Preparation technology filters fast of drinking water is rapidly developing Circulation
In North Water Görvälnverk Järfälla driven lots of development projects. Many of overcoming humus in the raw water. filters fast At the same time, one can get hold of parasites, bacteria, viruses, and unwanted chemical residues in drinking water. Alexander Keucken research on a filter for the water that almost resembles what the kidney is for the blood. His nanofilters stops not only organic material, but also parasites, filters fast bacteria, viruses and chemicals.
We meet Alexander at the first pilot plant which has been running for just over 1.5 years Görvälnverket filters fast at the North Water. He is everyday Development Manager at Water & Environment in the West, Vivab, in Varberg and Falkenberg. At the same time, he is a PhD student in the filter experiments.
This semi-sunny March day, it is time for cleaning of nano filters from Pentair. filters fast As so often with filter technology filters are cleaned according to several different schemes, with or without detergent. filters fast The green frothy goo that comes out shows that the filters actually stop the substances that really do not look appetizing in concentrated form.
With an approximate pore size of ten nanometers or less (for separating molecules up to 1 000 Daltons) in the pressurized filter, it is important that the calcium and magnesium do not stick as they want it in the water. The experiments have shown that it is indeed possible to maintain water hardness despite the tough filtering.
During the test period of the project Genomembran Järfälla filter has begun to be sold as a commercial product. Pentair HWF 1000 consists of a tube of meters with over 11,000 hollow and perforated spaghetti strands cast. The membrane surface in a tube is the entire 40 square meters. The material filters fast polyethersulfone, PES, is known to be resistant to mechanical and chemical action, and changing temperatures, so that it will provide long service life with high pressure and multiple cleaning cycles.
The pilot plant has recently been complemented by a broken away side project called kolpiloten. There, see how carbon works if the water is first filtered nano. Already indicated that the carbon filters stop perfluorinates (including PFOS) much better then. And the carbon is saturated not as fast as humus is reduced. The comparison is made with purified water traditionally and then passed through a sand filter.
The benefit of nanofiltration filters fast may prove to save not only traditional purification steps, filters fast but also make the carbon filter actually works as a chemical barrier, and not just as a biological degradation step. Water with less humus is easier to UV irradiation or chlorinate. filters fast
- Costs will certainly about the same as with traditional technology, filters fast but it will be safer and we can remove more unwanted stuff out of the water, says Development Per Ericsson at North Water and one of Sweden's main drinking water experts. He is a member of the steering committee for the project.
The relatively simple experimental facility, which is somewhat awkward to handle, has now been supplemented with a mobile pilot plant in a container outside the plant. There are both automatic cleaning cycles and the chemical filters fast dosages are sometimes made in connection with these. Even if Alexander can monitor plants digitally from Varberg, it's just the new facility which is also contract to run remotely. filters fast
Container plant is mobile to be moved between filters fast four water producers and the research work is divided between Alexander and the other doctoral student Angelica Lidén from Sydvatten. It is Ringsjö Agency (Eslöv), Råberga waterworks (Linköping) and Kvarnagårdens waterworks (Varberg) who will receive the honor of a nano filter visits.
An added benefit of the new nano-filters is that they can be tested so that it does not become a hole in any fiber. This is done with compressed air under a so-called Air Integrity Test, AIT. Such a test is done once a week.
The trials are not free, the budget is over five million. You can save space to invest in a full-scale plant, but the big win is more robust treatment of NOM, a treatment that also takes care of the microbiological problem.
Alexander Keuckens research is thus only one of a variety of development projects run in the North Water premises with various project owners and financiers. The goal is to find better treatment methods and might be able to end up with chemical dosages.
- Maybe also perfluorinates easier then stopped, says Kristina Dahlberg, process engineer at North Water and coordinator between the projects. From a framework of four challenges have ten different research filters fast projects started or initiated as Norrvatten operates or participates. Challenges are: climate change. Increased humus. filters fast Chemical filters fast contaminants. Microbiological contamination.
