Tag:sludge scraper

№10|2011

WASTEWATER TREATMENT

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UDC 628.334.5.004.69

Pakhomov A. N., Streltsov S. A., Belov N. A., Mukhin V. A., Kouryatnikov A. A.

Upgrading primary settler

Summary

Upgrading 54 m diameter primary settler at the Kouryanovo wastewater treatment facilities in Moscow with the installation of a newly designed IL-54 sludge scraper is discussed. The specifications and advantages of the new design of the sludge scraper are described. Industrial tests of the sludge scraper complete with a floating covering section on the primary settler at the Novo-Kouryanovo wastewater treatment facilities showed high process efficiency and operating reliability. As part of the integrated program of the Novo-Kouryanovo wastewater treatment facilities upgrade it was decided to equip all the 54 m diameter settlers with IL-54 sludge scrapers and floating coverings.

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№7|2014

WASTEWATER TREATMENT

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UDC 628.31.004.69

Streltsov S. A., Belov N. A., Klimova L. A., Pshenko N. L.

Reconstruction of the Novo-Kur’ianovo wastewater treatment facilities

Summary

The Kur’ianovo wastewater treatment facilities are the European biggest municipal wastewater treatment complex. Being an advanced project for its time (1970-ies) by the XXI century the Kur’ianovo wastewater treatment facilities turned to be obsolescent and needed upgrading. In 2010 the project of upgrading the first and second blocks of the Novo-Kur’ianovo wastewater treatment facilities was launched. The specific features of the design solutions of recovering the capacity of the engineering structures of buildings and facilities of the wastewater treatment plant, of retrofitting nutrients removal process are considered alongside with the aspects of reducing malodorous emissions from the open surfaces of the facilities. Special attention in the project is paid to the selection of process equipment – advanced sludge scrapers, sludge pumps, turboblowers and aeration systems were installed. For the first time floating covers of the primary settling tanks were applied.

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№7|2010

PROBLEMS, PERSPECTIVES

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UDC 628.33.004.6

Serebryakov D. V., Tuomikoski P.

Reconstruction of Typical Radial Settling Tanks with the Use of a Scraper System Finnchain

Summary

Difficulties of the operation of radial primary and secondary settling tanks with typical equipment for sludge removal (sludge disposal trucks IBR and sludge scrapers IPR) are stated. The scraper system Finnchain (Finland) devoids these shortcomings. A principle of operation of this equipment is described; basic operation data and its distinctions from analogues are presented.

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№8|2014

WASTEWATER TREATMENT

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UDC 628.33

Kuriatnikov E. A., El' A. M.

Unique design of settling tank covers  at the Moscow wastewater treatment facilities

Summary

The problem of eliminating malodors emitted from wastewater is well known in world practice and is solved by isola­ting open surfaces at the treatment facilities from the ambient atmosphere with covers. The international experience of designing the covers for settling tanks to eliminate malodors is described. The specific features of different cover designs (domed, flat, floating), their advantages and drawbacks are considered. The design of PBI floating cover and the experience of using it on a 54 m diameter primary settler at the Liuberetskie Wastewater Treatment Facilities in Moscow are described. Floating cover for a sludge scraper basin has an original design developed by the «Moselektro» engineers which has nothing comparable in the international practice. The main advantage of PBI cover is the possibility of repairing the equipment installed inside the settling tank eliminating complete cover dismantling. PBI cover has the minimum ventilation space that provides for the significant savings because of the low power consumption of the air cleaning system. PBI covers of any diameter can be installed on the storage tanks at the treatment facilities without any modifications of the building part. The results of the process and durability tests of the sludge scraper of new design that ensures the maximum stiffness and integrity of the system are presented.

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Российская ассоциация водоснабжения и водоотведения

Конференция итог

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