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UDC 628.316.12
Rublevskaya O. N., PANKOVA G. A., Leonov L. V., Kolosov D. E.
Approbation of Glint artificial aluminosilicate sorbent for tertiary treatment of biologically treated domestic wastewater
Summary
The results of pilot tests of synthetic aluminosilicate sorbent under Glint trademark in comparison with AG-3 granulated activated carbon are presented. The study was carried out with effluent from the North Wastewater Treatment Plant of SUE «Vodokanal of St. Petersburg». The following parameters were determined in the effluent samples: рН, suspended solids concentration, phosphate as P, anionic surfactants, ions of iron, zinc, aluminium, nickel, copper and manganese. Glint sorbent is aluminosilicate granular material with effective surface and contains exchangeable ions of calcium and magnesium. Glint material proved itself in the treatment of industrial wastewater contaminated with heavy metal ions but not contaminated with organics and complexing compounds.
Key words
filtration , wastewater , aftertreatment , heavy metals , activated carbon , aluminosilicate sorbent
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UDC 628.161
Govorova Zh. M., Govorov O. B.
Water treatment facilities, units and technologies with floating polymer bed (design and introduction experience)
Summary
The principal stages of designing water treatment facilities and units with granules of expanded crushed and uncrushed polysterene with the density less than the water density used as filtering bed are presented. The theoretical concepts and distinguishing features of water clarification process in a styrofoam layer are considered. The history of water clarification process in styrofoam layers at the specific structure of the granulated layer depends primarily on the quality of incoming water, filtration rate and surface properties of the bed. The dominant parameters of the surface water quality in this case are as follows: dispersiveness and suspended matter concentration, kinetic stability of its colloid particles. During filtration of effluents after biochemical treatment in addition to the above-mentioned parameters the microbial life-sustaining activities play an important role. The process parameters of various filters with floating bed (FPZ-1, …, FPZ-6, AFPZ-4М) and bioreactors with jet vacuum ejection are quoted. The positive experience of the introduction and operation of these facilities as part of water intake and purification complexes, natural water treatment plants, underground water conditioning plants and domestic, industrial and storm wastewater tertiary treatment plants is considered. Lately the increase of anthropogenic impact on the water sources have raised the demand for carrying out process experimental studies with real water of different water purification processes including filtration in filters with floating polymer bed at large-scale pilot plants. Based on the obtained results of the studies of water purification processes the recommendations for designing a water intake and purification complex were developed and implemented during its construction.
Key words
filter , deferrization , natural and waste water , aftertreatment , floating polymer bed , clarification of low-concentrated suspensions
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DOI 10.35776/VST.2021.09.05
UDC 628.345.1
Egorova Yu. A., Stepanov S. V., Nesterenko O. I., Strelkova T. A.
Study of the chemical removal of phosphorus at the municipal wastewater treatment facilities of the Samara urban district
Summary
The parameters of the chemical removal of phosphorus from wastewater in Samara have been determined. The studies were carried out by the method of trial coagulation of raw wastewater, primary effluent and mixed liquor from the aeration tanks. It was found that at the same doses of the chemical, the enhanced removal of phosphorus occurs from the sludge mixture. While using aluminum sulfate, the removal of phosphorus phosphates was enhanced by 0.3–1.6 mg/l more than while adding Aqua-Aurat-30TM aluminum polyoxychloride, depending on the initial concentrations. The concentration of residual aluminum in the effluent while using Aqua-Aurat-30TM was on average 8% lower than while using aluminum sulfate – 0.168–0.221 mg/l versus 0.173–0.274 mg/l. Comparative results of the chemical coagulation with the use of flocculants and without them showed that additional dosing flocculant did not result in an increase in the efficiency of phosphorus removal. It was determined that to achieve above 85% treatment efficiency at a phosphorus-phosphate concentration in the mixed liquor of 3.7–5.2 mg/l, a 1.3–1.8-fold excess of aluminum sulfate was required, and at lower concentrations of 1.23– 1.87 mg/l, this efficiency was achieved only with a 3.1–5-fold excess of the chemical. The research results were used in the project of upgrading a tertiary treatment plant at the Samara wastewater treatment facilities, that provided for the chemical removal of phosphorus in addition to the enhanced process of biological removal of phosphorus. The accepted calculated dose of aluminum sulfate 10 mg/l for a commercial product will reduce the concentration of phosphates after the main stage of biological treatment from 0.53 to 0.2 mg/l.
