Experimental Process Identification for Industrial Water De-carbonization in Power Plants

Water Treatment Plant (or WTP) is the most important part of the Power Plant, because it produces vital-water it needs for steam production. Power Plants are the biggest air, ground and groundwater pollutants. Bad water quality directly impacts machine duration. Polluted water from Water Treatment Plant has a negative effect on people, flora and fauna, thus better waste management programs should be put in place to eliminate this problem. In this paper we are going to present the de-carbonization process of raw water as a part of water treatment plant, within coal fired power plants. De-carbonizing water is a time consuming process. We are going to present an advanced method for process identification with big time delay. The results are compared and one of the most appropriate methods is selected as identification method for this process. Further research and possibilities in this area are going to be presented by the end of the paper.Progress in identifying the process by which we work in this paper may serve as a new way to identify highly nonlinear processes. The used algorithm for identification of the process that is outlined in this paper can be applied, and it will be the basis for the creation of the software for the application of microcomputer techniques. Here we are applying the relevant software which can be applied in the form of programming packages for identification. This has to do with passive identification methods.

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Industrial experiment on electrodialized separation of highly concentrated multicomponent technological solutions at thermal power plants

E3S Web of Conferences ◽

10.1051/e3sconf/201912401029 ◽

2019 ◽

Vol 124 ◽

pp. 01029

Author(s):

A. A. Filimonova ◽

N. D. Chichirova ◽

A. A. Chichirov ◽

A. I. Minibaev

Keyword(s):

Water Treatment ◽

Anion Exchange ◽

Power Plants ◽

Thermal Power ◽

Treatment Plant ◽

Water Treatment Plant ◽

Wash Water ◽

Production Cycle ◽

Thermal Power Plants ◽

Alkaline Waste

The main sources of highly concentrated multicomponent technological solutions at thermal power plants (TPPs) are water treatment plants. Analysis of operation of the ion-exchange water treatment plant at the Nizhnekamsk Thermal Power Plant-1 showed that half of alkali supplied to regeneration of the anion-exchange alkali filters is not used, but is discharged for neutralization and then to wastewater. Due to the fact that the cost of alkali used in technological processes is quite high, it is economically feasible to process the alkaline waste with the alkali extraction and its reuse in the production cycle. The article presents the experimental results on the electro-membrane separation of alkaline waste regeneration solutions and wash water after anion-exchange filter regeneration. The revealed differences in the selectivity of various ion transfer through the electrodialysis apparatus membranes, depending on time and amount of transmitted electricity, allowed us to establish the possibility of obtaining an alkaline solution purified from impurities.

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Minimization of Pollution Concentration on a Given Time Interval for the Waste Water Cleaning Plant

Journal of Control Science and Engineering ◽

10.1155/2010/712794 ◽

2010 ◽

Vol 2010 ◽

pp. 1-10 ◽

Cited By ~ 1

Author(s):

E. V. Grigorieva ◽

E. N. Khailov

Keyword(s):

Waste Water ◽

Water Treatment ◽

Waste Water Treatment ◽

Treatment Plant ◽

Water Treatment Plant ◽

Waste Water Treatment Plant ◽

Polluted Water ◽

Time Interval ◽

Bounded Control ◽

Water Cleaning

A model of a waste water treatment plant is investigated. The model is described by a nonlinear system of two differential equations with one bounded control. An optimal control problem of minimizing concentration of the polluted water on the given time interval is stated and solved analytically with the use of the Pontryagin Maximum Principle and Green's Theorem. Computer simulations of a model of an industrial waste water treatment plant show the advantage of using our optimal strategy. Possible applications are discussed.

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Effects of ozonation on disinfection by-product formation potentials and biostability in a pilot-scale drinking water treatment plant with micro-polluted water

Environmental Technology ◽

10.1080/09593330.2020.1829083 ◽

2020 ◽

pp. 1-12

Author(s):

Huan Gao ◽

Hongjun Ji ◽

Ran Yu ◽

Guangcan Zhu

Keyword(s):

Drinking Water ◽

Water Treatment ◽

Treatment Plant ◽

Drinking Water Treatment ◽

Water Treatment Plant ◽

Pilot Scale ◽

Product Formation ◽

Polluted Water ◽

Drinking Water Treatment Plant

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Research on technological unit of wastewater disposal after regeneration of H-cation exchange filters

E3S Web of Conferences ◽

10.1051/e3sconf/202021601083 ◽

2020 ◽

Vol 216 ◽

pp. 01083

Author(s):

Alena Vlasova ◽

Sergei Vlasov

Keyword(s):

