bbk 000000
UDC 628.161.3.001.891.53
Strelkov A. K., Egorova Yu. A., Bykova P. G.
Selection of most efficient chemicals for water treatment
Summary
The Saratovskoe water reservoir has been the main water source of the Samara public water supply. The municipal water treatment facilities have been built after typical projects and designed for clarification and disinfection of moderately polluted water. Lately sharp suspended solids reduction and organic pollution increase (mainly of natural origin) in the water source have been observed. During flood periods technogenic pollution (surfactants) is present, the concentration of manganese increases, phenol is found. At low water temperature, high color and permanganate value higher doses of chlorine and coagulant are required. Coagulation at low temperatures is inhibited which results in the concentration of residual aluminium and permanganate value exceeding the maximum permissible levels. Higher chlorine dosages cause higher concentrations of chloroorganics in water. Therefore a chemical for using during flood periods that will provide for the required quality of water shall be selected. The results of the laboratory studies of selecting the chemical type and optimum dosage for water purification from the Saratovskoe water reservoir during flood periods are presented. Eighteen coagulant trademarks manufactured by domestic and foreign producers were investigated. The optimum dosages of coagulant and flocculant were defined. From the coagulant samples presented two were selected that could provide for the maximum drinking water clarification at minimum levels of residual aluminium and permanganate value. The final choice can be made on the basis of the technical and economic calculations taking into account the chemical price, delivery cost and required water quality.
Key words
turbidity , sedimentation tank , chromaticity , coagulant , flocculant , filtration , water treatment , residual aluminium , permanganate oxidizability
|
bbk 000000
UDC 628.353
Chesalov S. M., Lion Iu. A., Ptitsyn V. V., Malozemov A. V.
Gabion filtration facilities for surface runoff treatment
Summary
The design and characteristics of gabion filtration treatment facilities developed and designed by the specialists of «ECOLANDSHAFT-XXI century» NPO LLC are presented. The analysis of wastewater and effluent samples collected at different seasons of the year from the inlet and outlet of the different gabion facilities showed that the efficiency of treatment both in terms of suspended solids and oil products and COD, BOD5 met the maximum permissible pollutant concentrations set for fishery waters. Gabion facilities are open gravity facilities, which do not require any chemicals, pumps, electricity or premises for their operation. They include two sections, each of them having four treatment stages: accumulating settling tank; filtration chamber with granular bed; bioplato; filtration chamber with sorbent. Gabion facilities include bioplato as a mandatory and very important element for treatment which is a shallow impoundment seeded with macrophytes and which ensures removing a number of pollutants. Due to the use of gabions, bioplato and chemical free treatment the gabion facilities can be qualified as nature like facilities which can be retrofitted into the landscape and have an attractive look becoming a part of the landscape. By now more than 120 gabion filtration treatment facilities with up to 15 years service time have been designed and built. The facilities provide for the treatment of surface runoff from highways, industrial sites of technology and industrial parks.
Key words
sedimentation tank , suspended substances , surface runoff , gabion filtration treatment facilities , petrol products , BOD5 , COD , filter with granular bed , bioplato , sorbent
|
bbk 000000
UDC 628.169
Ryltseva Yu. A., Butko D. A.
Study of the quality of supernatant separated in the process of sludge thickening at the water treatment plant in Rostov-on-Don
Summary
The results of studying the qualitative and quantitative composition of supernatant separated from the sludge after sedimentation tanks washing at the water treatment plant in Rostov-on-Don. The chemical water analysis carried out in accordance with Standard Methods showed that the given effluent type does not meet the requirements set to the discharge into the municipal sewer and poses a threat to the environment. In connection with this the technology of wash water reuse was chosen as the most efficient under the given conditions. It provides for the effluent returning into the mainstream of the water to be treated or using it for the water plant needs. At that the effluent organoleptic properties shall be considered: at 5 hours sedimentation of sludge with 5–40 g/dm3 concentration it can be classified as low-turbid, medium or high colored (depending on the season of sludge generation in the sedimentation tanks). Increasing the time of supernatant retention above the sludge (up to 120 hours) insignificantly improves the clarification and decoloration efficiency that is indicative of the presence of highly dispersive and dissolved substances highly resistive to sedimentation in supernatant. Improving significantly the supernatant quality is possible by sludge pre-conditioning with lime or cationic polyacrylamides.
