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UDC 628.349:661.63

KINEBAS A. K., NEFEDOVA E. D., PANKOVA G. A., Rublevskaya O. N., Pirogov A. G., Popova N. I., Klimenko A. I.

The experience of introducing the technology of chemical precipitation of phosphorus: from laboratory tests to industrial-scale operation

Summary

Meeting the latest recommendations of the Helsinki Baltic Marine Environment Protection Commission (HELCOM) calls for the introduction of advanced efficient methods of nutrients removal (mainly phosphorus) from municipal and industrial wastewater. Ferix-3 coagulant was chosen as a chemical. Industrial tests of chemical precipitation of phosphorus at the Kolpino, Kronstadt, Metallstroy settlement wastewater treatment facilities, as well as at the Central wastewater treatment plant, South-West wastewater treatment facilities and North wastewater treatment plant of St.-Petersburg are discussed. Chemical injection points and dosages for additional chemical dephosphorization were chosen depending on the treatment technology, automation level, wastewater composition, stability and irregular incoming flow rate.

Key words

sewerage treatment facilities , HELCOM recommendations , municipal and industrial wastewater , laboratory tests , industrial-scale tests , chemical injection points , dosing

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