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UDC 628.1:3
Meshengisser Yu. M.
The EcopolymerGroup of Companies: 20 Years of Serving Ecology
Summary
Manufacturing enterprises forming a part of the EcopolymerGroup produce a wide range of different products for water supply and water disposal systems: aerators, drains, shield valves, fine treatment screens, belt filter-presses. The firm has been developed the conception of treatment facilities retechnologization making it possible to reduce the anthropogenic load on the natural environment and payment for discharge of contaminants. Retechnologization has been introduced at more than 20 Vodokanals. The concept of management of construction and reconstruction of water supply-sewerage services objects realized in different countries has also been developed. Now the company masters up-to-date methods of treatment of high-concentrated industrial wastewater, develops new types of equipment.
Key words
water supply-sewerage services , retechnologization , aerators , drains , shield valves , fine treatment screens , belt press filters
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UDC 628.17.001.4
Shchetinin A. I., Esin M. A., Malbiev B. Yu., Regotun A. A.
Simulation of Biochemical Processes of Wastewater Treatment as a Basis of WWTFs Retechnologization
Summary
In accordance with the requirements of environmental legislation it is necessary to introduce the best available technologies at biological WWTFs. In the course of development of plans of reconstruction and capital repair of sewerage treatment facilities it is necessary to carry out the variant examination of flow charts of treatment on the basis of imitation simulation. A detailed analysis and comparison of different models of processes with activated sludge have been conducted. Treatment processes at large number of facilities have been simulated with the help of the Ecosim 3P program developed by the Ecopolymer Company. It is shown that the imitation simulation makes it possible to ensure a high accuracy of treatment results prediction. An approach to the retechnologization of treatment facilities based on mathematical models of biochemical processes with activated sludge has been developed. This approach tested experimentally at a whole number of biological treatment stations has made it possible to carry out their retechnologization resulted in considerable reduction of biogenic elements in treated water.
Key words
biological treatment , removal of nitrogen and phosphorus , best available techniques , retechnologization , mathematic modelling
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UDC 628.356.001.57
Meshengisser Yu. M., Shchetinin A. I., Esin M. A., Regotun A. A.
The experience of retechnologizing the existing wastewater biological treatment facilities
Summary
Retechnologization is an efficient advanced method of upgrading wastewater treatment facilities that has been successfully used by Ecopolymer Group for 10 years. Upon the completion of retechnologization of a number of wastewater treatment facilities with nutrient removal good quality of effluent at minimum construction works was achieved. The most perspective technology of removing nutrients from wastewater is multistage nitri-denitrification with the use of А/О- and А2/О-process flow schemes. Any type of aeration tank: two-, three- and four line facilities, complete-mix activated sludge systems, plug flow systems can be subject to retechnologization. Specific reconstruction design is determined with the help of mathematic modeling. Retechnologization of the wastewater treatment facilities has been carried out in more than twenty water and wastewater companies (Vodokanals).
Key words
biological treatment , removal of nitrogen and phosphorus , aeration tank , retechnologization
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UDC 628.161.004.6
Meshengisser Yu. M., Ulchenko V. M.
Retechnologization and Reconstruction of Water Treatment Systems
Summary
Basic propositions of the concept of water treatment systems retechnologization and its distinctions from retechnologization of wastewater treatment facilities are stated. Recently in the course of reconstruction of water supply facilities growing attention is paid to ecological aspects of their operation and such reconstruction is practically impossible without retechnologization. The process of retechnologization of water treatment and treatment of sediment of natural high- colored and slightly turbid water is described on the example of the State Unitary Enterprise PO Sevmash in the city of Severodvinsk of the Arkhangelsk Region. In the city of Sharya the EcopolymerGroup has executed the retechnologization of the water supply station with the aim to increase the capacity of operating facilities. The reconstruction of water supply treatment facilities in the city of Kovel (Ukraine) has made it possible to reduce iron content in potable water and improve operation characteristics of the facilities.
Key words
potable water , turbidity , reconstruction , deferrization , chromaticity , retechnologization , drains , aluminium salts , thin layer sedimentation , clarifiers with suspended sediment , rapid filters
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УДК 628.315.1: 628.355: 676.2
Shchetinin A. I., Kostin Yu. V., Andreev E. L., Esin M. A., Malbiev B. Yu., Demyanenko E. V., Yurchenko V. A.
Syktyvkar Timber Processing Complex: Solving of Wastewater Treatment Problems
Summary
Peculiarities of the wastewater treatment process of the Syktyvkar timber processing complex typical for pulp and paper industry are described. Data on studies of the problem of activated sludge swelling are presented. It is proposed to solve this problem using the aerobic selector. On the basis of simulation results the scheme of reconstruction of preaerators of inlet flows into an aeration tank is proposed; according to this scheme the wastewater mix and return activated sludge are supplied to the first tunnels of preaerators operating as a selector of bacteria. The article presents a flow chart of wastewater and sludge treatment for retechnologization of existing facilities consisting of the following stages: treatment of wastewater at fine treatment mechanical grates and aerated sand catchers; degassing of wastewater before primary sedimentation tanks; installation of belt filter presses for treatment of excess activated sludge; installation of equipment for additional dewatering of primary sludge and excess activated sludge up to 50% of moisture content; disinfection of wastewater.
Key words
wastewater , sludge index , retechnologization , aerator , pulp and paper industry , aerobic selector
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UDC 628.1:3:65.012
Meshengisser Yu. M., Shchetinin A. I.
Management of Process of Construction and Reconstruction of Water Supply-Sewerage Services Objects
Summary
The article states basic principles of the EcopolymerGroup’s concept of management of the process of construction and reconstruction of water supply and water disposal objects and also features of designs of treatment facilities requiring the essentially new managerial approach. Examples of reconstruction and retechnologization of treatment facilities of Novocheboksarsk, Gorodets and Aznakaevo cities are presented. Mandatory requirements for the companies working in accordance with the Ecopolymer concept are expounded. The main thesis when working with a customer is a partnership based on trust. The EcopolymerCroup of Companies being a general designer, contractor, equipment manufacturer and supplier simultaneously assumes the responsibility for results of realization of construction and reconstruction.
Key words
reconstruction , water supply , management , water disposal , retechnologization , ecology , construction
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