Mathematical Description and Method of Calculating the Technological Parameters of an Electrodialysis Apparatus for Chemical Industrial Wastewater Treatment

Шестаков, К. В.; Лазарев, С. И.; Selivanov, Yu. T.; Khokhlov, P. A.; Lomakina, O.V.

doi:10.1007/s10556-020-00738-3

Cited by 3 publications

(1 citation statement)

References 6 publications

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“…According to simulations, ED has an advantage over RO in terms of energy consumption when treating brackish water up to 5 g/L, with 80% of salt removal achieved with less than 0.6 kWh/m 3 of energy [16]. It offers advantages such as easy operation and maintenance, low pretreatment requirements, and a long lifespan, making it widely applied in brackish water desalination, wastewater treatment, and metal recovery [17][18][19]. While the energy consumption of RO is lower than ED in seawater desalination applications, ED has lower energy consumption in brackish water applications [20,21].…”

Section: Introductionmentioning

confidence: 99%

Performance Study on Brackish Water Desalination Efficiency Based on a Novel Coupled Electrodialysis–Reverse Osmosis (EDRO) System

Fu,

Li,

et al. 2024

Water

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Reverse osmosis (RO) is a commonly used desalination technology, but due to high requirements concerning the quality of the feed water, there still exists permeate flux related to the operating conditions, and the solute removal rate is low. Electric fields have a facilitating effect on RO desalination performance. Previous studies have focused on investigating the combination of RO and electrodialysis (ED) processes separately, without directly exploiting their interactions. To address this issue, this study proposes a novel coupling device that combines both RO and ED technologies in a single unit and investigates their mutual enhancement effects on brackish water desalination. The results show that the coupled EDRO system can mutually enhance the performance of RO and ED processes. The permeate flux ratio of the RO membrane increased with increasing voltage, reaching a maximum value of 23.7% at a feed concentration of 10,000 mg/L. The solute rejection by the ion-exchange membrane also increased with increasing pressure, reaching a maximum value of 14.95% at the same feed concentration. In addition, the specific energy consumption of the coupled system was also reduced compared to a standalone operation, with maximum reductions of 9.5% and 19.2% for RO and 2.5% and 3.4% for ED at 5000 and 10,000 mg/L feed concentrations, respectively.

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