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Published05/11/2024
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Deadline02/12/2024
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Today08/12/2024
Utilities
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Renewal of the excess sludge thickening and digestion sludge drainage centrifuge at the Seesen wastewater treatment plant - general planning of civil engineering structures Text automatically translated in your browsing language Automatically translated
The city of Seesen operates the sewage treatment plant Seesen with an expansion size of currently 36,000 inhabitants via its own operation "Wastewater disposal city Seesen". The incoming wastewater is treated in the sewage treatment plant after the mechanical cleaning stage with pre-treatment in a multi-stage aeration plant. The resulting excess sludge is currently machine-thickened with a thickening centrifuge (built in 1989, KHD) and then anaerobic treated together with the statically pre-thickened primary sludge. The resulting digestive sludge is drained with a drainage centrifuge (built in 2006, Hiller). The conditioning with polymeric flocculants takes place for both processes from a processing plant. Despite regular maintenance and repair work on the systems, age-related failures or long-term repairs cannot be ruled out. Therefore, the wastewater disposal city of Seesen intends to renew the mechanical surplus sludge thickening and digestate sludge watering. As part of a study developed by the engineering office Dr. Denkert, the stipulations were made to continue to use a thickening centrifuge for excess sludge thickening and to continue to use a dewatering centrifuge in the field of digester sludge watering. The new plant is to be built in the same building where the previous machine technology is housed. The appropriate location within the building must be examined in advance, the proposals from the study can be a solution, but are not binding, but are to be considered as possible variants. Due to the existing infrastructure on the existing site, a transport connection or preparation of the outdoor facility will only be necessary to a small extent. Should it become apparent in the medium term that the disposal of waste water by the city of Seesen has to move from agricultural recovery of the sewage sludge to thermal recovery, any changes in the area of outdoor facilities would have to be made and taken into account. However, as things stand, this is not part of the measure. The eligible costs for fitting out and development (cost group 200 in accordance with DIN276) are allocated to the project planning of civil engineering structures. According to HOAI, § 4(3), the scope and value of the building material to be co-processed must be determined at the time of the cost calculation or, if no cost calculation is available, at the time of the cost estimate. Text automatically translated in your browsing language Automatically translated
https://www.dtvp.de/Satellite/notice/CXP4Y4VHWSN
https://www.dtvp.de/Satellite/notice/CXP4Y4VHWSN
71300000 - Engineering services
71331000 - Drilling-mud engineering services
90000000 - Sewage, refuse, cleaning and environmental services CVP code deduced from the text of the procedure AI-generated
71320000 - Engineering design services CVP code deduced from the text of the procedure AI-generated
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