Key words
wastewater , flocculant , sewerage treatment facilities , aftertreatment , chemical phosphorus removal , coagulants
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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 628.35
Zalyotova N. A., Zalyotov S. V.
CONTUS® modular system for wastewater treatment
Summary
CONTUS® turnkey modular system for domestic wastewater treatment operating at an industrial enterprise is described. Shipping container 1CC is used as a module. Depending on the configuration MS CONTUS® units ensure the required quality of effluent up to the level corresponding to the maximum permissible concentrations for fishery water bodies. The technology includes biological treatment with suspended and fixed microflora and a «dry» biological polishing filter. Elements of different size made of synthetic floating material are used as a media for immobilized microflora. The treatment processes and structural assemblies of the unit are protected with a patent. The industrial-scale operation of CONTUS® modular system proves its high efficiency and reliability.
Ключевые слова
wastewater , biological treatment , nitrification , aftertreatment , denitrification , immobilized microflora , «dry» filter
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UDC 628.2:69.059.7
DOI 10.35776/VST.2024.11.02
Egorova Yu. A., Nesterenko O. I., Strelkova T. A., Stepanov S. V., Markina Marianna
Basic process solutions for upgrading the municipal wastewater treatment facilities: wastewater secondary settling with tertiary treatment by filtration and chemical phosphorus removal
Summary
The process solutions introduced at the Samara Municipal Wastewater Treatment Facilities in accordance with the best available technologies are considered. In the process of the reconstruction new screens buildings were built. In the volume of the existing aeration tanks biological removal of nitrogen and phosphorus compounds following the Cape town University technology with an energy efficient system of compressed air supply, the additional chemical phosphorus removal was implemented. The secondary settling tanks were converted into the filtration settlers with floating media. A UV disinfection plant was commissioned; furthermore, cleaning of malodorous emissions from the process units was provided. The design capacity of the upgraded facilities is 640 thousand m3/day. In prospect Samarskie Kommunal’nye Sistemy, LLC, the operator, within the frames of the Program of improving the environmental efficiency, will have to take measures on improving the operation of the treatment facilities that have not been included into the upgrade project because of the lack of finance. These measures include modernization of the system of removing activated sludge from the secondary settlers and also removing from them algae during the blooming period. The need of the fastest adoption of GOST on commissioning wastewater treatment facilities is justified.
Key words
reconstruction , wastewater , best available techniques , aftertreatment , technologically regulated indicators , chemical phosphorus removal , secondary settling tanks , filters with floating media
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DOI 10.35776/MNP.2020.03.06
UDC 628.358
Strelkov A. K., Egorova Yu. A., Stepanov S. V., Levin D. I., Doubman I. S., Nikolaev Aleksei
Project for the reconstruction of the tertiary treatment plant
at the wastewater treatment facilities of the city of Samara
Summary
Design solutions implemented by «Samarskie Kommunal’nye Sistemy» LLC on the reconstruction of the tertiary treatment plant of the Samara wastewater treatment facilities were considered and analyzed. The project provides for the chemical removal of phosphorus in addition to biological dephosphotation and filtration of effluents after biological treatment. The chemical phosphorus removal unit has been constructed as a building with a packaged plant inside for the preparation and dosing of aluminum sulfate solution; this layout provides for reducing the heating and ventilation costs of the chemical treatment facilities. The chemical agent is added at twelve points in the sludge mixture flow at the outlet of each aeration tank. The calculated concentration of phosphorus as phosphate in the effluent is 0.2 mg/l; the annual consumption of marketable coagulant is 1545 tons; the purchase unit cost is 0.15 rubles/m3. Tertiary treatment by filtration has been ensured by the reconstruction of eight circular settling tanks with a diameter of 54 m into settler-filters with floating media. Herewith, no construction of new buildings and utilities is required. The calculated concentration of suspended solids in the effluent is 4 mg/l, BODfull – 3 mg l. The specific energy consumption for the operation of filters with floating media is
