Cumulative ventilation air drying potential as an indication of dry mass content in wastewater sludge in a thin-layer solar drying facility

Archives of Thermodynamics

Piotr KrawczykCorresponding authorWarsaw University of Technology, Division of Power Machines and Devices, Institute of Heat Engineering, Nowowiejska 25, 00-665 Warsaw, PolandEmailOther articles by this author:De Gruyter OnlineGoogle Scholar¹ 

[1] Warsaw University of Technology, Division of Power Machines and Devices, Institute of Heat Engineering, Nowowiejska 25, 00-665 Warsaw, Poland

关键词: Keywords: Sewage sludge drying;    Solar drying;    Dry matter calculation;   

DOI  :  10.2478/aoter-2013-0027

学科分类：能源（综合）

来源: Polska Akademia Nauk * Oddzial w Gdansku, Instytut Maszyn Przeplywowych / Polish Academy of Sciences, Institute of Fluid-Flow Machinery

【 摘 要 】

Controlling low-temperature drying facilities which utilise nonprepared air is quite difficult, due to very large variability of ventilation air parameters - both in daily and seasonal cycles. The paper defines the concept of cumulative drying potential of ventilation air and presents experimental evidence that there is a relation between this parameter and condition of the dried matter (sewage sludge). Knowledge on current dry mass content in the dried matter (sewage sludge) provides new possibilities for controlling such systems. Experimental data analysed in the paper was collected in early 2012 during operation of a test solar drying facility in a sewage treatment plant in Błonie near Warsaw, Poland.

【 授权许可】

Unknown