Recent operational experiences of FILMTEC™ NF270 membrane in Europe

2011 ◽  
Vol 64 (1) ◽  
pp. 228-232 ◽  
Author(s):  
Katariina Majamaa ◽  
Justyna Warczok ◽  
Martti Lehtinen
Keyword(s):  
Water Quality ◽  
Water Treatment ◽  
Organic Contaminants ◽  
Potable Water ◽  
Soft Drink ◽  
Low Cost ◽  
Industrial Water ◽  
The Third ◽  
Uf Membranes ◽  
Operation Results

Nanofiltration (NF) is an attractive technology for potable and industrial water treatment because NF operates between ultrafiltration (UF) and reverse osmosis (RO) membranes. NF is designed to remove a high percentage of organic contaminants (humic acids, pesticides, color bodies) while passing a medium to high percentage of salt. Compared to UF membranes, the NF product water quality is significantly better; compared to comparable RO treatment systems NF systems require lower operating pressures. Due to these features, NF is increasingly used in a broad range of water treatment applications. The general applications include softening, as well as color, organics and micro-organism removal. DOW FILMTEC™ NF270-400 is one the most frequently used elements in water treatment and this paper presents examples of three recent NF270-400 installations in Europe. The first two plants, Eupen and Stembert, are located in Belgium and produce potable water from surface water. The third one is a Scandinavian plant which purifies groundwater for a brewery and soft drink production. The presented operation results prove NF to be a highly competitive technique for low cost water treatment.

MASALAH DAN ALTERNATIF TEKNOLOGI PENGOLAHAN AIR UNTUK MASYARAKAT MISKIN KOTA

2018 ◽  
Vol 6 (3) ◽  
Author(s):  
Arie Herlambang
Keyword(s):  
Water Treatment ◽  
Ground Water ◽  
Potable Water ◽  
Diarrheal Disease ◽  
Low Cost ◽  
Clean Water ◽  
Treatment Technology ◽  
Alternative Technologies ◽  
The Poor ◽  
Daily Water

Clean water to poor communities who live in crowded municipal area is stillexpensive and a luxury. This condition is evidenced by the number of people whouse ground water for their daily water, because water taps still seems expensivefor them. Diarrheal disease is still relatively high for Indonesia, where nearly 16thousand people suffer from diarrhea due to poor sanitation. To help the poor inthe city, there are several alternative technologies that can be applied to publicaccess to clean water and adequate low-cost, including ground water treatmenttechnology with a filter system equipped with an ultraviolet sterilizer, or ozonegenerators, or using ultrafiltration, if possible can also use the reverse osmosismembrane that for fresh water. Arsinum is the best alternative should be chosenfor fulfilled potable water in slump area.Keywords : Sanitation, water treatment technology, portable water, low-cost, slump area

scholarly journals Evaluation of adaptive low cost solar water pasteurization device for providing safe potable water in rural households

2019 ◽  
Vol 17 (2) ◽  
pp. 274-286 ◽  
Author(s):  
Sharmin Zaman ◽  
Abu Yousuf ◽  
Anowara Begum ◽  
Md Latiful Bari ◽  
K. S. Rabbani
Keyword(s):  
Water Quality ◽  
Uv Radiation ◽  
Rural Areas ◽  
Potable Water ◽  
Low Cost ◽  
Radiation Emission ◽  
Life Study ◽  
Study Results ◽  
Polyethylene Bags ◽  
Water Scarce

Abstract This study was conducted to evaluate the effectiveness of a simplified, low cost, pasteurization device in inactivating the diarrheal pathogens present in pond/lake/river water in order to provide safe potable water to people living in the rural areas of low resource countries. In this process, water in polyethylene bags was exposed to sunshine, where UV radiation emissions and heat absorption from the sunshine occurs simultaneously, and maintaining the heating at <60 °C, and minimum UV radiation emissions of 996.2 W/m2 for approximately 30 minutes was found enough to inactivate diarrheal pathogens in water. The synergistic effect of heat, UV radiation emission and holding time causes the destruction of diarrheal pathogens. However, the performance of the device depends on the thickness of the insulation and the air gap between polyethylene bags. Regardless of sample sources, the highest population reduction of Escherichia coli observed in the bacterial challenge study was 6.8 ± 0.4 log CFU/ml. The physicochemical properties were found acceptable compared with USEPA potable water quality except turbidity, which is acceptable according to the BDS standard, and the shelf-life study results demonstrated that 6 months' storage of pasteurization device-treated water at room temperature is possible without compromising water quality. Therefore, this simplified pasteurization device could be useful in potable water-scarce areas of the world.

