| 摘要 |
<p>The method according to the invention of treating water in which water is separated from a retentate by means of filtration through at least one membrane (3), wherein the water, on filtration, flows through the membrane (3) in a permeation direction, wherein at least one membrane (3) is, at least at times, flushed by a flushing stream (8) in a direction essentially opposite to a permeation direction, is characterized in that gaseous carbon dioxide (CO2) is added to the flushing stream (8). The method according to the invention advantageously permits the cleaning of membranes (3), for example in wastewater treatment systems (1), which, for example, carry out activated sludge separation. By means of the method according to the invention, the intervals between two backwashing processes can be significantly increased. This increases the profitability of the corresponding systems, since the operating times of the corresponding wastewater treatment systems (1) are increased and the intervals between backwashing processes and physicochemical cleaning of the membranes (3) are decreased.</p> |
