GEMÜ Valves used for Boron Decontamination in Drinking Water Applications
Key points
The application
According to the WHO a boron content of >0.5 mg/l in drinking water is harmful. In addition, it has been shown that too high a boron content in water used for the irrigation of plants can also be harmful to humans and animals when these are consumed.
Boron therefore presents a new challenge in the treatment of drinking water in addition to the previously known pollutants. In this trend-setting and successful application, GEMÜ valves are used in the water treatment plant.
Brackish water from the coastal region is available as raw water. The amount of drinking water to be treated daily is 6,500 cubic metres. The boron content in the raw water is available as boric acid at an amount of 1.0 – 2.5 mg/ per litre.
The system technology
The brackish water first passes through various filtration stages to separate sand, plant and animal components. The filtered raw water is then passed on to an ion exchanger to which a stage for boron has been added. Then the water gained from this runs through reverse osmosis and is brought up to drinking water quality.
The system is designed so that a second system guarantees continuous treatment during the regeneration of the ion exchanger and the filters. The additional ion exchange stage for the boron is based on a polystyrene resin and a methylclucamin compound (amino acid + sugar complex) serves as an anchor group. The boron is bound to the sugar complex. The resin is regenerated by sodium hydroxide.
The solution
The whole system is pneumatically automated and equipped with diaphragm valves from the GEMÜ 690 series made of polypropylene (PP) and GEMÜ 620 with PP-lined S.G. iron bodies. The valves are extremely robust, insensitive to untreated media and very suitable for increased cycle duties.
Unlike butterfly valves, diaphragm valves do not need to be removed from the pipe for maintenance and repairs so that operation is guaranteed under difficult conditions in the long-term with a low service requirement. GEMÜ diaphragm valves are also used in the control circuits.
The modular GEMÜ principle makes it is easy to mount a GEMÜ 1435 digital electro-pneumatic positioner. Apart from the simple assembly, the device is also easy to operate and quickly ready for use thanks to its self-calibration.
The robust, surface-coated alloy housing of the controller enables it to be used under even the harshest environment conditions. Another advantage of the GEMÜ 1435 positioner is that the valve position is transmitted by an electric sensor and the device has no external mechanical parts which may be sensitive to dirt or sand.
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Tel: 01925 824044
Email: enquiries@gemu.co.uk
Web: www.gemu.co.uk
GEMU Valves Ltd
- +441925824044
- customer.support@gemu.co.uk
- http://www.gemu.co.uk
- 10 Olympic Way Birchwood Warrington Cheshire WA2 0YL GB
About us
GEMÜ is a world leading manufacturer of valves, measurement and control systems for liquids, vapours and gases, especially when it comes to solutions for sterile applications. The GEMÜ Group currently employs over 1900 members of staff worldwide.
Manufacturing is carried out at six manufacturing sites across Germany, Switzerland, China, Brazil, France and the USA. The Group is active on all five continents with 27 subsidiaries and has a large distributor network in more than 50 countries
With the increasing requirements for process engineering, we offer a wide range of products providing solutions for a broad spectrum of customer groups, such as:
Specialising in all of the processes involved in the pharmaceutical, biotechnology, cosmetics, food and beverage industries. Application brochure: Solutions for the pharmaceutical, foodstuffs and biotechnology industries.
Specialising in industrial water treatment, chemicals, processing industry, surface finishing, power generation and environmental engineering. Application brochure: Solutions for industrial applications.
Focusing on valves for the production of semiconductors and microchips, photovoltaic systems and batteries, and ultra-high-purity chemicals. Application brochure: Solutions for microelectronics, semiconductors and battery production.
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Training courses for service and maintenance personnel, repair services and the commissioning of GEMÜ products directly at the customer's site.
GEMÜ GB is based in Warrington providing product sales and technical support. Our product quality, application knowledge and broad range of services, make us a market leader in our field within the UK.
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Where we supply to
UK Ireland
Industries we supply to
Chemicals, Food and Beverage, Pharmaceutical Cosmetics Toiletries, Water and Wastewater
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