Pilot study on the ceramic membrane pre-treatment for seawater desalination with reverse osmosis in Tianjin Bohai Bay

Desalination ◽  
2011 ◽  
Vol 279 (1-3) ◽  
pp. 190-194 ◽  
Author(s):  
Zhaoliang Cui ◽  
Weihong Xing ◽  
Yiqun Fan ◽  
Nanping Xu
Keyword(s):  
Pilot Study ◽  
Reverse Osmosis ◽  
Ceramic Membrane ◽  
Bohai Bay ◽  
Seawater Desalination ◽  
Pre Treatment

scholarly journals Construction and operation of the MIDES plant

2021 ◽  
pp. 105-136
Author(s):  
Naiara Hernández-Ibáñez ◽  
Juan Arévalo ◽  
Vicente F. Mena ◽  
Victor Monsalvo-Garcia ◽  
Frank Rogalla
Keyword(s):  
Reverse Osmosis ◽  
Brackish Water ◽  
Water Sources ◽  
Water Desalination ◽  
Seawater Desalination ◽  
Desalination Plant ◽  
Microbial Desalination Cell ◽  
Pre Treatment ◽  
Construction Operation ◽  
Different Water Sources

Abstract This chapter presents the construction, operation, and validation of all the MIDES systems, including water pre-treatment, wastewater pre-treatment, the microbial desalination cell (MDC), low-pressure reverse osmosis (RO), and post-treatment (remineralization and disinfection). MIDES technology has been validated with different water sources: brackish water from Demo Site 1, (Racons Brackish Water Desalination Plant (BWDP), located in Denia, Spain) and seawater from Demo Site 2 (Fonsalía Seawater Desalination Plant (SWDP), located in Guía de Isora, Spain). In this chapter, the preparation of both demo sites for the reception and installation of the pilot plants is also presented.

Pre-treatment strategies for seawater desalination by reverse osmosis system

Desalination ◽  
2009 ◽  
Vol 249 (1) ◽  
pp. 308-316 ◽  
Author(s):  
Noka Prihasto ◽  
Qi-Feng Liu ◽  
Seung-Hyun Kim
Keyword(s):  
Reverse Osmosis ◽  
Treatment Strategies ◽  
Seawater Desalination ◽  
Pre Treatment

Evaluation of microfiltration system performance as pre-treatment for reverse osmosis seawater desalination through pilot-plant operation

2006 ◽  
Vol 6 (4) ◽  
pp. 163-169
Author(s):  
S.H. Kim ◽  
J.S. Yoon ◽  
C.H. Yoon
Keyword(s):  
Energy Consumption ◽  
Reverse Osmosis ◽  
Chlorophyll A ◽  
Flow Rate ◽  
Pilot Plant ◽  
Red Tide ◽  
Seawater Desalination ◽  
Plant Operation ◽  
Chlorophyll A Concentration ◽  
Pre Treatment

This study was undertaken to evaluate the suitability of microfiltration (MF) as pre-treatment for reverse osmosis (RO) seawater desalination to treat the seawater suffering from red-tide contamination using long-term operation of pilot plant. The one and a half year pilot MF operation had two objectives: stable production of the flow rate of 5 m3/h and acceptable water quality (SDI less than 3). The pilot plant operation revealed that the MF system successfully produced the target flow rate despite red-tide contamination of the seawater. The average flow rate of 5.2 m3/h was obtained at the average operating pressure of 0.53 bar. However, the MF system failed to achieve the target flow rate at red-tide bloom. When red-tide bloom occurred the chlorophyll-a concentration became 136 mg/m3, the flow rate decreased to half of the target, and energy consumption became extremely high. Subsequently, the operation was stopped. According to the relationship between the flow rate of the MF system and chlorophyll-a concentration developed in this study, it would be desirable to stop the MF operation at chlorophyll-a concentration of 57 mg/m3. The MF system produced acceptable quality water for RO feeding. The SDI of the MF treated was consistently less than 3. The MF system consumed 0.5 KWh of energy to produce 1 m3/h of MF treated, if the data during the red-tide bloom were excluded. Extra equipment (intake pump, control system, monitoring system, air conditioner) caused higher energy consumption than expected.

