[This dataset was already contained in the ecoinvent database version 2. It was not individually updated during the transfer to ecoinvent version 3. Life Cycle Impact Assessment results may still have changed, as they are affected by changes in the supply chain, i.e. in other datasets. This dataset was generated following the ecoinvent quality guidelines for version 2. It may have been subject to central changes described in the ecoinvent version 3 change report (http://www.ecoinvent.org/database/ecoinvent-version-3/reports-of-changes/), and the results of the central updates were reviewed extensively. The changes added e.g. consistent water flows and other information throughout the database. The documentation of this dataset can be found in the ecoinvent reports of version 2, which are still available via the ecoinvent website. The change report linked above covers all central changes that were made during the conversion process.]
Large uncertainties exist due to influence of raw water quality and operation mode on regeneration chemical demand and electricity used.
Production volume: 7837750000000 kg
Included activities end: Energy for operation, chemicals used for regeneration, transport of chemicals to plant, emissions from regeneration chemicals, infrastructure of plant and replacement of spent exchane resin. Process does not include very small units (cartridges) or very large units with >>100 m3/h (power stations). Other production methods as reverse osmosis electrodialysis or distillation are not covered with this process (only ion exchange).
Energy values: Undefined (default)
Geography: Data mainly from european producers but also from Literature and U.S. companies. Raw water data from Switzerland (drinking water of Zurich and Basel). For electricity demand swiss supply mix used.
Technology level: 3 Current (default)
Technology: Process includes a strong cation exchanger a degasser and a strong anion exchanger. unit is operated with counterflow regeneration. Obtained water quality about 1 uS/cm for the conductivity and a silica content (as SiO2) of 5-25 ug/l. As water resource tap water from a public supply with a total hardnes of 1.71 mol/m3 (range 0.7 - 3.2) was assumed. No lime decarbonation as pre treatment is used.
Start date: 1992-01-01
End date: 2014-12-31
Is data valid for entire period: true
Time period: Time of literature publication. Measurements took place partly before this period.
Macro-economic scenario name: Business-as-Usual
Version: 3.0.96.1
Created: 2010-07-28T18:32:52
Source: 5bb79b40-273e-4878-9ede-d09d60aabac1_360e2eb0-f81c-4e4b-ba6b-c7a690f31275.spold