Biological treatment of plant waste water

Abstract

The article presents research on creation and implementation of a utility model for wastewater treatment plant (bunded filtration fields) in order to reduce the content of pollutants in water coming from the wastewater of a dairy processing plant. After analysing data on actual concentrations of pollutants in the wastewater treatment plant (bunded filtration fields), flow rates, and species composition of riparian vegetation, it was proposed to develop and implement a biological method for wastewater post-treatment using higher aquatic vegetation. For this purpose a utility model prototype of a floating bio-platform was produced, the size and number of structures were determined. The design of the wastewater treatment utility model includes two units: a structural unit and a vegetation unit. The constructive block included: a frame frame, composite masonry mesh, Equality Mark vapour barrier, and polyamide (braided) cord. The plant block is an artificially created phytocoenosis consisting of grass and turf and additionally higher aquatic plants. The design of the floating bioplata model was placed along the mirror of the reservoir in a line behind each other. When ready, several bioplats were connected together and transported through the water to their installation sites. For the conditions of the forest-steppe zone of the Trans-Ural region the assortment of aboriginal plants was selected and the method of their fixation and cultivation on the water surface was developed. The necessary area of covering of a water body by a bioplate for a decrease in the content of polluting substances in the future is calculated. The developed technology can be applied in any climatic zone with an assortment of higher aquatic vegetation characteristic of the area.