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UDC 628.3.004.69
Modernization and Reconstruction of Sewage Treatment Facilities of the Municipal Unitary Enterprise Vodokanalof the City-Resort of Anapa
Summary
Features of the wastewater treatment in resort towns are described. The ways of enhancement of operation efficiency of sewage treatment facilities of the MUE Vodokanal of the city-resort of Anapa are considered. A brief characteristic of two variants of modernization of treatment facilities are presented. The first variant stipulating the partial replacement of equipment makes it possible to reduce expenditure and enhance efficiency of wastewater treatment at the most unsatisfactory operating parts of the flow chart. The second variant demands significant capital investments, changes in the flow chart and replacement of equipment, but at the same time economic efficiency and the required quality of wastewater treatment according to all the indicators are achieved.
Key words
disinfection , treatment facilities , biological treatment , sewerage , nitri-denitrification , flow chart , aftertreatment
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UDC 628.312.004.69
Petrushin I. N., Kobiakova N. V., Rouzayev V. I., Belyaeva S. D., Kuznetsov D. A., Sedykh T. N., Androsova E. I.
Upgrading the wastewater treatment facilities of the Istra city and Istra Area
Summary
The necessity for the reconstruction of the wastewater treatment facilities of the Istra city and minor wastewater treatment facilities operated by MUE «Istrinskii Vodokanal» of the Istra Area was stipulated by stringent requirements to the effluent quality that were not possible to meet at the existing facilities, and also by the actual wastewater flow increase and equipment wear. The reconstruction provides for the introduction of modern equipment and advanced technologies of wastewater treatment and sludge handling while making maximal use of the existing buildings and facilities. The maximum amount of work was carried out during reconstructing biological treatment line of the Istra wastewater treatment facilities. The project includes allocating nitrification-denitrification zones in the aeration tank and replacing the outdated aeration system with a system with disk fine-bubble membrane aerators. To improve the operation efficiency of the biological treatment facilities and reduce power consumption advanced air blowers were installed. Tertiary treatment facilities were upgraded; drum screens were replaced with microscreen filters. To solve the problem of sludge utilization the composting technology is being developed. Booster pumping stations were upgraded with installing power-operated grinding screens. The project of upgrading wastewater treatment facilities of Dedovsk town (20,000 m3/day) and Obushkovo village was designed. In 2008 the reconstruction of the wastewater treatment facilities of Snegiri holiday home was completed. The design of the biological treatment facilities making use of the biolfilter building and two sections of percolating biofilters proved to be an interesting engineering solution. At present the step-by-step reconstruction with capacity increase of the wastewater treatment facilities in Pavlovskoe and Onufrievo settlements, and Rozhdestveno village is underway. The entire project is implemented by the specialists of the Istra Vodokanal in cooperation with BIFAR Scientific-Production Firm that has developed the basic process solutions and design documentation.
Key words
treatment facilities , reconstruction , wastewater , biological treatment , nitri-denitrification , aftertreatment , membrane aerator , adjustable air blower , microscreen filter , grinding screen
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UDC 628.3
Romashko A. V.
The experience of implementing comprehensive solutions in industrial wastewater treatment
Summary
The practical experience of the implementation of local treatment facilities of industrial enterprises on a turnkey basis: dairy plants, poultry farms, enterprises for the production of soft drinks, chemical industries, etc. is summarized. The differences in the implemented schemes of local wastewater treatment in different industries are described, process indicators of the operation of the treatment facilities are presented. The use of mathematical modeling of biological treatment facilities (classical scheme, membrane bioreactor, etc.) provides for a high degree of convergence of the calculated design values and indicators obtained during commissioning. The automation system developed by the Russian engineers provides for arranging the unattended operation of the treatment facilities, improving the reliability of the facilities, and reducing the operating and maintenance costs. MY DAF, MY MBR and MY BION comprehensive solutions used in the implementation of the treatment facilities from design to commissioning, guarantee the achievement of the required effluent quality before discharging into a municipal sewer or a water body. 30 years of experience of MY PROJECT JSC in the implementation of integrated projects of wastewater treatment facilities gives a guarantee of successful implementation of projects in the future.
