Opportunities for process intensification in the UK water industry: A review

Coward, Thea; Tribe, Harry; Harvey, Adam P.

doi:10.1016/j.jwpe.2017.11.010

Cited by 19 publications

(9 citation statements)

References 106 publications

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“…Paper [7] analyzed the application of new processes to intensify the operation of water treatment facilities. The expediency of using a non-thermal plasma, the stirring reactors with partitions, sonication, twisting a flux, the application of rotating plates, ultraviolet irradiation, microwaves processing, ozone flotation, inkjet oscillatory devices was considered taking into consideration several aspects.…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

“…The analysis of experimental data indicates that the modification of the coagulant solution leads to a more substantial violation of the dynamic equilibrium of the water-dispersed system. Therefore, it creates more favorable conditions for the formation of ion associates -the embryos of a new phase of the submicroscopic and colloidal stage of dispersiveness, which perform the role of additional coagulation centers in water purification [7,12].…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

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Applying a modified aluminum sulfate solution in the processes of drinking water preparation

Dushkin

Shevchenko

2020

EEJET

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This paper reports a study on the application of aluminum sulfate solution, modified by the magnetic field and electrocoagulation, in the processes of drinking water preparation. The modification of the coagulant solution makes it possible to intensify water purification processes, to reduce reagent consumption by 25-30 %. It has been found that a dose of the modified aluminum sulfate solution of 28-30 mg/dm 3 improves the efficiency of removal of suspended substances and coloration by 35-40 %. The dosage of the conventional reagent solution was 40 mg/dm 3 while reaching the same purification parameters. Modifying a solution of aluminum sulfate with the magne tic field and electrocoagulation increases the hydraulic size of the coagulated suspension. A change in the hydraulic size in the suspension has been studied at different periods of the year. In winter, when treating water with the modified aluminum sulfate solution, there a decrease in the suspension content whose hydraulic size is 0.1 mm/s and less, from 89 % to 22 %. In this case, the content of suspended substances at settling decreases from 8.5-12.5 mg/dm 3 to 5.6-8.3 mg/dm 3. In spring, when using the modified coagulant solution, the content of suspension whose size is 0.1 mm/s and less decreased from 55 % to 15 %. In summer, there is an increase in the content of suspension whose size is 0.3-0.5 mm, from 58 % (a conventional reagent solution) to 66 % (the modi fied reagent solution). This indicates an intensification of the coagulation of impurities and the clarification of water. The experimental data testify to an increase in the effectiveness of discoloration of natural low-turbid colored water to 63.3-63.9 % for the modified reagent solution at 45.5 % for a conventional reagent solution. A change in the bacteriological parameters has been determined:

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Section: Literature Review and Problem Statementmentioning

confidence: 99%

Section: Literature Review and Problem Statementmentioning

confidence: 99%

Applying a modified aluminum sulfate solution in the processes of drinking water preparation

Dushkin

Shevchenko

2020

EEJET

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“…Thus, there is industrial interest in enhancing ion exchange operational efficiencies, where, importantly for this study, methods of process intensification (PI) offer particular advantages [33]. In general, PI is focused on novel operational unit designs that can provide step-changes in the process efficiency while considerably decreasing the equipment foot-prints, energy consumption, and/or waste formation [34], often achieved through unit modularisation and process combination.…”

Section: Introductionmentioning

confidence: 99%

“…While originally focused on fine chemical production, there is increasing research into the PI of multiphase solids handling operations, driven largely by successes in the pharmaceuticals industry [35]. The use of PI in effluent treatment specifically is comparatively less developed, although it is an area with a lot of potential to drive solutions through technology transfer [33]. In many respects, flotation can be considered one of the original PI techniques for effluent treatment.…”

Section: Introductionmentioning

confidence: 99%

“…For adsorption or ion exchange processes, there is increasing research into using intensified flow reactors to overcome constraints associated with diffusion limited adsorption kinetics [34,[47][48][49][50]. One of the most prevalent examples in the literature is rotating bed reactors (RBRs), which were originally designed for gas-liquid separation operations, where high centrifugal gravity fields lead to enhanced mass transfer characteristics [33]. More recently, they have also been utilised for the removal of contaminants from liquids, including dyes, fertilisers, and heavy metals [47][48][49][50][51].…”

Section: Introductionmentioning

confidence: 99%

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Kinetic Studies of Cs+ and Sr2+ Ion Exchange Using Clinoptilolite in Static Columns and an Agitated Tubular Reactor (ATR)

et al. 2021

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Natural clinoptilolite was studied to assess its performance in removing caesium and strontium ions, using both static columns and an agitated tube reactor (ATR) for process intensification. Kinetic breakthrough curves were fitted using the Thomas and Modified Dose Response (MDR) models. In the static columns, the clinoptilolite adsorption capacity (qe) for 200 ppm ion concentrations was found to be ~171 and 16 mg/g for caesium and strontium, respectively, highlighting the poor material ability to exchange strontium. Reducing the concentration of strontium to 100 ppm, however, led to a higher strontium qe of ~48 mg/g (close to the maximum adsorption capacity). Conversely, halving the column residence time to 15 min decreased the qe for 100 ppm strontium solutions to 13–14 mg/g. All the kinetic breakthrough data correlated well with the maximum adsorption capacities found in previous batch studies, where, in particular, the influence of concentration on the slow uptake kinetics of strontium was evidenced. For the ATR studies, two column lengths were investigated (of 25 and 34 cm) with the clinoptilolite embedded directly into the agitator bar. The 34 cm-length system significantly outperformed the static vertical columns, where the adsorption capacity and breakthrough time were enhanced by ~30%, which was assumed to be due to the heightened kinetics from shear mixing. Critically, the increase in performance was achieved with a relative process flow rate over twice that of the static columns.

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Intensification of Textile Wastewater Treatment Processes

Rahimi

Mosleh

2018

Advanced Textile Engineering Materials

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Opportunities for process intensification in the UK water industry: A review

Cited by 19 publications

References 106 publications

Applying a modified aluminum sulfate solution in the processes of drinking water preparation

Applying a modified aluminum sulfate solution in the processes of drinking water preparation

Kinetic Studies of Cs+ and Sr2+ Ion Exchange Using Clinoptilolite in Static Columns and an Agitated Tubular Reactor (ATR)

Intensification of Textile Wastewater Treatment Processes

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