A comparative analysis of selected wastewater pretreatment processes in food industry

Author:

Jaszczyszyn Katarzyna,Góra Wojciech,Dymaczewski Zbysław,Borowiak Robert

Abstract

The article presents a comparative analysis of the classical coagulation with the iron sulphate and adsorption on bentonite for the pretreatment of wastewater in the food industry. As a result of the studies, chemical oxygen demand (COD) and total nitrogen (TN) reduction were found to be comparable in both technologies, and a 29% higher total phosphorus removal efficiency by the coagulation was observed. After the coagulation and adsorption processes, a significant difference between mineral and organic fraction in the sludge was found (49% and 51% for bentonite and 28% and 72% for iron sulphate, respectively).

Publisher

EDP Sciences

Reference24 articles.

1. Central Statistical Office of Poland, Polish Classification of Activities PKD; in Polish (2007)

2. Eurostat, N.A.C.E. Rev.2. (Office for Official Publications of the European Communities, Luxemburg, 2008)

3. Global Agricultural Information Network, Food Processing Sector Report (Warsaw, 2016)

4. Polish Information and Foreign Investment Agency, Food sector in Poland (Economic Information Department, 2015)

5. Central Statistical Office of Poland, Statistical Yearbook of Industry 2016 (Warsaw, 2017)

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