Key words
nitri-denitrification , membrane bioreactor , industrial wastewater treatment , comprehensive process solutions , chemical pressure flotation
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UDC 628.31.004.69
Rublevskaya O. N., Probirsky M. D., Lysova Tat’iana, Malysheva V. V.
The experience of the North wastewater treatment plant development and upgrade
Summary
The 25-year experience of operating and developing the North wastewater treatment plant in Saint-Petersburg is described. The stages of upgrading the wastewater treatment plant are presented: the first stage – complying with the Helsinki Recommendations on Baltic Marine Environment Protection (HELCOM) with regard to elimination of nutrients (nitrogen and phosphorus) from wastewater; the second stage – step-by-step 100% treatment of municipal wastewater from the combined sewage system by 2015 to comply with the HELCOM regulatory guidelines; the third stage – reduction of the volume and utilization of wastewater sludge. The improvement of the wastewater treatment plant provided for the upgrade of the facilities and equipment for wastewater mechanical treatment, sludge disposal, pretreatment of sludge mix before dewatering and other measures.
Key words
wastewater , nitri-denitrification , aeration tank , grate , grit chamber , sludge incineration , air blower , chemical phosphorus removal
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UDC 628.35:661.5.63
Trunov P. V., Lunin S. V., Chuev E. V., Pavlova V. Yu.
Enhancement of Efficiency of Biological Removal of Nitrogen and Phosphorus Compounds at Sewerage Treatment Facilities
Summary
The technology of wastewater treatment for biogenic elements using the processes of nitri-denitrification and dephosphatization on the basis of up-to-date sewerage treatment facilities is described. The principle of computer simulation with the help of the program complex BioWin is the basis of technical decisions. The aim of this calculation is to achieve reliable results which can be used in practice. The main advantages of introduction of high effective, ecologically safe technologies of waste water treatment using the equipment manufactured by the scientific and production firm Ekoton are described. Stages of the main works made by the engineering department of the company which can become a base for the beginning of design preliminary studies and receiving of necessary investments are considered.
Key words
biological treatment , nitrogen , phosphorous , nitri-denitrification , dephosphatization , simulation of treatment processes , Optimizing calculation
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UDC 628.35:661.5
Esin M. A., Smirnov Aleksandr Vladimirovich
Advanced methods of designing biological treatment facilities
Summary
The data of the analytical reviews and practical results of calculating and designing advanced wastewater treatment facilities are presented. The analysis of the methods of designing biological wastewater treatment facilities (construction rules and regulations SNiP, ATV) and the software for mathematical simulation of the facilities operation («EcoSim», GPS-X etc.) is made together with the hydrodynamic continuum mechanics software as applied to calculating the flow conditions at the treatment facilities. The mathematical model of biological wastewater treatment process is based on the analysis of the relationships of enzyme kinetics of the wastewater pollutant transformation and makes a connection between the parameters of the raw waste and effluent, dissolved oxygen concentration and activated sludge. The principles of designing and calculating the facilities for biological treatment of municipal and industrial wastewater including the use of nitri-denitrification and biological phosphorus removal processes have been developed. The practical experience of using the mentioned methods in front end and design works.
Key words
biological treatment , nitri-denitrification , mathematic modelling , energy efficiency of equipment , wastewater composition , biological phosphorus removal
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UDC 628.35:661.5
Lominoga O. A., Agapov D. V., Bol'shakov N. Yu.
The technology of biological wastewater treatment with nitrification-denitrification at the Zelenogorsk wastewater treatment facilities
Summary
The results of introducing the technology of biological wastewater treatment with the use of nitrification-denitrification processes in the «aeration tank-secondary settling tank» system at the Zelenogorsk wastewater treatment facilities are presented. It is shown that the use of nitrification-denitrification enhance significantly the efficiency of nitrogen removal. The findings allow recommending the suggested technical solution for the introduction at other municipal wastewater treatment facilities.
Key words
aeration , nitrification , nitri-denitrification , aeration tank , ammonia nitrogen , denitrification , organic substances , nitrate nitrogen , total nitrogen
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