Assessment of ultrafiltration as a pretreatment of reverse osmosis membranes for surface seawater desalination

2003 ◽  
Vol 3 (5-6) ◽  
pp. 437-445 ◽  
Author(s):  
A. Brehant ◽  
V. Bonnelye ◽  
M. Perez
Keyword(s):  
Reverse Osmosis ◽  
Low Dose ◽  
Operating Conditions ◽  
Surface Seawater ◽  
Seawater Desalination ◽  
Dead End ◽  
Pre Treatment ◽  
Desalination Plants ◽  
The Impact ◽  
Variable Quality

Pre-treatment of seawater feeding reverse osmosis (RO) membranes is a key step in designing desalination plants, especially when treating surface seawater with highly variable quality. The objective of the study was to assess the potential of ultrafiltration (UF) pre-treatment prior to RO for desalting seawater with high-fouling tendency. A UF pilot plant equipped with an Aquasource membrane was directly operated on Gibraltar surface seawater in dead-end mode. The competitiveness of UF pre-treatment towards conventional pre-treatment was assessed by looking at the impact on RO hydraulic performances. The study showed that UF provided permeate water with higher quality than with a conventional pre-treatment. The main seawater compounds responsible for UF fouling were organic matter released by phytoplanktonic organisms. The combination of UF with a pre-coagulation at low dose helped in controlling this fouling and providing water in steady state conditions. The performance of RO membranes downstream of UF exceeded the usual operating conditions encountered in seawater desalination. The combined effect of higher recovery and higher flux rate promises to significantly reduce the RO plant costs.

Ozone enhanced ceramic membrane filtration for wastewater recycling

2019 ◽  
Vol 14 (2) ◽  
pp. 331-340
Author(s):  
P. Spencer ◽  
S. Domingos ◽  
B. Edwards ◽  
D. Howes ◽  
H. Shorney-Darby ◽  
...  
Keyword(s):  
Reverse Osmosis ◽  
Pilot Plant ◽  
Membrane Filtration ◽  
Ceramic Membrane ◽  
Treatment Plant ◽  
Ceramic Membranes ◽  
Treated Wastewater ◽  
Wastewater Recycling ◽  
Pre Treatment ◽  
Uf Membranes

Abstract The Water Corporation of Western Australia uses polymeric ultrafiltration (UF) membranes across a range of applications including surface waters with high natural organic matter (NOM), recycling of secondary treated wastewater and pre-treatment for seawater reverse osmosis (SWRO). These challenging raw water conditions require expensive chemical dosing and clean-in-place (CIP) regimes, high frequency of membrane replacement and reduced membrane life. The greater durability of ceramic membranes, with optimal ozone and coagulant dosing, offer a potential capital and operating advantage over polymeric UF membranes. The Water Corporation collaborated with PWN Technologies (PWNT) to establish a ceramic membrane pilot plant at the Beenyup Wastewater Treatment Plant (WWTP). Optimised performance of the pilot plant was established and compared with existing UF membranes treating secondary treated wastewater prior to reverse osmosis (RO) in an indirect potable wastewater recycling application. Findings show a sustainable flux rate of 150 L/m2/h is achievable with ceramic MF membranes while filtering secondary treated wastewater. Higher flux rates up to 250 L/m2/h have been tested and are possibly sustainable, however, other bottlenecks in the pilot plant (ozone generator capacity) prevented longer test runs at this flux. Comparable design flux rates for polymeric UF membranes are 50 L/m2/h.

Kristal® 2000 PVDF hollow fiber UF membrane in the pretreatment for seawater desalination

2012 ◽  
Vol 7 (4) ◽  
Author(s):  
Zanguo Peng ◽  
Zhaoxuan Zhang ◽  
Pandurangan Mohan ◽  
Kasinathan Manimaran ◽  
Dongfei Li
Keyword(s):  
Water Quality ◽  
Pilot Study ◽  
Reverse Osmosis ◽  
Hollow Fiber ◽  
Large Scale ◽  
Operating Costs ◽  
Feed Water ◽  
Seawater Desalination ◽  
Seawater Reverse Osmosis ◽  
Uf Membranes

Membrane technology has emerged as a dominant solution to seawater desalination due to its superior advantages such as stable output water quality, lower energy consumption, ease of operation and smaller footprint. However, the design of spiral wound reverse osmosis (RO) membranes used in desalination does not allow for backwash or air scouring, thus rendering the RO membrane highly susceptible to fouling. Pretreatment for the RO system is therefore essential to ensure a long service life of the RO membranes. For waters containing suspended solids of up to 75 mg/L (such as that in the SingSpring Desalination Plant at Tuas, Singapore), conventional pretreatment methods (such as dissolved air floatation and filtration (DAFF), chemical dosing and cartridge filtration) require regular operator intervention to produce a permeate of reasonably quality. Ultrafiltration (UF) as a pretreatment for seawater desalination can offer better treated water, lower operating costs, a smaller footprint, and flexibility in dealing with poor or varying feed water quality. By improving the pretreatment permeate water quality, reducing operating costs and the footprint, capital expenses can be lowered. Greater stability is also achieved during times of poor or variable feed water conditions (such as periods of algalbloom). A pilot study was conducted at SingSpring to track the performance of Hyflux's Kristal® 2000 hollow fiber UF membranes as pretreatment for the seawater reverse osmosis (SWRO) system. The results of the pilot study will enable the design of future large-scale UF-SWRO membrane projects for seawater desalination.

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