Key words
sedimentation tank , filter washings reuse , slime water , sludge thickening , supernatant
|
bbk 000000
UDC 628.35:661.5
Nikolaev Yu. A., KOZLOV M. N., Gavrilin A. M., Kevbrina M. V., Pimenov N. V., Dorofeev A. G., Agarev Anton, Kallistova A. Iu.
Innovative energy efficient and resource-saving technology of removing ammonium from wastewater under anaerobic-anoxic conditions
Summary
The specialists of «Mosvodokanal» JSC have developed the technologies of ammonium oxidation under anoxic conditions: double-reactor for low temperatures and single-reactor for 30–37 °С. The technology for the operation at 10–25 °С is performed by bacteria (discovered in «Mosvodokanal» JSC) Сandidatus Аnammoxomicrobium moscowii, fixed to the bed. The rate of nitrogen removal is 50 g/(m3·day) of the reactor. The technology for warm wastewater treatment is performed by new bacteria Сandidatus Jettenia moscovienalis, fixed to the bed; the rate of nitrogen removal is 0.47 kg/(m3·day). The use of continuous flow and fixed feed increases the output of the reactor to 0.8 kg/(m3·day). Considering the high economic attractiveness and efficiency of the technology it could be expected that in the very near future the technology will become a frequent practice in wastewater treatment. For the development of the industrial-scale technology a grant was awarded within the frames of the Federal special-purpose program «Research and development for the priority orientations of the development of the scientific and technology sector in Russia for 2014–2020». The work is carried out in cooperation with Federal Research Centre «Fundamentals of Biotechnology» of the Russian Academy of Sciences in Vinogradskii Institute of Microbiology business unit. A pilot plant with a 20 m3 reactor has been assembled, commissioned and operated at the Liuberetskie wastewater treatment facilities in Moscow of a treatment capacity of 20 m3/day of dewatering centrifuges filtrate.
Key words
sedimentation tank , wastewater , surplus active silt , sludge , Anammox , ammonium oxidation
|
bbk 000000
UDC 628:339
Korziukov N. I., Zviagin G. K., Os'kin D. V.
WAMGROUP® Company – 10 years in Russia
Summary
WAMGROUP® Italian Company has been among world leaders in developing and manufacturing equipment for mechanical treatment of wastewater. The specialists of the company offer a number of innovative solutions that meet the specific demands of the companies designing water wastewater treatment facilities. The information on the implemented project of wastewater treatment facilities in Bokino village of the Tambov Region in the Tambov Area with the use of GCP mechanized screw screens is presented. The process line consists of several wastewater treatment stages including mechanical (removal of coarse litter and sand), biological (removal of organics and nutrients), and several stages of tertiary treatment, sedimentation and filtration. At the final stage of the process line the effluent is UV disinfected and discharged into the Tsna River. Commissioning the newly built wastewater treatment facilities provided for improving the living conditions for the residents, the ecological state of the Tsna River which is the main waterway in the Tambov Area, and the safety and quality of the beaches in the city of Tambov.
Key words
sedimentation tank , wastewater , nitrification , aeration tank , sewerage treatment facilities , screw mechanized screen , gravity grit chamber
|
bbk 000000
UDC 628.33.001.2
Simulation and Calculation of Sedimentation Tanks
Summary
Results of the study of processes of water treatment for suspended substances are presented. In the course of calculation of facilities and apparatuses used for extraction of the suspended phase of contamination, it’s necessary to take into account its disperse composition, density, concentration, surface properties of the liquid phase and the indicator of flows dynamics.
Key words:
sedimentation tank , suspended substances , kinetics , filtrate , diffusion , Agglomeration
|
bbk 000000
UDC 628.16.066.7
Volftrub L. I., Yegorov V. F., Staroselets L. N., Panicheva S. A., Lashmanova E. O., Yunok S. A., Moulikov R.
