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Case study on the dairy processing industries and their wastewater generation in Latvia

Published online by Cambridge University Press:  10 December 2021

Basanti Ekka ,
Sandis Dejus  and
Talis Juhna
Basanti Ekka*
Affiliation:
Water Research and Environmental Biotechnology Laboratory, Riga Technical University, Riga, Latvia
Sandis Dejus
Affiliation:
Water Research and Environmental Biotechnology Laboratory, Riga Technical University, Riga, Latvia
Talis Juhna
Affiliation:
Water Research and Environmental Biotechnology Laboratory, Riga Technical University, Riga, Latvia
*
Author for correspondence: Basanti Ekka, Email: basanti.ekka_1@rtu.lv
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Abstract

The objective of the research presented in this Research Communication was to access the environmental impact of the Latvian dairy industries. Site visits and interviews at Latvian dairy processing companies were done in order to collect site-specific data. This includes the turnover of the dairy industries, production, quality of water in various industrial processes, the flow and capacity of the sewage including their characteristic, existing practices and measures for wastewater management. The results showed that dairy industries in Latvia generated in total approximately 2263 × 103 m3 wastewater in the year 2019. The Latvian dairy effluents were characterized with high chemical oxygen demand (COD), biological oxygen demand (BOD) and total solids (TS). Few dairy plants had pre-treatment facilities for removal of contaminants, and many lacked onsite treatment technologies. Most facilities discharged dairy wastewater to municipal wastewater treatment plants. The current study gives insight into the Latvian dairy industries, their effluent management and pollution at Gulf of Riga due to wastewater discharge.

Keywords

Dairy wastewaterenvironmental pollutionLatvian dairy industryBODCODtotal solids
Type
Research Article
Information
Journal of Dairy Research , Volume 88 , Issue 4 , November 2021 , pp. 425 - 428
Copyright
Copyright © The Author(s), 2021. Published by Cambridge University Press on behalf of Hannah Dairy Research Foundation

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