Tag:advanced biological treatment

№3|2021

WASTEWATER TREATMENT

DOI 10.35776/VST.2021.03.05
UDC 628.355:62-278

Lominoga O. A., Kuz’min Valentin, Koloskova Evgeniia

Introduction of membrane technologies at the wastewater treatment facilities of Molodezhnoe settlement

Summary

The experience of introducing membrane wastewater treatment technology at the wastewater treatment facilities in Molodezhnoe settlement (St. Petersburg) is presented. The treatment facilities include: a main pumping station, a combined mechanical wastewater treatment plant, a wastewater regulator, a bioreactor (aeration tank operating using nitri-denitrification technology) for enhanced nitrogen removal, a membrane bioreactor, an ultraviolet effluent disinfection unit, a screw press for excess activated sludge dewatering, aluminum sulfate dosing unit for the chemical removal of phosphorus compounds (phosphates). The effluent after disinfection is discharged through a deep-water outlet into the Gulf of Finland. Membrane filtration provides for the enhanced tertiary treatment to remove fine suspended solids and colloidal particles. To achieve a stable quality of the effluent during the operation of membrane modules, the following requirements shall be strictly met: the high efficiency of screenings removal; prevention of the ingress of foreign particles into the bioreactor after mechanical treatment; high concentration of sludge in the aeration tank and membrane unit; timely chemical washing of the membranes. During the trial operation of the treatment facilities in Molodezhnoe, the irregular hydraulic and pollution loading was noted. During the operation period the operating modes of the facilities were adjusted with account of the irregular characteristics of the incoming flow while achieving the design parameters of the process line of wastewater treatment.

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№2|2010

RESOURCES SAVING

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УДК 628.32

CHURBANOVA I. N., PEVNEV S. G., DATLOVA T. V.

Progressive Techniques of Wastewater Treatment under Restricted Conditions of Urban Development and Power Consumption Limitation

Summary

A flow chart of advanced biological treatment of wastewater under restricted conditions of a development territory and minimization of power consumption for technological needs is presented. This flow chart makes it possible to design and modernize the stations of any output ensuring the achievement of standards of wastewater treated.

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