WELTEC bolsters its activity in the Japan market

German biogas specialist WELTEC BIOPOWER has strengthened its presence in Japan, following an order for a 450-kilowatt plant from the agricultural sector as well as a 250-kilowatt biogas plant in Yamagata Prefecture.
This is in addition to WELTEC BLUE WATER treatment, which is currently being implemented.
Furthermore, a 450-kilowatt plant for a pig farm near Nagano Prefecture is currently being planned.
The company said that, due to its many years of project experience in earthquake zones such as Japan and Greece, it is able to adapt its technical solutions to seismically active areas by using special structural engineering.
Two digesters are available in Yamagata Prefecture to feed the 80 tons of cattle manure per day, which is used exclusively to generate electricity and heat in the 250-kilowatt plant.
WELTEC‘s scope of supply includes two storage tanks, a pump container, a separation unit and the combined heat and power plant (CHP).
In addition to the biogas project, a WELTEC BLUE WATER plant with a processing capacity of 50,000 tons of digestate (manure and wastewater from milk production) per year is currently being constructed.
The treatment technology separates the digestate from the biogas plant in a multi-stage process into solid and liquid fertiliser and dischargeable water.
The resulting solid phase offers a wide range of marketing options, such as use as fertiliser in the field or as bedding in stables.
This enables the operator to make additional savings on transport costs by reducing the volume of the source material.
The distribution of output materials varies depending on the dry matter content of the fermentation residue.
In this project, the amount of solid fertiliser is around 3%, the nutrient concentrate 29% and the water 68%.
From 2025, the operators of the 450-kilowatt plant will be filling a mix of 18 tons of cattle manure and food waste from the surrounding area into their digesters every day.
WELTEC‘s modular digester system makes it possible to individually adapt the diameter and height to meet customers‘ volume requirements or local building regulations, such as height restrictions.
Instead of the usual height of 6.30 m, the digesters have been adapted to a height of 5.03 m.
At both plant locations, the electricity is fed into the grid and the heat is utilised for efficient fermentation in the digesters.
The fermentation residue from the 450-kilowatt plant is processed in sewage treatment plants near the sites before being used as fertiliser.
A further plant is currently being planned in Nagano Prefecture. The height of the digester is also adapted as a special solution to 05.03 meters and equipped with a capacity of 450 kilowatts.