Submitted by: Rücker GmbH
Implemented country: Germany
Title: Wastewater utilization Aurich
The dairy operation Rücker GmbH, Aurich disposed of the daily generation of waste production Aurich with year-round temperatures of 30 to 35 ° C on a separate line pressure in the municipal sewage plant in the city. When renewing a substantial portion of this section line pressure resulted in the possibility to change the course so that the construction of an inner-city location for a Wärmeübertragerstation using structural synergy was economically justifiable. This was the essential precondition of the use of the above Heat given potential, in which the amount of heat through heat exchangers, a so-called cold district heating circuit and heat pumps can be fed to the consumer. As a consumer, should ideally provide heat consumers in the temperature range 55 ° C/45 ° C (forward / reverse) on. These are preferably mostly public buildings that need this low-temperature heat for heating large areas or in the optimal case, swimming and leisure pools with hot water. These properties are in Aurich with the 2nd Quarter of 2009 completed Savings Bank Arena (multi-function convention center), the planned opening in 2012, all-weather bath and other users present. The plan provides for the use of a wastewater temperature in the annual mean of 32 ° C, cooling to a maximum of 20 ° C to 12 ° C would therefore be minimal. Thus, the maximum usable heat output of 900 kW in total. With an annual performance factor of 4.5 for the heat pump system can thus withdrawn from the 700 kW and 200 kW sewage pumps are provided as a service.