The company Biond operates and develops one of the country’s largest waste management sites and biogas production plants just outside the city of Helsingborg. This Biond plant has a capacity of about 150,000 tonnes of organic waste per year. Biond provides biogas and liquid bio-fertiliser to the Swedish transport sector and Swedish agriculture.
The liquid biofertiliser is certified according to SPCR 120, which means, among other things, that visible impurities should not exceed 10 cm²/kg of liquid biofertiliser.
Biond could not meet these requirements until it opted for a Lackeby Roto-Sieve drum screen type RS 36. Roto-Sieve drum screen not only strain waste waters or process waters, but also strain other liquids just as well.
Drum screen removes impurities from liquid manure
On the advice of Purac, Biond chose a Lackeby Roto-Sieve drum screen RS 36. Purac installed this drum screen in 2020. Since then, the measured value of visible pollutants after the Roto-Sieve drum screen is now close to zero! Most of the separated material from the bio-fertiliser consists of plastic and straw. This material is then treated in the incinerator.
This application is a great illustration of the versatility of Roto-Sieve drum screens. Roto-Sieve drum screens provide effective screening of wastewater and process water. In addition, Roto-Sieve drum screens can also handle a wide range of liquids (e.g. oil).