0.57 Wh/m3, the cost of electricity – 0.0022 rubles/m3.
Key words
wastewater , sewerage treatment facilities , aftertreatment , chemical phosphorus removal , filter with floating media
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UDC 628.35
Esin M. A., Smirnov Aleksandr Vladimirovich, Sokolov A. N.
Commissioning – the key stage of putting treatment facilities into operation
Summary
The issues related to the commissioning of the equipment and wastewater treatment facilities are considered. A brief review of the history of commissioning the facilities in the Soviet Union and in present day Russia is given. The problem areas of adjusting every equipment assembly, the algorithm of work performance and the required results are shown. The attainment of sustainable performance is provided by quality and skilled commissioning. Correct visual evaluation of the equipment state carried out during the acceptance for commissioning procedure is very important. Nonobserved defects and faults in the process line will cause fast assembly fail which can result in an accident. The principles of «My Project» Company activities related to commissioning are presented. Special attention is paid to adjusting biological treatment in aeration tanks: from the front end engineering to the routine maintenance of the assembly.
Key words
wastewater , biological treatment , mechanical treatment , aftertreatment , facilities reconstruction , commissioning , erection supervision
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UDC 628.35
Iavtushenko Marina, Tarasova O. V., Rouzayev V. I., Belyaeva S. D., Bibyaev A. V., Belyaev M. A.
Commissioning the upgraded biological treatment plant at the Podolsk wastewater treatment facilities
Summary
The results of commissioning the upgraded biological treatment plant at the Podolsk wastewater treatment facilities are presented. The start up of the basic equipment, mixers and recycle pumps installed in anaerobic and anoxic zones; the secondary settler equipment; the new Korean NEUROS NХ-300 air blowers was carried out. The tertiary treatment unit washing regime during commissioning was defined. Commissioning of the UV-disinfection plant was carried out. The operational parameters of the treatment facilities were monitored by the automatic analyzers and sensors data; the laboratory control was carried out as well. Exceeding the incoming wastewater flow compared to the design value was noted; exceeding suspended solids and phosphate concentrations in the incoming wastewater was registered. However, despite the excess of the incoming wastewater flow and increased concentration of pollutants, the treatment facilities ensure advanced elimination of organic matter and nutrients.
Key words
disinfection , reconstruction , wastewater , dephosphatization , aftertreatment , biological treatment plant , nitri-denitrification , in-process control , active sludge dosage , dissolved oxygen
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DOI 10.35776/VST.2021.05.04
UDC 628.35:661.5
Kondrashev Viacheslav, Metelitsa Sergei
Stages of launching a biological treatment plant at the wastewater treatment facilities with dosing easily oxidable organic matter
Summary
Issues related to commissioning a biological treatment plant at the facilities for household and similar in composition wastewater treatment during the trial start of the treatment facilities are considered. The stages of commissioning a biological treatment plant at the wastewater treatment facilities with «inoculating» activated sludge from the operating biological treatment facilities and with dosing easily oxidable organic matter are considered in detail. The equipment configuration of the WWTP-9 produced by Germes Group is described. All stages of the biological treatment plant commissioning are considered through the example of the start-up of WWTP-9 with the use of numerous experimental data. The periods of biological treatment plant commissioning stages have been determined. The problems of adjusting the biological treatment plant and the ways of their elimination to achieve the required result are presented. The technology used at the WWT facilities provides for the effluent quality that meets the requirements for the discharge into a water body of commercial fishing importance.
чения.
Key words
wastewater , biological treatment , mechanical treatment , aftertreatment , commissioning , biological treatment plant
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