Mäntsälän Biovoima service description

Mäntsälän Biovoima receives biowaste on weekdays from 8 am to 4 pm. We separately authorise trained drivers to operate outside working hours when required. Waste delivered on pallets is handled only on weekdays.

For waste transport, we require customer details and information about the haulage company and vehicles for weighbridge registration. Our certified weighbridge provides the basis for commercial transactions.

We treat waste in accordance with permit requirements and provide our customers with certificates of destruction. We upgrade the biogas produced from the waste into biomethane to replace natural gas. We supply the residual material to local farmers as organic fertiliser.

Permitted and prohibited contaminants in material for treatment

For the biogas plant pretreatment line to operate properly, contaminants in incoming material are restricted as specified in the table below.

Waste streams containing contaminants above the limits specified in the table must not be unloaded from transport vehicles into the plant reception tanks.

Contaminant or harmful object	Quantity	Unit	Note
Hard inorganic material – Particle size less than 20 mm – Sand, gravel, glass, ceramics, eggshells, etc.	25	kg/tonne	Wet weight
Plastics, cardboard, paper, food cans and other food industry packaging materials	100	kg/tonne	Wet weight
Hard inorganic material – Particle size ≥ 20 mm – Stone, ceramics, metals, etc.	None permitted*
Other large and/or hard materials – Tools, construction materials, drill bits, etc. – Large packaging such as complete bulk bags, roll cages or packaging pallets	None permitted*
Organic material unsuitable for biogas production or requiring other pretreatment – Stumps, thick branches – Horns, large quantities of hooves or claws – Whole hay bales, whole energy crops (reed canary grass, hemp, etc.).	None permitted*
Hazardous or harmful chemicals and hazardous waste – Solvents, acids, alkalis, detergents, adhesives, etc.	None permitted
– Fire retardants, materials containing heavy metals, etc.
Explosive or radioactive substances	None permitted
Elongated materials that can cause entanglement – Ropes, films, wires, cables, hoses, etc.	None permitted*

In practice, separately collected biowaste in particular may contain small amounts of the materials listed above. The pretreatment line can tolerate small quantities. However, these materials must not knowingly be fed into the process.