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UDC 628.16.067.65.011.056
Pokhil Yu. N., Valuyskikh I. V., Mamaev V. V., Andriianets Petr, Andriianets Anton, Pokazaniev D. S.
Automated System of Control over Technological Process of Filtration
Summary
It is told about the stage-by-stage realization of the project of automation of the filtration process at the pumping-filtering station of the city of Novosibirsk. In the first place equipment of automated monitoring of parameters of the filtration process and equipment were introduced. The stage-by-stage introduction of the automation system on the basis of monitoring results makes it possible to optimize the process of filters washing. Owing to the correct adjustment of fittings and control elements it is possible to reduce the quantity of wash water by 18%. The second component of reducing wash water consumption is the optimization of a period of filters washing. By the parameters controlled (head loss, turbidity, capacity, position of valves during the washing) it is possible to increase the time of a filtering cycle by about 2 times which reduces water consumption for filters washing. The developed solutions of the stage-by-stage introduction of automation of control over the technological process make it possible to use them at analogous filtering facilities.
Key words
filtration cycle , automated control system , algorithm of control , automation means , hydrodynamic resistance
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UDC 628.2/.3:658.52.011.56
Regotun A. A., Daineko O. N., Smirnov Aleksandr Vladimirovich
Automated control of the treatment facilities on the basis of mathematical models
Summary
The applicability of the mathematical models in the control of wastewater treatment facilities in terms of the operational issues solutions is considered. A possible option of using the software package on the basis of ASM mathematical models in the control of the biological treatment plant with retrofitting into the control system of the entire wastewater treatment facilities is presented. The general principles of control system building with the integrated mathematical model of the biological treatment process are described. The comparative analysis of the popular advanced software simulation packages and the simulation software developed by My Project Company is sited. By the example of the standard aeration tank configuration the possible and easy integration of the software into practically any advanced SCADA-system is demonstrated. The contrary case is described: the use of the software in the highest level of the automated process control system of the wastewater biological treatment.
Key words
biological treatment , energy efficiency , mathematic modelling , automated control system , technical process , hardware and software
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UDC 628.1/.2.62-523
Pokhil Yu. N., Galkin A. N., Nikolaev A. V.
Introduction of «Vodokanal» automated control system
Summary
The experience of introducing and operating an automated system of process control of water distribution and sewage networks of Gorvodokanal of Novosibirsk MUE is presented. The unitization and upgrade of the hardware and software allowed establishing an integrated information data base, integrating silos of data and estimating the efficiency of the entire enterprise. «Vodokanal» automated control software system is a geographical information system of the municipal water and sewage networks linked with the information block of control and operational services, and consists of three blocks (control, analytical and engineering department section) and network map. The use of the software system provided for improving the speed and efficiency of data processing. According to the estimations the operational efficiency of the software users was improved by 10–15%.
Key words
water supply and sewerage networks , automated control system , operation control block , analytical block , map of networks
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UDC 628.1.3:658.52.011.56
Zubkov S. V., Galkin A. N., Nikolaev A. V., Krivtsov V. M.
Introduction of Program Complexes ASCPVodokanaland Remont-Expert at the Municipal Unitary Enterprise Gorvodokanal (MUE) of Novosibirsk
Summary
The experience in introduction and operation of the automated system of control of technological processes (ASCP) at water supply and sewerage networks as well as the maintenance of equipment of subdivisions of the Novosibirsk’s GorvodokanalMUE is expounded. Unification and renewal of technical means and software makes it possible to create a united information data base. The programs introduced make it possible to unite separated information and assess the efficiency of the enterprise operation on the whole. The Remont-Expert program accelerates significantly the process of decision-making in the course of equipment repair work. The use of the program complex ASCP Vodokanal makes it possible to reduce man-hours of the staff of the central supervisory service, technical department, water supply and sewerage services in the course of execution of analytic work of information character.
Key words
automated control system , information data base , equipment repair , water supply and sewerage network
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UDC 65.012.45:628.1/.2
Obuzdin S. Iu., Alekseev A. V., Novitskii N. N.
