A Technique for Treatment of Municipal Waste Water with Biogas Production

Автор: N.S. Ruchai, I.N. Kuznetsov, and T.V. Shkodov

Страница: 52-59

A Technique for Treatment of Municipal Waste Water with Biogas Production

Russian Journal of Biotechnology, 2014, N 6, P. 52-59

UDC 620.95:628.3

Section:  “Ecology”

N.S. Ruchai ¹,  I.N. Kuznetsov ^{1, *},  and  T.V. Shkodov ²

¹  The Belarus State University of Technology,  220050, Minsk Belarus

²  Slonimskii Vodokanal, Ltd.,  231800, Slonim Belarus

e-mail:  i.n.kuznetsov@gmail.com

The influence of ultrasonic and enzymatic pretreatment of raw and active sludge with the biogas production during the anaerobic fermentation has been studied. The possibility of the intensification of the biogas generation by 1.5 and 1.3 times as a result of the ultrasonic or enzymatic treatment, respectively, was shown. A combination of the enzymatic treatment and preacidification at 50° C is recommended. A technological scheme for the anaerobic treatment of raw and active sludge of municipal wastewater in a high-effective UASB-reactor that permits to reduce the time for the treatment from 20—30 days to 1—2 days was developed.

Key words:  enzymatic treatment,  excessive active sludge,  gravity separation,  intensification of biogas generation,  plants for sewer system decontamination,  preacidification of sediment mixture,  raw sediment,  UASB reactor,  ultrasonic treatment.

31.03.2015, 1541 просмотр .