RETERRA GmbH is a wholly owned subsidiary of the Remondis Group, one of the world's largest service providers for recycling, service and water. It recycles organic waste and uses it to produce high-quality compost, fertilizer and renewable electricity.
KRIKO has been looking after the automation systems at RETERRA in Freiburg for some time now. Due to the good cooperation, it was selected as a partner for the new biomass fermentation plant at RETERRA in Singen/Hohentwiel. The biogas plant in Singen processes 50,000 tons of biowaste per year from various districts in Baden-Württemberg. The electricity production amounts to approx. 16-18 million kWh / year.
Requirements for KRIKO:
Automation and electrical planning of the biomass fermentation plant
Parallel integration of 18 trades to achieve the intended goal
Precise coordination of the installation and commissioning times
Start of production before 31/12/2018 in order to receive the full subsidy from the EEG law
Short project planning and construction period of 12 months from rough planning to commissioning
The KRIKO solution
Together with the Reterra employees, KRIKO took over the automation and electrical planning and implemented the integration of 18 subcontractors into the higher-level Siemens WinCC control system. In order to achieve high availability of the plant technology, a fiber optic network was set up as a redundant ring. The subcontractors' systems were connected via this network to the two Siemens S7-1500 central control systems, which manage the coordination and monitoring of the auxiliary systems, the operation of the biomass reactor and the two CHP units, among other things. KRIKO was also responsible for supplying and commissioning the measurement technology.
In order to optimize the process flow and document the production parameters, Reterra also relies on the proven KRIS³ process data acquisition system from KRIKO for this plant.
In the final meters, it was all the more important to coordinate the installation and commissioning work precisely despite the sometimes adverse circumstances. By the end of 2018, the successful generation of electricity from 100% organic waste and the feed-in of the first 6 MWh of electrical energy into the public power grid could be reported.
The entire plant is now running reliably in automatic mode. It is achieving new monthly record figures for electricity production. A complete success for Reterra, KRIKO and the environment.
Why with KRIKO
Benefits for the Customer
Short project planning and construction period: Thanks to a trustful and uncomplicated cooperation, it was possible to realize the short
project planning and construction period.
High availability of the system technology: The new control and instrumentation technology ensures availability.
Use of KRIS process information system: Optimization of the process flow and documentation of production parameters with KRIS.
Technologies Used:
Siemens WinCC control system
Fiber optic network as redundant ring
Siemens S7-1500 control systems
Measurement technology
KRIS3 process information system
Highlights
The project in figures
The biogas plant in Singen processes 50,000 tons of biowaste per year
Electricity production amounts to approx. 16-18 million kWh / year
Generation of electricity from 100% biowaste
Feed-in of the first 6 MWh of electrical energy into the public grid
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![[Translate to English:] Reterra Biomassevergärung](/fileadmin/bilder/assets/reterra-Biomassevergaerung.jpg "[Translate to English:] Reterra Biomassevergärung")
![[Translate to English:] SIMATIC S7-1500](/fileadmin/bilder/fotos_mittelteil/Reterra-Technologien.jpg "[Translate to English:] SIMATIC S7-1500")