Open AccessQualitative composition and local pretreatment of dairy wastewaters
Author(s) -
Elena Vialkova,
О.В. Сидоренко,
Е. С. Глущенко
Publication year - 2019
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/687/6/066049
Subject(s) - wastewater , sewage , environmental science , sewage treatment , biochemical oxygen demand , chemical oxygen demand , pollution , water quality , environmental engineering , composition (language) , waste management , pulp and paper industry , engineering , ecology , biology , linguistics , philosophy
On the territory of the Tyumen region there are a number of enterprises that discharge wastewater without pretreatment into water bodies and disturb their ecological condition. For example, one of the dairy industry plants produces 500 m 3 /day of industrial wastewater, which cannot be discharged even into the domestic sewage system due to its pollution density and aggressiveness. Thus, it is necessary to study wastewater quality and the mode of its inflow for local waste treatment plants’ designing. This article presents the results of the wastewater composition study on such indicators as pH, biochemical oxygen demand, chemical oxygen demand, suspended solids, fats, nitrogen, phosphate and other types of pollution. According to the obtained data, the conclusions were drawn about the wastewater composition inconstancy, associated with peculiarities of dairy production technology. In addition, the drains are characterized by a high variation of pH medium, which decreases sharply when the whey or acid solutions are discharged into the sewage production system after equipment washing. Based on these results, a scheme for organization of a dairy plant water disposal system is proposed, including local pretreatment of wastewater before its dumping into domestic sewage network.