The pollution level of wastewater from dairy processing enterprises of the Tyumen Region

Abstract

The agro-industrial complex has a huge potential for increasing the efficiency of the use of natural resources, which means it is a good platform for introducing the best available technologies. The main problem is the formation of wastewater. Since dairy enterprises use large enough volumes of water to process containers, equipment, for floor washing as well as use them to cool dairy products. Naturally, the main pollutants are organic compounds. Wastewater from dairy processing plants contains: suspended solids (solids from dairy processing), fats (their content varies depending on the variety of products produced by the enterprise), nitrogen (in the form of amino groups of protein compounds). The pH of the water itself also changes, the value of this indicator will also vary from the volume and range of products. As a result, it was revealed that in the production of 53982 tons of dairy products per year, 496929,2 tons of wastewater is formed, which is 9 times more than the volume of the companys production. In addition, most enterprises in the Tyumen Region do not have an opportunity to drain the resulting wastewater into the central sewage treatment plants for various reasons. This is either a tens of times excess of discharge standards, or the lack of sewage treatment facilities in the settlements where the enterprises are located. In this regard, enterprises of the agro-industrial complex are sources of pollution not only of the atmosphere, soil, but also of water bodies, so the wastewater of dairy plants should be treated and discharged with minimal risk of environmental pollution.

Sanitary and microbiological assessment of wastewater when using a biological treatment system

“…The essence of the biological treatment system was the introduction of microbiological preparations into wastewater according to an individually developed technology. At the same time, air was additionally injected into the water column by a specially installed aerator in the middle of the first pond-filtration map using a patented technology [6].…”