Upgrading flocculation tanks, settling tanks and clarifiers at the water treatment plants
Summary
The methods of improving the design of flocculation tanks, settling tanks and clarifiers with floc blanket based on the use of thin-layer – recirculating flocculation and thin-layer precipitation processes are presented. When employed in new construction the footprint of the facilities is reduced 2–3 times; whereas during the upgrade of the existing facilities their capacity increases together with water quality improvement and reduction of chemical consumption. The design of thin-layer self-cleaning modules manufactured in bulk in the form of polyethylene honeycomb blocks of polyethylene film more than 250–300 μm thick is presented. The positive long-term experience of operating the upgraded facilities located at the public, industrial and power water plants that are purifying natural water of different quality and using different treatment technologies was consolidated.
Key words
sedimentation tank , flocculation chamber , recirculator , water treatment plant , clarifier , thin-layer module of honeycomb blocks
|
bbk 000000
UDC 628.32.004.69
Bagaev Iurii, Veshkurtsev V. M., Gundyreva Tat’iana, Khutornyuk G. N.
Modernization of Sewerage Treatment Facilities
Summary
The basic technical decisions and a description of the new equipment introduced at sewerage treatment facilities of the city of Novosibirsk are presented. It is told about the methods used when repairing pipelines and capacitive facilities. Modernization is carried out at all stages of treatment: at the main pumping station, mechanical and biological treatment facilities, sludge treatment facilities. Measures carried out make it possible to improve the quality of wastewater treatment, to reduce the discharge of polluting substances into the Ob. Modernization of the operating treatment facilities owing to the use of up-to-date equipment made it possible to improve the reliability of operation of the complex as a whole, to reduce the volume of sludge intended to further utilization, to reduce the negative influence on the environment and improve the city ecology.
Key words
sedimentation tank , modernization , intensification , centrifuge , filter-press , sewerage treatment facilities , grate , grit chamber , methane tank , sludge dewatering , thickener
|
DOI 000000
UDC 628.16
Ulchenko V. M., Tat’ianko Nataliia, Glinka Nikolai
Common problems at water treatment facilities and ways to address them
Summary
Due to the anthropogenic factors, the quality of surface water is subject to rapid, mainly negative, changes; therefore, water treatment plants not always can meet the standards of the drinking water quality. Currently, many water treatment facilities are in need of upgrade, re-technologization and even reconstruction. In addition, significant changes in the actual water supply by the water facilities (decreasing, as a rule) do not always produce a positive effect on the technical and economic indicators of the water treatment facilities. Problems arising during the operation of the water treatment facilities at all stages of surface water purification – microfiltration, chemical treatment, mixing with chemicals and flocculation, sedimentation, filtration and wash water treatment are summarized. The methods used by MY PROJECT JSC in its projects to address such problems as the lack of the treatment efficacy, overspending of chemicals, short filter cycle, large water losses for process needs, discharge of untreated wash water, high purification cost are considered.
Key words
sedimentation tank , microfiltration , rapid filter , mechanical mixing chamber , flocculation chamber , zeolites , reconstruction of water treatment facilities , dolomite
|
bbk 000000
UDC 628.336.57:628.162.52
Butko D. A., Lysov V. A.
Determination of Rheological Properties of Water Supply Sediments in Facilities Directly
Summary
Design of an instrument and a method of calculation for the determination of rhelogical properties of sediments directly in settling facilities are presented. Regularities of the change of sediment resistance to displacement depending on the depth of its position and distance from the beginning of a settling tank are revealed.
Key words
treatment facilities , sedimentation tank , sludge , resistance of sediment to displacement
|
bbk 000000
UDC 628.162.15
Skolubovich Iurii, Voytov E. L., Karmalov A. I., Skolubovich Yu. L.
Treatment and Utilization of Wash Water of High-Rate Filters of Deferrization Stations
Summary
Issues of the intensification of coagulation treatment processes of wash water of the deferrization station’s high-rate filters are considered. Shortcomings of the existing flow chart of treatment and the reuse of wash water of filtration stations are exposed. The scheme of the unit and results of experimental studies for selection of an efficient reagent, treatment and utilization of filters’ wash water are presented. A new technology of reagent clarification and multiple use of deferrization station’s wash water is offered.
Key words
clarification , sedimentation tank , utilization , deferrization , coagulation , rapid filter , wash water
|
bbk 000000
UDC 628.35: 661.5.63
Ospanov K. T., Elzhasov A. A.