Waste Water ◽

Water Treatment ◽

Power Plants ◽

Thermal Power ◽

Treatment Plant ◽

Water Treatment Plant ◽

Thermal Power Plants ◽

Wastewater Disposal ◽

Technological Unit ◽

Standard Level

АnnotationTechnological installation of waste water disposalafter washing of H-cation filters is quite promising idea of avoiding penalties and reuse of waste water in cycle of thermal power plants (TPP). The development of this unit is based on reactions that occur when mixing several TPP water treatment plant wastes, namely, neutralization and exchange-type reactions. As neutralizing reagent, the sludge of the water treatment plant is used, which consists of CaCO3 by 80%. This method reduces the concentration of sul-phate-containing components in wastewater to a standard level, and also provides neutral wastewater with-out the use of additional purchase reagents.

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Modeling settling tanks for water treatment using computational fluid dynamics

Journal of Hydroinformatics ◽

10.2166/hydro.2015.069 ◽

2015 ◽

Vol 17 (5) ◽

pp. 745-762 ◽

Cited By ~ 10

Author(s):

Anastasios Stamou ◽

Anthoula Gkesouli

Keyword(s):

Fluid Dynamics ◽

Computational Fluid Dynamics ◽

Water Treatment ◽

Suspended Solids ◽

Treatment Plant ◽

Water Treatment Plant ◽

Hydraulic Efficiency ◽

Dynamics Model ◽

Negative Effect ◽

Settling Performance

A computational fluid dynamics model is presented for the calculation of the flow, suspended solids, and tracer concentration fields in the settling tanks of the water treatment plant of Aharnes, an important component of the water supply system of the greater area of Athens, Greece. The model is applied to investigate the expected negative effect of the wind on the hydraulic and settling performance of the tanks and to evaluate the improvement resulting from the installation of one and two baffles; the wind is modeled using a simple and very conservative approach that involves the setting of a constant horizontal flow velocity on the free surface. The model is calibrated and verified with field turbidity measurements. Calculations show that the effect of wind on the flow field and the hydraulic efficiency is strong, with the creation of massive re-circulation areas with intense mixing and high short circuiting; however, the effect of wind on the settling performance of the tanks is not pronounced. The removal efficiency of the tanks, which is 72.48% in calm conditions, is reduced to 68.07% for windy conditions; moreover, it increases to 70.00 and 71.04%, when one or two baffles are installed, respectively.

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Treatment of Micro-Polluted Water with Diatomite-Enhanced Coagulation

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.864-867.2013 ◽

2013 ◽

Vol 864-867 ◽

pp. 2013-2017

Author(s):

Feng Xun Tan ◽

Nan Lu ◽

Dao Ji Wu ◽

Ning Wang ◽

Rong Zhen Zhou

Keyword(s):

Water Treatment ◽

North China ◽

Treatment Plant ◽

Water Treatment Plant ◽

Polluted Water ◽

Enhanced Coagulation ◽

Optimum Ph ◽

Removal Efficiencies

Raw micro-polluted water was sampled from a water treatment plant in Gaomi, a town in north China. The treatment with diatomite-enhanced coagulation was investigated, including the effect of dose and the dosing point of diatomite on enhanced coagulation. The results showed that the removal efficiencies of turbidity, color, UV254 and CODMn could reach 78.99 %, 76.19 %, 29.63 % and 22.77 %, respectively, when 15 mg/L diatomite was added at 30 minutes before coagulation. It was found that the optimum pH of diatomite-enhanced coagulation was approximately 6~7.

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Isolation of viruses from drinking water at the Pont-Viau water treatment plant

Canadian Journal of Microbiology ◽

10.1139/m81-063 ◽

1981 ◽

Vol 27 (4) ◽

pp. 417-420 ◽

Cited By ~ 20

Author(s):

Pierre Payment

Keyword(s):

Drinking Water ◽

Water Treatment ◽

Treatment Plant ◽

Water Treatment Plant ◽

Polluted Water ◽

Residual Chlorine ◽

Raw Water ◽

Poliovirus Type ◽

Treatment Processes

Viruses were isolated from every sample of raw (100 L) and treated (1000 L) water collected at a water treatment plant drawing sewage-contaminated river water. Few plaque-forming isolates were found but cytopathogenic viruses were isolated as frequently in drinking water as in raw water. In drinking water some samples contained more than 1 cytopathogenic unit per litre, but most contained 1–10/100 L. These viruses had not been inactivated or removed by prechlorination, flocculation, filtration, ozonation, and postchlorination. There were no coliforms present and a residual chlorine level had been maintained. Poliovirus type 1 was a frequent isolate but many isolates were nonpoliovirus. The presence of these viruses in drinking water raises questions about the efficacy of some water treatment processes to remove viruses from polluted water.

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