Scientists fear that climate filters fast change will increase the amount of humus, which in turn complicates filters fast the purification process filters fast of chemical and microbiological contaminants. In addition to extreme rain makes the water may get increased in
In North Water Görvälnverk Järfälla driven lots of development projects. Many of overcoming humus in the raw water. filters fast At the same time, one can get hold of parasites, bacteria, viruses, and unwanted chemical residues in drinking water. Alexander Keucken research on a filter for the water that almost resembles what the kidney is for the blood. His nanofilters stops not only organic material, but also parasites, filters fast bacteria, viruses and chemicals.
We meet Alexander at the first pilot plant which has been running for just over 1.5 years Görvälnverket filters fast at the North Water. He is everyday Development Manager at Water & Environment in the West, Vivab, in Varberg and Falkenberg. At the same time, he is a PhD student in the filter experiments.
This semi-sunny March day, it is time for cleaning of nano filters from Pentair. filters fast As so often with filter technology filters are cleaned according to several different schemes, with or without detergent. filters fast The green frothy goo that comes out shows that the filters actually stop the substances that really do not look appetizing in concentrated form.
With an approximate pore size of ten nanometers or less (for separating molecules up to 1 000 Daltons) in the pressurized filter, it is important that the calcium and magnesium do not stick as they want it in the water. The experiments have shown that it is indeed possible to maintain water hardness despite the tough filtering.
During the test period of the project Genomembran Järfälla filter has begun to be sold as a commercial product. Pentair HWF 1000 consists of a tube of meters with over 11,000 hollow and perforated spaghetti strands cast. The membrane surface in a tube is the entire 40 square meters. The material filters fast polyethersulfone, PES, is known to be resistant to mechanical and chemical action, and changing temperatures, so that it will provide long service life with high pressure and multiple cleaning cycles.
The pilot plant has recently been complemented by a broken away side project called kolpiloten. There, see how carbon works if the water is first filtered nano. Already indicated that the carbon filters stop perfluorinates (including PFOS) much better then. And the carbon is saturated not as fast as humus is reduced. The comparison is made with purified water traditionally and then passed through a sand filter.
The benefit of nanofiltration filters fast may prove to save not only traditional purification steps, filters fast but also make the carbon filter actually works as a chemical barrier, and not just as a biological degradation step. Water with less humus is easier to UV irradiation or chlorinate. filters fast
- Costs will certainly about the same as with traditional technology, filters fast but it will be safer and we can remove more unwanted stuff out of the water, says Development Per Ericsson at North Water and one of Sweden's main drinking water experts. He is a member of the steering committee for the project.
The relatively simple experimental facility, which is somewhat awkward to handle, has now been supplemented with a mobile pilot plant in a container outside the plant. There are both automatic cleaning cycles and the chemical filters fast dosages are sometimes made in connection with these. Even if Alexander can monitor plants digitally from Varberg, it's just the new facility which is also contract to run remotely. filters fast
Container plant is mobile to be moved between filters fast four water producers and the research work is divided between Alexander and the other doctoral student Angelica Lidén from Sydvatten. It is Ringsjö Agency (Eslöv), Råberga waterworks (Linköping) and Kvarnagårdens waterworks (Varberg) who will receive the honor of a nano filter visits.
An added benefit of the new nano-filters is that they can be tested so that it does not become a hole in any fiber. This is done with compressed air under a so-called Air Integrity Test, AIT. Such a test is done once a week.
The trials are not free, the budget is over five million. You can save space to invest in a full-scale plant, but the big win is more robust treatment of NOM, a treatment that also takes care of the microbiological problem.
Alexander Keuckens research is thus only one of a variety of development projects run in the North Water premises with various project owners and financiers. The goal is to find better treatment methods and might be able to end up with chemical dosages.
- Maybe also perfluorinates easier then stopped, says Kristina Dahlberg, process engineer at North Water and coordinator between the projects. From a framework of four challenges have ten different research filters fast projects started or initiated as Norrvatten operates or participates. Challenges are: climate change. Increased humus. filters fast Chemical filters fast contaminants. Microbiological contamination.
Scientists fear that climate filters fast change will increase the amount of humus, which in turn complicates filters fast the purification process filters fast of chemical and microbiological contaminants. In addition to extreme rain makes the water may get increased in
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