Sewerage Treatment Facilities of the City of Astana (Kazakhstan)
Summary
The flow chart of biological treatment of municipal wastewater making it possible to increase the efficiency of removal of phosphorous compounds equally with the efficient removal of nitrogen compounds is offered. Advantage of this technology is possibility of reconstruction and modernization of operating treatment facilities with the maximum use of existing capacities. The technique of nitri-denitrification with a dephosphatation chamber is used at the operating facilities of the city of Astana. Zeolite of the Chankanayskoye deposit is used as a media. Zeolite intensifies the processes of advanced biological treatment of wastewater both for organic pollutants and biogenic elements.
Key words
sedimentation tank , suspended substances , wastewater , biological treatment , nitrogen , phosphorous , aeration tank
|
bbk 000000
UDC 628.161
Domnin K. V., Arkhipova Elena, Dounayevskaya E. V., Aleshko D. S., Metelitsa Ekaterina
The use of advanced technologies at the Head water treatment facilities of the Khabarovsk water supply system
Summary
A project of constructing the second stage of the Head water treatment facilities of the Khabarovsk water supply system was developed. The project was designed with an account of the specific composition of the water source pollution and with the use of advanced water treatment technologies. The water treatment complex will include the following facilities: settlers and filters, powdered activated carbon addition and ammoniation stages, an upgraded pumping station at the outlet of the treatment facilities with UV-disinfection stage, an advanced bacteriological laboratory.
Key words
sedimentation tank , computerization , control of water quality , chemical workshop , water treatment facilities , biomonitoring
|
bbk 000000
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.
Key words
sedimentation tank , aeration , wastewater treatment , sludge disposal truck , sludge scraper , nitrification-denitrification , dephosphatization , aeration tank , acidoficator , malodorous emissions removal , floating cover
|
DOI 000000
UDC 628.161.3:628.169
Karmalov A. I., Naimanov A. Ia., Martynenko Grigorii, Naimanova Asiiat
Reconstruction of the facilities for reusing wash water
from de-ironing plant filters
Summary
The object of the study is wash water from multi-layer rapid filters of a deironing plant and flocculant solution used for the wash water treatment. The purpose of the work is developing an optimal process flow scheme for the treatment of wash water for the subsequent reconstruction of the facilities for wash water treatment at the deironing plant in Tomsk. In the course of work, experimental studies were carried out of the interaction of the wash water generated after washing the rapid filters of the artesian water deironing plant in Tomsk with flocculant solution of various concentrations. As a result of the study, the optimal process flow scheme for the wash water treatment was selected; the dose of the flocculant solution was 0.3 g/m3 and the concentration of the flocculant solution was 0.05%. The extent of adoption was as follows: the results of the work were used in the reconstruction project of the wash water treatment facilities at the de-ironing plant in Tomsk. The data on the flocculant dose and concentration of the flocculant solution will be used in the operation of the facilities after the reconstruction. The effectiveness of the flocculant solution is determined by the degree of water clarification visually and in a lab environment by determining the concentration of iron oxide in clarified water. The economic efficiency of the selected process flow scheme is due to the return of 7200 m3/day of water for reuse saving more than 7% of the daily costs for water abstraction.
Key words
settling , sedimentation tank , deferrization , sludge , flocculant , wash water treatment , повторное использование
|
bbk 000000
УДК 628.32/.336
Zhurba M. S., Fomin I. I., Levchenko O. V.
Development of high-technology wastewater treatment facilities on the basis of «Ecopolymer» equipment
Summary
«Ecopolymer» Manufacturing Company LLC has lately expanded both the production capacities and production portfolio. The Company is aiming at producing not just separate product types but complexes designed for complete cycle of process operations. The Company production program is presented. The designs of a belt filter-press, rack screens for fine treatment, a screw conveyor and a screw press for screenings, and a sludge pump are described. The basic specifications and advantages of the equipment manufactured by «Ecopolymer» Manufacturing Company LLC are summarized. The development and manufacture by the «Ecopolymer» production department of the control cabinets for the automation of the operation of the entire treatment facilities or their separate units has become a solid step in the control of the treatment facilities as a whole. The long-term Company’s experience provides for offering the customers ready-made solutions of the manufactured equipment layout with the visualization of the layout and harmonization of all the automated control systems for the equipment included into the complex.
Key words
sedimentation tank , sludge disposal truck , filter-press , manufacturing facilities , sludge mechanical dewatering , screw conveyor , mechanical screens
|
|
