Three pasteurization systems made by Landia are helping Shropshire Energy produce 2.5MW of renewable energy at its AD plant in Littleport, Cambridgeshire.
Designed as a free-standing unit that heat-treats organic waste so that the resulting thin substance can be used as an energy-efficient substrate, each 3 x 8m3 pasteurizer at Shropshire Energy is fitted with an 11kW Landia Chopper Pump and a PODTR-I 7.5kW Landia side-entry propeller mixer.
Organic waste received at 40oC is liquefied, then heated to 70degC, before the pasteurized matter is pumped back out as a valuable raw material in closed pipes by one highly efficient process to a buffer tank and then separator. The finished digestate (8% dry solids) is BSI pas110-approved for use as a nutrient-rich fertiliser.
Paul Davies from Landia commented: “The pasteurizers work quietly and very efficiently, with quick batch times for the 100,000 tonnes-plus pa of organic waste that is processed. The pasteurizers’ pump and mixer are very reliable, meaning no downtime”.
Any surplus electricity generated from the AD operation is fed back to the national grid to power nearby homes and businesses.