Intelligent sludge drying
SPANGLER – the Plus of Data Consistency.
Innsbruck is a trendy winter sports centre, student city and Austria’s fifth largest populated area. There, SPANGLER has accompanied the extension of the municipal wastewater treatment plant, which energy-efficiently cleans the wastewater of the region and thus provides capacities for further population growth.
Six HUBER sludge dewatering machines which had been put into operation by SPANGLER a few years earlier were the basis for the interpretation. In addition, the sludge dewatered by these machines is further reduced of humidity in a dryer. For this SPANGLER automated a belt dryer HUBER BT16. For the control it was almost exclusively relied on Siemens components with bus interface. The operator benefits from the fact that the data consistency is secured and that the plant can be accessed via remote maintenance at any time. Therefore, in addition to programme updates, our employees are also able to process service cases from a distant location.
Central collection point
The machine and process sequence was programmed with the software Siemens TIA Portal. The visualisation and operation is done via two IPCs installed in the control systems. A camera with its own monitor and remote access supports the operator with the monitoring of the sludge supply to the dryer. In addition, the data connection of the belt dryer to the already existing control system of the wastewater treatment plant is made via the protocol OPC-DA. The SPANGLER solution also functions as collection point for data of other trades such as the dry sludge silo, the hot water plant or the sludge dewatering plant.
Extended specification sheet
Before starting the project, an extended specification sheet was formulated which describes not only the required electrotechnical functions but also the procedural way of proceeding. This is why our programmers could solve open questions nearly without consulting the process engineer. Therefore, HUBER and SPANGLER could fulfil the demand of a fast implementation.