The efficiency of wastewater treatment is not only measured by the quality of treated wastewater, but also by the efficiency of treatment and permanent disposal of sludge that is separated. In addition to harmless, the sludge also contains hazardous substances that are released from wastewater during treatment. This work aims to obtain a neutral and harmless product by treating waste sludge with a stabilization and solidification process using modified MID-MIX technology. Physico-chemical analysis has shown that the obtained solidification or neutral, completely inert material, which has a use-value, can be safely disposed of in a sanitary landfill following EU (European Union) regulations. In terms of chemical composition, it is a mixture of crystal-bound organo-calcium, hydrophobic salts with a low moisture content of 5.8%. The results show that the method is the most environmentally friendly and most economical for the treatment of sludge, which can be applied to other types of waste with minor modifications.
Gaceša S, Klašnja M. Water and wastewater technology. 1994.
2.
Nikolic D, Šušteršic V, Skerlic J. Decentralized wastewater treatment in large settlements. In: DEMI 2011, Banja Luka. 2011.
3.
Bradley RB, Daigger GT, Rubin R, Tchobanoglous G. Evaluation of onsite wastewater treatment technologies using sustainable development criteria. Clean Technologies and Environmental Policy. 2002;4:87–99.
4.
Dalmatia B. Water quality control within quality management. 2000.
5.
Ilić-Stamenković M, Gavrilovski D, Malešević Z. Wastewater treatment efficiency. Ecologica. 2018;25(89):18–23.
6.
Milojevic M. Theoretical and practical bases of sludge treatment, use and disposal. Technical book Belgrade. 1985;
7.
Andersen A. Disposal and Recycling Routes for Sewage sludge: Part 3 – Scientific and Technical Report. 2001.
8.
Kos D, Tufegdzic R. Concept of a plant for the treatment of hazardous sludge from wastewater from primary copper metallurgy in RTB-Bor, with the application of the stabilization and soldification process, Delta-inženjering Belgrade. Processing. 2016;16.
9.
Simić S, Stanojević M. Consideration of the possibility of using waste sludge in the cement industry. Proceedings of the International Congress on Process Industry- Processing. 2017;23(1).
10.
Brkljač N, Šević D, Beker I, Kesić I, Milisavljević S. Procedure for treatment of hazardous waste by MID-MIX procedure in Serbia. Inter-nacional Journal of the Physical Sciences. 2012;7 (18:2639–46.
11.
Teng LD, Seetharaman S, Nzotta M. Retention, recovery and recycling of metal values from high alloyed steel slags. Archives of metallurgy and materials. 2010;55(4).
12.
Tomašević-Pilipović D. Characterization of waste sludge from tailings treated with fly ash and red sludge for the purpose of solidification / stabilization. Material Protection. 2018;59(1):82–91.
13.
Vouk D, Nakić D, Štirmer N, Serdar M. Use of sludge from wastewater treatment plants in the concrete industry, ITG d.o.o.Zagreb. 2015.
14.
Langton CA. Chemical Fixation and Stabilization. In: Chang HO, Hazardous and Radioactive Waste Treatment Technologies Handbook. 2001.
15.
Study on the research of optimal treatment of waste sludge from WWTP “Gorić.” 2020.
16.
Official Gazette of RS. 2009;(36).
17.
Markanović D. Disposal of waste sludge from wastewater devices. Hrvatska vodoprivreda br. 2014;206.
18.
Ilic M. Sustainable Waste Management and Recycling, National Strategy for Sustainable Development. 2011.
19.
EPA USP. Method 3051A. Sludges, and Oils, ”Revision. 2007;1:846.
20.
CEN/TC 292 – Characterization of waste, 99/31/EC. EN. 2002;12457–4:2002,.
21.
Directive C. Official Journal L. 91AD;135:40–52.
22.
Ivšić-Bajčeta D, Kamberović Ž, Korać M, Gavrilovski M. A soli-dification/ stabilization process treatment from a prymary copper smelter. J Serb Chem Soc. 2013;78(5):725–39.
23.
Lederer J, Rechberger H. Comparative goal-oriented assessment of conventional and alternative sewage sludge treatment options. Waste Management. 2010;30:1043–56.
24.
Došić A, Tomašević-Pilipović D, Gligorić M, Dalmacija B, Kerkez D, N. S, et al. Green remediation of tailings a from the mine using inorganic agents. Chemical Industry. 2017;71(2):155–65.
25.
Kerkez D. Potential of pyrite burnout use in wastewater treatment and possibility of its further remediation using immobilization agents. 2014.
26.
Regulation on emission limit values for pollutants in water and deadlines for their achievement. Official Gazette of RS. 48AD;(67/2011).
27.
Vujić G, Batinić B, Stanisavljević N, Ubavin D, Živančev M. Analysis of the situation and strategic framework in waste management in the Republic of Serbia. Recycling and Sustainable Development. 2011;(4).
28.
Begić S, Mićić V, Petrović Z, Tuzlak S. Investigation of the characteristics of the process of neutralization of acidic wastewater with lime sludge. Journal of Engineering & Processing Management. 2014;6(1).
Citation
Copyright
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
The statements, opinions and data contained in the journal are solely those of the individual authors and contributors and not of the publisher and the editor(s). We stay neutral with regard to jurisdictional claims in published maps and institutional affiliations.