Partial demineralisation of drinking water using carbon dioxide regenerated ion exchangers

2002 ◽  
Vol 2 (1) ◽  
pp. 57-62 ◽  
Author(s):  
W.H. Höll ◽  
K. Hagen
Keyword(s):  
Carbon Dioxide ◽  
Water Quality ◽  
Drinking Water ◽  
Water Treatment ◽  
Cation Exchanger ◽  
Low Cost ◽  
Exchange Process ◽  
Drinking Water Treatment ◽  
Acidic Cation Exchanger ◽  
Ion Exchange Process

CARIX is an ion exchange process which usually applies a mixed bed consisting of a weakly acidic and a strongly basic exchanger material. Carbon dioxide is applied as the only chemical for regeneration of the exchangers. As a consequence, the effluent contains only the amount of salt eliminated during the service cycle. CARIX allows a combined partial softening/dealkalisation/sulfate/nitrate of drinking water. A modification of the process uses exclusively a weakly acidic cation exchanger and allows a softening/dealkalisation. The process has been realised for drinking water treatment in five full-scale plants in Germany. Results of operation demonstrate that an excellent water quality is provided at fairly low cost.

Study on the Technology for Underground Treatment of XingFu Mine Water

2013 ◽  
Vol 684 ◽  
pp. 222-225
Author(s):  
Jia Ping Wang ◽  
Tao Mei
Keyword(s):  
Water Quality ◽  
Water Treatment ◽  
Mine Water ◽  
Underground Mine ◽  
Industrial Water ◽  
Settling Pond ◽  
Mine Water Treatment ◽  
The Cost ◽  
Operation Cost

According to the XingFu mine's water quality, put forward a technology for mine water underground treatment. Changing original underground mine water sump into complex settling pond. Estimate the investment and the operation cost of the underground mine water treatment project. The result shows that: the cost of the underground mine water treatment is only 1.1172 yuan per ton, saving about 2 yuan per ton compare with the price of industrial water. This prove that it is feasible and saving for underground mine water treatment in XingFu mine.

A screening level fate model of organic contaminants from advanced water treatment in a potable water supply reservoir

2011 ◽  
Vol 45 (2) ◽  
pp. 768-780 ◽  
Author(s):  
Darryl W. Hawker ◽  
Janet L. Cumming ◽  
Peta A. Neale ◽  
Michael E. Bartkow ◽  
Beate I. Escher
Keyword(s):  
Water Treatment ◽  
Water Supply ◽  
Organic Contaminants ◽  
Potable Water ◽  
Potable Water Supply ◽  
Fate Model ◽  
Water Supply Reservoir

scholarly journals Evaluation of high rate sedimentation lab-scale tank performance in drinking water treatment

2018 ◽  
pp. 9-15
Author(s):  
Claudia Patricia Vesga-Rodríguez ◽  
Leonardo David Donado-Garzón ◽  
Monroe Weber-Shirk
Keyword(s):  
Drinking Water ◽  
Water Treatment ◽  
Potable Water ◽  
Low Cost ◽  
Drinking Water Treatment ◽  
High Rate ◽  
Upward Flow ◽  
Cornell University ◽  
Energy Dependent ◽  
Potable Water Treatment

The Cornell University AguaClara program researches ways to improve the process of potable water treatment at low cost and no energy dependent. A High Rate  Sedimentation (HRS) process that uses upward flow and less area than traditional tanks was investigated. The objective was to analyze parameters affecting HRS tank performance including velocity, density of the floc blanket and location of plate settlers in a laboratory scale HRS tank. Different velocities were set during the experiment, and the resulting performance of the floc blanket was evaluated through continuous turbidity measurements. Results demonstrated that the lab-scale tank allows the creation of a floc blanket and is a versatile design with constraints of visibility and accessibility. In addition, performance of the sedimentation tank improves at lower up flow velocities; however, the study suggests that plate settlers at the top of the tank stabilized the floc blanket at higher velocities, as a consequence of denser floc blankets created by the plates.

scholarly journals Combination of low-pressure UF membranes with conventional water treatment systems

2017 ◽  
Vol 19 (4) ◽  
pp. 584-591
Keyword(s):  
Water Quality ◽  
Drinking Water ◽  
Water Treatment ◽  
Low Pressure ◽  
Drinking Water Quality ◽  
Membrane Systems ◽  
System Combination ◽  
Treatment Processes ◽  
Water Treatment Plants ◽  
Uf Membranes

The purpose of the study was to improve drinking water quality of conventional treatment processes by combining with UF-membrane systems. Performances of two membrane systems were evaluated in two different full-scale conventional water treatment plants in Istanbul. Low-pressure UF membranes were combined after settling and filtration units of Büyükçekmece and Emirli water treatment plants. Low-pressure UF systems were operated under vacuum and pressure conditions. The experimental results indicated that combining UF systems enhanced drinking water quality with respect to turbidity, TOC and UV254 removal. In all cases, vacuum-driven UF membranes provided higher treatment performance and low energy consumption comparing to pressure-driven system. Combination with UF membranes also reduced disinfection by-products.

Sign in / Sign up

Export Citation Format

Share Document