engleski

REUSE OF SEWAGE SLUDGE – PROBLEMS AND POSSIBILITIES

Each stage of wastewater treatment generates certain quantities of sewage sludge that need to be adequately treated at wastewater treatment plants and disposed of in the environment. Final disposal of sewage sludge is important not only in terms of satisfying the regulations, but the aspect of choosing the optimal wastewater treatment technology, including the sludge treatment. Special emphasis is given on the possibility for reuse of sewage sludge. The paper presents the possibilities of reuse of sewage sludge or byproducts of its treatment (e.g. ash). In the process of sewage sludge incineration special form of ash is generated – incinerated sewage sludge ash (ISSA), which is three to five times less in volume compared to stabilized and dehydrated sludge. ISSA also need to be disposed of in accordance with certain legislation. In this paper special emphasis is given on the possibility and feasibility of reuse of ISSA. Results of the research carried out on cement mortars point to the great possibilities of ISSA incorporation in the concrete industry.

sewage sludge ; wastewater ; WWTP ; sludge reuse ; ISSA ; cement mortar

Ovaj rad je financirala Hrvatska zaklada za znanost projektom (7927) "Reuse of sewage sludge in concrete industry - from microstructure to innovative construction products"