Description: technologyComment of water production, deionised (Europe without Switzerland): The process includes an anionic resion or combined cation/anion exchange resin. The unit is operated with counterflow regeneration. Obtained water quality: about 1-0.1 uS/ cm for the conductivity and a silica content (as SiO2) of 5-25 ug/l. For the water source, tap water from a public supply with a total hardness of 1.71 mol/m3 (range 0.7 - 3.2) was assumed. Reference: Althaus H.-J., Chudacoff M., Hischier R., Jungbluth N., Osses M. and Primas A. (2007) Life Cycle Inventories of Chemicals. ecoinvent report No. 8, v2.0. EMPA Dübendorf, Swiss Centre for Life Cycle Inventories, Dübendorf, CH.
Types:
Text {
text_type: Report,
}
Comment: This is a market activity. Each market represents the consumption mix of a product in a given geography, connecting suppliers with consumers of the same product in the same geographical area. Markets group the producers and also the imports of the product (if relevant) within the same geographical area. They also account for transport to the consumer and for the losses during that process, when relevant. This is the market for 'water, deionised', in the geography of Europe without Switzerland. The water, deionised is consumed in the same place as it is consumed. That is why regional market activities are in this case adequate. water, deionised' is an inorganic substance with the CAS no. : 007732-18-5. It is called 'dihydrogen oxide' under IUPAC naming. It is characterised by being free of most mineral ions (such as iron, sodium, calcium, copper, sulphate, chloride among others). Its molecular formula is: H2O. It is liquid under normal conditions of temperature and pressure. It is modelled as a pure substance. There is no publicly available information about the consumption of this substance on a consumer level. On industrial sites, the substance is used for the manufacture of products in the following sectors: cooling systems, machines lubrication, cosmetic and pharmaceutical, medicine production and food processing. This market is supplied by the following activities with the given share: water production, deionised, Europe without Switzerland: 1.0 generalComment of water production, deionised (Europe without Switzerland): This dataset represents the production of 1 kg of deionised water, delivered at the user, by ion exchange. This dataset is a copy of the GLO deionised water production dataset. Deionised (DI) water, also known as demineralized water has become an essential ingredient in many applications as is water that has had almost all its mineral ions removed (such as iron, sodium, calcium, copper, sulphate, chloride among others). It is typically used in cooling systems, machines lubrication, cosmetic and pharmaceutical sectors, medicine production, food processing and countless other industrial processes. The quality of water needed in the different applications varies considerably. E.g., the conductivity (used as quality parameter) for demineralised water is 1-10 μS cm-1. Such water is used as boiler feed water for boilers up to 30 bar pressure. On the other hand, the conductivity of completely demineralised water is in the range of 0.055-1.0 μS cm-1. The purest water is used within the waver and electronic circuit production. For the process analysed in this inventory the production plants includes an strong type anionic resion or combined cation/anion exchange resin. Such systems obtain, by operation with counterflow regeneration. The ion exchanger resin is essential throughout the operation of the system; large amounts of salt may be necessary for regenerationing it. Energy usage is required for pumping and mixing. Large uncertainties exist due to the influence of raw water quality and operation mode on the regeneration chemical demand and electricity used. Reference: Althaus H.-J., Chudacoff M., Hischier R., Jungbluth N., Osses M. and Primas A. (2007) Life Cycle Inventories of Chemicals. ecoinvent report No. 8, v2.0. EMPA Dübendorf, Swiss Centre for Life Cycle Inventories, Dübendorf, CH. de Dardel, F. and Arden, T. V. 2008. Ion Exchangers. Ullmann's Encyclopedia of Industrial Chemistry. [This dataset is meant to replace the following datasets: - water production, deionised, from tap water, at user, Europe without Switzerland, 1992 - 2002 (824e7e4e-d525-44a1-8fa7-1aece4a7efb6)]
Origin: /Bund/UBA/ProBas
Tags: Siliziumdioxid ? Schweiz ? Chemikalien ? Leitfähigkeit ? Trinkwasser ? Wasserqualität ? Wasser ? Europa ? Harz ? Water collection, treatment and supply ? Water supply; sewerage, waste management and remediation activities ?
License: unbekannt
Language: Deutsch
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