The concept of enterprise consolidated information area
and its approbation in «Vodokanal» MUE of Irkutsk
Summary
A brief description of approaches to IT development of the operators of public utilities pipelines is presented. The main task of developing intelligent pipeline systems is the harmonization of the requirements and capabilities of all the parties to the processes of receiving and conveying the operating medium, delivering and using the services. Herewith a consumer is assigned the part of an active full-fledged stakeholder who can influence the scope of services, their quality and price. The key objective of improving the degree of intellectuality of pipeline systems is ensuring the high level of their technologic controllability. The necessary condition of achieving the set goal is the availability of the consolidated information area as a cornerstone factor. The basic provisions of the concept of the enterprise consolidated information area are presented and the experience of its approbation in «Vodokanal» MUE of Irkutsk is described. Compared to the typical approach to the development of the management information system («top-down») that assumes data centralization within the frames of the unified information system, a flexible approach is proposed that is based on the data resource integration («bottom-up»). Herewith the information support of the decision-making processes related to the operation control is put a premium on. The acceptance of this concept by water and wastewater providers will lay the groundwork for establishing the intersystem and intraurban co-operation, integration with external structures and services (municipal administration, supervisory authorities, online resources for customer relations etc.), provide for improving the general level of controllability and concurrence of the decisions made which will result in the improvement of the efficiency and service quality.
Key words
information technologies , automated control system , enterprise consolidated information area , data centralization , integration of information resources
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UDC 621.65.62-531.3:628.1/.2
Sivolov G. E., Karmalov A. I., Ivanson P. B., Iskhakov Yu. B.
Multilevel Automated Control System of Technological Processes of Water Supply and Wastewater Disposal
Summary
The stages of creation of the multilevel automated control system of technological processes of water supply and wastewater disposal with the use of an adjustable electric drive in pumping units, microprocessor and computer hardware are considered. A brief review of principles of operation of the system’s components is done. To ensure the uninterrupted water supply and wastewater disposal JSC Seversky Vodokanal realizes the project of creation of the multilevel automated system of control over technological processes of lifting, treatment and transportation of water to consumers with subsequent wastewater disposal to the city’s treatment facilities. The implementation of the project is carried out step-by-step.
Key words
adjustable electric drive , sewerage pumping station , automated control system , power saving
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UDC 628.212.2
Variushina G. P.
Specific features of collection and treatment of industrial stormwater runoff from motor transport enterprises
Summary
The urgency of the problem of industrial stormwater runoff collection and treatment has been caused by the continuous car density growth that is a high-toxic pollution source. The task of the studies was investigation and assessment of the motor transport enterprise impact on the municipal watershed health under current conditions. The results of inspecting water utilization schemes at motor transport enterprises, bus, trolley-bus and taxi depots, truck depots, motor pools of construction equipment, road machinery and specialty vehicles are presented. Core process flows: engine, radiator and machine battery part washing, fuel tank testing, parts and assemblies washing, outside washing and painting of motor vehicles were investigated. Full-scale inspection of local intrashop wastewater treatment facilities and intrasite surface runoff facilities was carried out; laboratory analyses of raw wastewater and effluent quantitative and qualitative parameters including oil products, suspended solids, salt content, synthetic surfactants, heavy metals etc. were made. Rational technical solutions for improving the operation of industrial stormwater runoff treatment facilities with the use of mechanical, physical and chemical treatment technologies including horizontal grit chambers, settlers-oil separators, pressure filter cascade with mineral granular media and high efficient sorption materials were suggested. At that, the efficiency of treatment meets the effluent requirements for being reused as process water or discharged into the municipal storm collector and water bodies.
Key words
water supply plant , frequency converter , automated control system , public water and wastewater management , канализационная насосная станция
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UDC 628.32:65.012.45
Domnin K. V., Yeroshenko R. I., Krivosheyev V. A.
Developing information technologies at the Khabarovsk MUE «Vodocanal»
Summary
Automation and centralization of control over the facilities of Khabarovsk Vodokanal have been carried out since 1991. At present 38 sewage and 40 water pumping stations are working in fully automatic mode. At the Municipal water treatment facilities and Tungus ground water facilities the systems of process automation and visualization were introduced. An automated water quality biomonitoring system is in operation. An automated system of commercial energy accounting is being designed. The existing information systems are continuously improved with the introduction of advanced software. A most critical task for the nearest future is establishing a corporate information management system.
