Method of removal of colloid iron from groundwater of Western Siberia region by using of carbon dioxide

Machekhina, Ksenia; Shiyan, Ludmila N.; Tropina, Elena A.; Voyno, D. A.

doi:10.1109/ifost.2012.6357483

Cited by 3 publications

(3 citation statements)

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“…The iron colloid system is destabilized due to the decrease of pH. As it was shown earlier [15], the stability of iron colloid substances depends on pH value.…”

Section: Resultsmentioning

confidence: 68%

Removal of Iron Colloid Substances from Aqueous Solutions Using Pulsed Corona Discharge

Gryaznova

Preis

Kornev

et al. 2016

KEM

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Pulsed electric discharge has been used for the removal of iron colloid substances from aqueous solutions. The residual concentration of organic substances in aqueous solution depends on the pulse repetition rate. The maximum decrease in organic substances concentration was observed at the pulse repetition rate of 800 pps. Comparison of the results obtained for iron colloid solutions containing humic substances and solutions of humic subtances with no colloids shows that the highest removal efficiency of organic substances was obtained when no iron and silicon ions were present in the solution. The results of our experiments suggest that pulsed electric discharge treatment for the removal of organic substances from natural waters is more efficient at an after-treatment stage, after precipitation of colloid substances.

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“…The iron colloid system is destabilized due to the decrease of pH. As it was shown earlier [15], the stability of iron colloid substances depends on pH value.…”

Section: Resultsmentioning

confidence: 68%

Removal of Iron Colloid Substances from Aqueous Solutions Using Pulsed Corona Discharge

Gryaznova

Preis

Kornev

et al. 2016

KEM

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“…In the near future the research on the suggested method is planned to be carried out in presence of disturbances in more complicated plant models, for example, in models of chemical processes [52,53], water-treatment networks [57,58], power control channels of nuclear reactors and others. In addition, a comparison with the model predictive control (MPC) [59,60] will be investigated.…”

Section: Results Of the Closed-loop Transients Coming From The Applicmentioning

confidence: 99%

Fuzzy adaptive control system of a non-stationary plant with closed-loop passive identifier

Manenti

Rossi

Goryunov

et al. 2015

Resource-Efficient Technologies

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Typically chemical processes have significant nonlinear dynamics, but despite this, industry is conventionally still using PID-based regulatory control systems. Moreover, process units are interconnected, in terms of inlet and outlet material/energy flows, to other neighboring units, thus their dynamic behavior is strongly influenced by these connections and, as a consequence, conventional control systems performance often proves to be poor. This paper proposes a hybrid fuzzy PID control logic, whose tuning parameters are provided in real time. The fuzzy controller tuning is made on the basis of Mamdani controller, also exploiting the results coming from an identification procedure that is carried on when an unmeasured step disturbance of any shape affects the process behavior.In addition, this paper compares a fuzzy logic based PID with PID regulators whose tuning is performed by standard and well-known methods. In some cases the proposed tuning methodology ensures a control performance that is comparable to that guaranteed by simpler and more common tuning methods. However, in case of dynamic changes in the parameters of the controlled system, conventionally tuned PID controllers do not show to be robust enough, thus suggesting that fuzzy logic based PIDs are definitively more reliable and effective.

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Section: Results Of the Closed-loop Transients Coming From The Applic...mentioning

confidence: 99%

Fuzzy adaptive control system of a non-stationary plant with closed-loop passive identifier

Nadezhdin¹,

Manenti²,

Rossi³

et al. 2018

REFFIT

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Typically chemical processes have significant nonlinear dynamics, but despite this, industry is conventionally still using PID-based regulatory control systems. Moreover, process units are interconnected, in terms of inlet and outlet material/energy flows, to other neighboring units, thus their dynamic behavior is strongly influenced by these connections and, as a consequence, conventional control systems performance often proves to be poor. This paper proposes a hybrid fuzzy PID control logic, whose tuning parameters are provided in real time. The fuzzy controller tuning is made on the basis of Mamdani controller, also exploiting the results coming from an identification procedure that is carried on when an unmeasured step disturbance of any shape affects the process behavior. In addition, this paper compares a fuzzy logic based PID with PID regulators whose tuning is performed by standard and well-known methods. In some cases the proposed tuning methodology ensures a control performance that is comparable to that guaranteed by simpler and more common tuning methods. However, in case of dynamic changes in the parameters of the controlled system, conventionally tuned PID controllers do not show to be robust enough, thus suggesting that fuzzy logic based PIDs are definitively more reliable and effective.

show abstract

Method of removal of colloid iron from groundwater of Western Siberia region by using of carbon dioxide

Cited by 3 publications

References 0 publications

Removal of Iron Colloid Substances from Aqueous Solutions Using Pulsed Corona Discharge

Removal of Iron Colloid Substances from Aqueous Solutions Using Pulsed Corona Discharge

Fuzzy adaptive control system of a non-stationary plant with closed-loop passive identifier

Fuzzy adaptive control system of a non-stationary plant with closed-loop passive identifier

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