Development of the most adequate pre-treatment for high capacity seawater desalination plants with open intake

Elguera, A. Muñoz; Báez, Sebastián Ovidio Pérez

doi:10.1016/j.desal.2005.04.033

Cited by 23 publications

(6 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…atmosphere, while closed configurations usually utilize pressure for driving the water through the beds [56]. Though open atmosphere configurations might sound the most economical option, the pressurized media filtration dominates in RO pretreatment where it can reduce SDI by a factor of 2 and produce permeate water with 0.1 NTU [5,53] bed with a dual media filter bed of sand and anthracite.…”

Section: Gravity Driven Filtration Usually Use Open Configurations Wimentioning

confidence: 99%

“…It was concluded that the dual media filter produced similar water quality as the single bed, with an added advantage of operating at greater filtration cycles (around 3 times higher) directly resulting in a 10% increase in water production. Often, cartridge filtration is used as a last pretreatment step using 1-10µm filters for the final removal of suspended solids which had passed through the media filtration unit before [56]. The Pilot plant trials of SWRO in Singapore [59] reported permeate water quality of SDI 6.1-6.5 using a 5 µm cartridge filter and a SDI value of 4.2-6.2 using a 1 µm cartridge filter.…”

Section: Gravity Driven Filtration Usually Use Open Configurations Wimentioning

confidence: 99%

See 1 more Smart Citation

Reverse osmosis pretreatment technologies and future trends: A comprehensive review

2019

View full text Add to dashboard Cite

Recent progress in reverse osmosis (RO) technology is not limited to RO membrane materials, module designs and RO process optimization. It involves prior feed treatment which directly impacts RO system performance. The ongoing challenges of membrane fouling in RO membranes can be addressed by increasing the operational efficiency through the use of correct pretreatment options which can mitigate organic and inorganic fouling by selectively rejecting contaminants prior to reaching the RO unit. Highly polluted water resources have put critical stress on the existing conventional pretreatment techniques, whereby membrane pretreatment has emerged as a promising alternative. This paper provides an overview of the development and current trends in conventional and nonconventional RO pretreatment techniques whereby the techniques are critically reviewed to 2 inform readers of potential improvements in such areas. This paper addresses the major drawbacks of conventional pretreatment methods which have necessitated the use of membrane pretreatment techniques. Special attention is given to microfiltration, ultrafiltration and nanofiltration methods and their development in terms of advanced membrane materials based on ceramics and self-cleaning membranes. Studies from laboratory scale standalone systems, pilot scale and large scale integrated systems for performance, cost and ecological analysis have been reviewed to familiarize readers with the many factors which need to be analyzed for selection of the appropriate pretreatment method(s). The critical review in this paper will help researchers focus more on the areas which have room for further development for cost-effective and advanced RO pretreatment techniques.

show abstract

Section: Gravity Driven Filtration Usually Use Open Configurations Wimentioning

confidence: 99%

Section: Gravity Driven Filtration Usually Use Open Configurations Wimentioning

confidence: 99%

Reverse osmosis pretreatment technologies and future trends: A comprehensive review

2019

View full text Add to dashboard Cite

show abstract

“…Concentrate discharges may also contain substances used during desalination processes, such as those used during pretreatment, cleaning of RO plant filters and membranes, or reducing foaming in distillation plants (Table 1). A wide range of chemicals is used in pretreatment, and chemical choices depend on water quality [49]. For example, chlorine is an effective biocide added to intake water in most desalination plants to control and reduce biofouling throughout the system [23].…”

Section: Chemical Treatmentsmentioning

confidence: 99%

Impact of brine on the marine environment and how it can be reduced

Fernández‐Torquemada¹,

Carratalá²,

Sánchez-Lizaso³

2019

Desalination and Water Treatment

View full text Add to dashboard Cite

Seawater desalination is a potential solution for addressing water shortages. The number of desalination plants projected and constructed in some regions has substantially increased in recent decades. However, desalination process poses some undesirable environmental impacts in terms of energy consumption, land use, and seawater intake, but particularly the most significant impacts are related with effluent disposal and discharge. Thus, the challenge for the desalination industry is to produce new water resources without increasing pressure on the marine environment. The effluent characteristics depend on the feed water and desalination technology used. Negative environmental impacts of brine discharge from a desalination plant can be minimized by appropriate planning. The countermeasures should vary depending on plant size and type, the biological communities in the discharge area, and the area's hydrogeological features. This study overviews the available information about minimizing the harmful effects of the desalination industry. It highlights that an appropriate discharge location must be selected and the mixing of brine with ambient seawater must be maximized to reduce the environmental impacts of brine. Moreover, it is helpful to establish a carefully designed environmental monitoring program to assess brine plume distribution over time while monitoring biota. Frequent environmental monitoring programs of desalination plants normally show that impacts are small, localized, and unimportant; however, significant effects have been detected in some cases. In these cases, effects can be mitigated by introducing devices that increase the mixing of effluent and surrounding seawater or/and by diluting the effluent before discharge.

show abstract

“…Conventional packed-bed filters using granular media such as sand, anthracite, pumice, gravel, and garnet with different effective sizes are beneficial in terms of regeneration, since hydraulic backwashing has proven to be effective in conventional water treatment in restoring capacity [18,40,41]. For constant physicochemical conditions, the granular media filtration process is effective at removing particles significantly larger than a few micrometers or smaller than 0.1 µm [42].…”

Section: Conventional Pretreatmentmentioning

confidence: 99%

Pretreatment in Reverse Osmosis Seawater Desalination: A Short Review

Valavala¹,

Sohn²,

Han³

et al. 2011

Environmental Engineering Research

115

View full text Add to dashboard Cite

Reverse osmosis (RO) technology has developed over the past 40 years to control a 44% market share in the world desalting production capacity and an 80% share in the total number of desalination plants installed worldwide. The application of conventional and low-pressure membrane pretreatment processes to seawater RO (SWRO) desalination has undergone accelerated development over the past decade. Reliable pretreatment techniques are required for the successful operation of SWRO processes, since a major issue is membrane fouling associated with particulate matter/colloids, organic/inorganic compounds, and biological growth. While conventional pretreatment processes such as coagulation and granular media filtration have been widely used for SWRO, there has been an increased tendency toward the use of ultrafiltration/microfiltration (UF/MF) instead of conventional treatment techniques. The literature shows that both the conventional and the UF/MF membrane pretreatment processes have different advantages and disadvantages. This review suggests that, depending on the feed water quality conditions, the suitable integration of multiple pretreatment processes may be considered valid since this would utilize the benefits of each separate pretreatment.

show abstract

Development of the most adequate pre-treatment for high capacity seawater desalination plants with open intake

Cited by 23 publications

References 6 publications

Reverse osmosis pretreatment technologies and future trends: A comprehensive review

Reverse osmosis pretreatment technologies and future trends: A comprehensive review

Impact of brine on the marine environment and how it can be reduced

Pretreatment in Reverse Osmosis Seawater Desalination: A Short Review

Contact Info

Product

Resources

About