Evaluation of synthesized antiscalants for cooling water system application

Kavitha, A.; Vasudevan, T.; Prabu, H. Gurumallesh

doi:10.1016/j.desal.2010.09.047

Cited by 93 publications

(46 citation statements)

References 21 publications

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“…Перспективным направлением методов совер-шенствования ВХР оборотных систем охлаждения АЭС является введение ингибиторов отложений на-кипеобразователей [5,6] и использование комплекс-ных оборотных систем охлаждения с включением в систему установок кондиционирования добавочной и циркуляционной вод, со структурными изменени-ями и минимизацией сбросов продувок в окружа-ющую среду и обоснование методов расчета водно-химического режима (ВХР) комплексной оборотной системы охлаждения (КОСО) с долгосрочным про-гнозированием результатов их эффективной экс-плуатации [7].…”

Section: анализ литературных данных и постановка проблемыunclassified

Water chemistry calcucation method of the circulating cooling system with recirculation

Кишневский

Чиченин

Шуляк

2013

EEJET

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Section: анализ литературных данных и постановка проблемыunclassified

Water chemistry calcucation method of the circulating cooling system with recirculation

Кишневский

Чиченин

Шуляк

2013

EEJET

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“…Ca and Mg that deposit as scale on heat transfer surfaces), silica, iron, microbiological species, oils and dissolved gases. Scaling and corrosion associated with the use of natural hard water in cooling towers during recirculation pose great problems from both economical and technical points of view, such as decreased system efficiency and increased frequency of chemical cleaning (Kavitha et al, 2011). Consequently there are three components to a cooling water treatment program: scale and deposit control, corrosion control, and microbiological control.…”

Section: Introductionmentioning

confidence: 99%

“…Polymaleic acid (PMA) was found to effectively reduce scale formation when the makeup water was concentrated four times in a recirculating cooling system. To inhibit scale formation in cooling water systems, polyacrylic acid was synthesised and characterised by Kavitha et al (2011). The ability of the synthesised polymer to mitigate the calcium carbonate and calcium sulphate scale formation was tested through chemical screening and electrochemical impedance techniques.…”

Section: Introductionmentioning

confidence: 99%

Treatment of Wastewater to Meet the Requirements for Cooling Water Systems in Jordan’s Nuclear Plants

Al‐Rawajfeh¹,

Araj²

2013

Chemical and Process Engineering

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Scaling and corrosion associated with the use of natural hard water in cooling towers during recirculation pose great problems from both economical and technical points of view, such as decreased system efficiency and increased frequency of chemical cleaning. Treated municipal wastewater (MWW) is a promising alternative to freshwater as power plant cooling system makeup water, especially in arid regions. In this work, hybrid systems of salt precipitation (SP), nanofiltration (NF) and reverse osmosis (RO) were investigated, as potential pretreatment processes for wastewater reuse as cooling water in the planned Jordan nuclear power plants. The As-Samra wastewater was used to calculate the potential of carbonate and sulfate scale formation. The results were compared to scale potentials from Palo Verde wastewater. Four cases were investigated; SP, NF, SP-RO and NF-RO. The SP pretreatment cases showed the highest monovalent to divalent ratio because of a high removal of Ca and Mg and addition of Na from the chemicals of the SP step. The NF pretreatment cases, showed the lowest calcium sulfate scale potential and this potential decreases with the % pretreatment. The scale amount increases very slightly with concentration times when the SP and NF product is desalinated by RO step.

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“…When mineral constituents remain soluble, they have no negative effect on heat transfer efficiency [19].…”

Section: Introductionmentioning

confidence: 99%

Scaling Conditions Inside Improved Bench- Scale Single Effect Vacuum Evaporator

2017

Nov. 27-28, 2017 South Africa ASETWM-17, RCABES-17 &Amp; EBHSSS-17

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Abstract-An investigation into the potential of scale formation during the application of MED (Multi-Effect Distillation) technology for the treatment of Reverse Osmosis (RO) Retentate was carried out in this study. An improved bench scale single effect evaporation unit was designed using Solidworks Simulation Package and appropriate materials. Operating conditions were determined to be 80°C and 0.48 bar with the design constructed to maximize evaporation. Once assembled, RO Retentate was introduced to the evaporator and an evaporation rate of 4L/h (22.3L/m2/h) and the variation of the concentrations of scale forming elements determined -the evaporation translates to 34.5% water recovery. Speciation using PHREEQ-C modelling software showed that the concentrations of scale forming agents such as CaCO3 and CaSO4 increased after evaporation. Scale prediction was explored using French Creek software.

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Evaluation of synthesized antiscalants for cooling water system application

Cited by 93 publications

References 21 publications

Water chemistry calcucation method of the circulating cooling system with recirculation

Water chemistry calcucation method of the circulating cooling system with recirculation

Treatment of Wastewater to Meet the Requirements for Cooling Water Systems in Jordan’s Nuclear Plants

Scaling Conditions Inside Improved Bench- Scale Single Effect Vacuum Evaporator

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