Key words
automated control system , geoinformation system , process control , energy accounting system , fiber-optic communication line
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UDC 628.356.14
Egorova Yu. A., Bazhenov V. I., Ustiuzhanin A. V., Rakitskii D. S., Levin D. I., Gordeev S. A., Nagornyi S. L., Petrov V. I.
Control valves in controlled pneumatic aeration processes
Summary
Through the 2013–2019 program of the Ministry of Energy and Public Utilities of the Samara Area «Samarskie Kommunal’nye Sistemy» Company has developed and has been successfully implementing the project of upgrading the municipal wastewater treatment facilities. In order to improve the energy efficiency retrofitting the systems of aeration and air distribution, equipping with compressors with controlled air supply to the aeration tanks within 45–100% range is envisaged. The general concept of control has been substantiated that includes complex level of process control and a two-loop automation scheme «aeration tank gate valve control – air blower group». The method of selecting control valves for the air supply control system for pneumatic wastewater aeration has been developed and substantiated. The method is based on the dependence of compressed media flow through the control valve stated in IEC 60534-2-1 International Standard. Under full-scale conditions with the use of precision equipment the flow characteristics of IRIS (DN300) control valve manufactured by Egger were studied. The average percentage error of the method was 6.79%. The method error does not matter much for the automated control since PID-control provides for supplying the required air amount according to the condition of compliance to О2, NH4 set values and current measurements of the supplied air amount. The classification of control valves is presented based on the type of the dependence of Kv/Kvs valve capacity coefficients from the rate of valve opening. Technological modes were identified: comparison of the theoretical and experimental flow characteristics of the control valve, pressure difference at the control valve, pressure difference in the «control valve – aerators» system, aerial environment temperature before the valve. The suggested method of the control valve calculation is a part of the «Energy efficiency of the controlled air supply to the aeration tanks» comprehensive mathematical model.
Key words
energy efficiency , automated control system , membrane aerator , wastewater treatment facilities , pneumatic aeration system , control valves , flow coefficient , diaphragm gate valve
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UDC 628.14:62-523
Ageev M. K.
Current trends in water supply optimization
(review)
Summary
The main aspects of introducing SCADA-systems for automated control of water supply and wastewater disposal processes: synchronization of software with the installed control systems; erection of a programmable logic controller, introduction of algorithms of systemic optimization, synchronization of the telemetry system and control system at the facilities are considered. The basic technical factors (e. g. when a programmable logic controller and RTU blocks have been already connected to the centralized control system; the availability of separate algorithms at RTU-block level) that shall be taken into account when making a decision on the introduction and in the process of designing automated control systems as well as the principles of SCADA system operation by a special operating department are described. By the example of the companies that have introduced SCADA-systems for water and wastewater industry an analysis of the results in terms of absolute and relative indices is given. The capacity of some pumping stations operated by EBMUD Company was improved by more than 27%. During the first week of the system operation WSSC Company registered about 400 dollars per day cost cutting just at one of the pumping stations. For the second week this amount increased to 570 dollars per day and for the third week exceeded 1000 dollars per day. Similar effect was noted at other 17 pumping stations. Thus, SCADA-systems contribute to financial advantages by optimized and improved efficient control of water supply and wastewater disposal processes. The use of the relative international experience for the project implementation in Russia has been an effective solution.
Key words
automated control system , water and wastewater management , SCADA-system , plant management , automated accounting
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UDC 628.14.62-523.8
Sopyryaev M. N., Pushchelenko V. V.
Efficiency of Technological Processes Control
Summary
The development of automated systems of control of technological processes as one of a key component of dynamic management of an enterprise depends on many factors, in particular, on goals set, determination of priorities, functional possibilities realized. The optimal structure makes it possible to use efficiently possibilities of the equipment reducing the expenditures both at the designing stage and at subsequent stages of introduction and operation. Creating such systems it is necessary to take into account the functional of cost recovery and scalability. The module principle of creation of an automated control system has been realized at the municipal enterprise Samaravodokanal of the city of Samara.
Key words
monitoring , automated control system , SCADA , centralization of control , control of aggregates conditions , control points
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