Integrated Use of Microalgae in Waste Water Purification and Processing of Food Industry Waste

Abstract

The processing of liquid and solid waste from the food industry using microalgae is considered on the example of St. Petersburg enterprises. Waste water from Baltika Brewing Campaign and food waste from public catering enterprises were used in the work, using the example of food waste from the canteens of Peter the Great St. Petersburg Polytechnic University. Тhe possibility of purifying wastewater from the brewing industry using microalgae was studied. The obtained biomass of microalgae after purification of waste water from the food industry is proposed to be used to accelerate the processes of anaerobic digestion of food waste generated in the canteens of the Peter the Great St. Petersburg Polytechnic University. It has been shown that the addition of microalgae biomass is capable of accelerating the decomposition of food waste and producing more biogas with a maximum methane content.

Production of Biohydrogen from Microalgae Biomass after Wastewater Treatment and Air Purification from CO2

“…Trace elements were added with a nutrient medium [55]. The composition of wastewater of LLC «Baltika» Brewing Company» (St. Petersburg, Russia) (mg/L) is presented in Table 1 [56]. Microalgae were preliminarily grown in a nutrient medium and then mixed in a ratio of 7:3 with wastewater.…”

“…Microalgae were preliminarily grown in a nutrient medium and then mixed in a ratio of 7:3 with wastewater. This ratio was chosen on the basis of previous studies [57,58]. It is optimal because, under these conditions, there is no loss of biomass; it grows well, using pollutants for its nourishment.…”

Nutrients recovery from dairy wastewater by Chlorella vulgaris and comparison of the lipid’s composition with various chlorella strains for biodiesel production

“…In previous papers, C. kessleri grown in brewery wastewater was shown to effectively remove pollutants and accumulate biomass. Moreover, when added to food waste for anaerobic digestion for biogas production, the biomass allowed to obtain higher yields of methane [23,24].…”