Tag:eutrophication

№9|2013

155th anniversary of SUE «Vodokanal of St. Petersburg»

bbk 000000

UDC 628.55(261.24)

Probirsky M. D., Rublevskaya O. N., Lysova Tat’iana

The contribution ofSUE «Vodokanal of St. Petersburg»to Russia fulfilling the international commitments on theBaltic Marine Environment Protection

Summary

To meet the recommendations of the Helsinki Commission on the Baltic Marine Environment Protection the experts of SUE «Vodokanal of St. Petersburg» developed a 5–7 years rehabilitation program for the Ladoga and Onega Lakes basins. The program envisages construction of new or upgrade of the existing municipal and community wastewater treatment facilities; enhanced removal of toxic substances from wastewater at the industrial facilities; efficient processing of livestock and poultry farm wastes with the utilization of their useful properties and energy potential. The progress in implementing measures on abatement of discharging raw wastewater into the Gulf of Finland, upgrade and reconstruction of the wastewater treatment facilities, wastewater treatment efficiency improvement, particularly in relation to the technologies developed by the Universities of Cape Town (UCT) and Johannesburg (JHB) with the use of membrane aerators, mixers, nitrate recycling, and also to the European technology of chemical phosphorus precipitation is described. The dynamics of reducing nutrient loading on the St. Petersburg water bodies is presented. The positive effect of putting into operation the Main tunnel sewer has been achieved. The program of the municipal sewer rehabilitation has been developed and is now underway. The results of activities related to waste and toxic substances removal are presented. The works carried out will contribute to the prevention of the Gulf of Finland eutrophication.

Key words

, , , , ,

 

№12|2017

ENVIRONMENTAL PROTECTION

bbk 000000

UDC 504.064:628.356

Rublevskaya O. N., Probirsky M. D., Leonov L. V.

Implementation of the technologic solutions focused on the prevention of water body eutrophication (best practices of SUE «Vodokanal of St. Petersburg»)

Summary

SUE «Vodokanal of St. Petersburg» has been the biggest water user in the Baltic Sea coastal zone; therefore the enterprise is obliged to meet the regulations of effluent discharge into the water bodies. The qualitative composition of the discharged effluents is regulated not only by the Russian standards but also by the international recommendations including the Helsinki Convention on the Protection of the Marine Environment of the Baltic Sea. Russia endorsed the Convention in 1998. Since that moment Saint-Petersburg and Vodokanal have been aiming at reducing raw wastewater discharges into the Baltic Sea and meeting the regulations of the effluent quality. The best practices of SUE «Vodokanal of St. Petersburg» implementing the technology of nutrients removal with the purpose of preventing water body eutrophication are presented. The international experience was studied; the laboratory and full-scale tests of different technologies of enhanced phosphorus and nitrogen removal were conducted. Kreal technology and its limitations revealed in the process of operation are described alongside with the process schemes designed by the University of Cape Town (UCT-Process) and Johannesburg University (JHB-Process) and implemented with the purpose of improving the efficiency of wastewater treatment. In order to provide for the stable phosphorus concentration in the effluent according to the regulations chemical removal of phosphorus was introduced. Starting from 2011 Saint-Petersburg has been fully meeting the HELCOM recommendations.

Key words

, , , , , ,

 

№1|2013

WASTEWATER SLUDGE TREATMENT

bbk 000000

UDC 628.17.001.4

Lominoga O. A., Agapov D. V., Kell L. S.

Minimizing the recovery of phosphorus-containing pollutants in the process of wastewater sludge treatment

Summary

To improve the Baltic Sea basin the problem of reducing the concentration of nutrients, phosphorus in particular, in the effluents must be solved. No less important is to prevent bound phosphorus recovery in the subsequent process of activated sludge dewatering. It is shown that minimizing phosphorus recovery during sludge dewatering and preventing secondary pollution of effluents can be ensured by separate thickening of activated sludge and raw sludge; as well as by minimizing the retention time of activated sludge and raw sludge mixture before mechanical dewatering.

Kye words

, , , , ,

 

vstmag engfree 200x100 2

Banner Oct 2024

ЭТ 2024 200х200px V2

myproject msk ru

Баннер конференции г. Пятигорск

мнтк баннер

souz ingenerov 02

Aquatherm 200x200 gif ru foreign