewage Sludge Conditioning with The Use of Selected Biomass Ashes

International Conference on the Sustainable Energy and Environmental Development

生态环境科学

Wójcik, M.^1 ; Stachowicz, F.^1 ; Maslo, A.^2

Department of Materials Forming and Processing, Rzeszow Univeristy of Technology, Al. Powst. Warszawy 8, Rzeszow

35-959, Poland^1

Department of Chemistry and Environmental Engineering, Rzeszow Univeristy of Technology, Al. Powst. Warszawy 6, Rzeszow

35-959, Poland^2

关键词: Chemical conditioning;    Chemical reagents;    Experimental research;    Mechanical dewatering;    Sludge conditioning;    Sludge dewatering;    Treatment plants;    Wastewater treatment plants;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/214/1/012020/pdf
DOI  :  10.1088/1755-1315/214/1/012020

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

The high content of water in sludge results in its big volume and contributes to the high operating costs of wastewater treatment plants. Chemical conditioning is commonly used in order to improve mechanical dewatering in treatment plants. The cost of chemical reagents is significant, thus it is important to find effective and inexpensive conditioners. This paper presents the improvement of sewage sludge dewatering with the use of biomass ashes. In laboratory tests, ashes from willow tree and beech wood combustion were used. The results have shown that the sewage sludge moisture content decreased with the addition of ash. The best results were obtained for the 30 g•dm-3 of biomass ash in both cases. With a 30 g•dm-3 dosage of ash, the moisture content decreased by approximately 9 ÷ 17% for willow ash and about 9 ÷ 21% for beech wood ash, depending of the method of dewatering.