Case

AVK knife gate valves used in biogas plant for slurry pipe system

Degassing slurry efficiently yields better fertilizer as well as less odour and environmental impacts.

A Danish farmer responsible for operating a pig farm has recently invested 14 million Dutch Krone into a piping system for their biogas facility to transport slurry from local farms to biogas facility and then back to the fields where degassed slurry will be evenly distributed over the land. To ensure the slurry is distributed evenly across the land, knife gate valves have been installed on the manifolds that connect the farm and the biogas plant, automated control of these valves means the slurry can be pumped in both directions. 

Pipe system for transporting slurry reduces traffic load 

Farms that are now connected by the slurry pipe system can now enjoy efficient operation and cost savings via even distribution of degassed slurry meaning tankers no longer need to ferry between properties to move bio waste. 

10 farms are connected by approximately 20km of pipeline, at the centre is a pumping station and the biogas plant which is capable of processing upwards of 160,000 tonnes of slurry every year working efficiently to reduce the strain on traffic load. 

Degassing results in less impact on climate and less odour nuisances

The process of degassing slurry is starts by pumping it from the farms to the biogas station. It is processed and then pumped back to the farms to be stored in tanks for distribution. By processing the slurry farmers are given the benefit of natural material to fertilize the land, subtract the harmful effects of unprocessed slurry, including methane emissions and mitigating odours. The Co2 emitted by the slurry is incredibly harmful to the environment and contributes to climate change. 

AVK delivers pipe system with 26 pcs. DN200 knife gate valves

The pipe system is dimensioned with 200 mm PE pipes with a maximum pressure rating of an outstanding 10 bar. Vatech 2000 has delivered 26 pcs. DN200 AVK knife gate valves with LINAK actuators (incl. motor/signal cables) toward the project. Electrical actuators were utilised in the project because the valves are installed over a vast amount of land and allow for feedback modules, which give farmers an overview of the actuator settings.

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