1. ALTERNATIVE TREATMENTS FOR UTILIZATION OF DEHYDRATED SEWAGE WASTE WATER SLUDGE.
- Author
-
Gusarevs, Igors and Lazdiņa, Dagnija
- Subjects
- *
SEWAGE sludge , *FERTILIZERS , *FUEL , *INCINERATION , *DRYING - Abstract
The main aim of the study was to evaluate utilization options of dehydrated waste water sludge (WWS) as fuel and fertilizer. Changes in quality of the final product of three WWS treatment methods were compared - drying, pasteurization and incineration. This paper analyses potential risks and benefits of using waste water sludge as fertilizer and the suitability of using dehydrated and incinerated material as fertilizer. Technological and energy consumption aspects of all three options were analysed. The barriers for implementation of these technologies into common practice are more political than technical. For waste water sludge containing a low content of heavy metals, drying or incineration are more sustainable aftertreatment methods. [ABSTRACT FROM AUTHOR]
- Published
- 2015