| 摘要 |
A method for reducing the content of oxidizable dissolved materials in groundwater, by introduction of oxygen-enriched water into a groundwater conduit and using at least three springs (3, 4, 5) alternately as absorption, transport and absorption streams, involves subjecting a partial stream of groundwater (extracted via the transporter stream) to primary oxygen enrichment while the main extracted stream is passed through a water-water heat pump (2), subjected to secondary enrichment with oxygen and returned to the groundwater line using the absorption stream. A method for reducing the content of oxidizable dissolved materials in groundwater, by introduction of oxygen-enriched water into a groundwater conduit, involves an initiation phase in which two of at least three springs (3, 4, 5) are used alternately as transport and infiltration streams. Groundwater is extracted from the groundwater line via the transporter stream, a partial stream from which is subjected to primary oxygen enrichment (29) and infiltrated into the groundwater stream via the infiltration stream while the main stream is simultaneously passed through a water-water heat pump (2) for heating and/or cooling purposes to adjust the contained thermal energy. Secondary enrichment with oxygen (6) is carried out before and/or after the heat pump in the flow direction, and the stream is returned to the groundwater line using the third spring (serving as an absorption stream). In the following permanent operation phase, after adequate oxidizable material removal in the water transported in the absorption stream, the functions of the springs are interchanged such that the each spring successively functions as absorption, transport and absorption stream. Between the functions as absorption and transport streams a phase for a sufficient time is provided for temperature equilibration of the groundwater line in the region of each spring. An independent claim is included for apparatus for carrying out the process, comprising a plant (1) for underground iron and/or manganese removal using oxygen-enriched water, a water-water heat pump (2) and a secondary oxygen enrichment device (6) (upstream and/or downstream of the heat pump), such that water flowing through the heat pump is enriched water then recycled using the absorption stream. |
