annually ( 150,000 USG per day ), with some flexibility to incorporate future increases in herd size .
Efficient Biomass Processing and Energy Output
The facility employs a streamlined process flow , with manure fed from the barns into a 1,543 cubic meter ( 408,000 USG ) stainless steel pre-storage tank before being pumped into the digesters . The digestion system has a retention time of 34 days , before the biogas is upgraded in a membrane-based system ( specified , purchased and integrated into the central SCADA system under WELTEC BIOPOWER contract ) into high-quality RNG at gas grid specifications . Digestate is pumped from the RNG plant to the existing lagoons . WELTEC BIOPOWER designed and supplied key components for the project , including digesters , a prefabricated containerised pump-block system , heating and boiler containers and a prefabricated factory-tested control container to simplify works on site , enhance the fast construction time and ensure optimal operational efficiency .
By utilizing biomethane as a fuel source , the dairy achieves substantial environmental benefits , reducing carbon emissions by approximately 11,200 tonnes of CO2 equivalents annually . Additionally , the plant owners capitalize on financial incentives such as RNG tax credits and fuel tax allowances . This project ( particularly the strongly negative RNG , the fast construction time and the relatively low CAPEX for such a project ) is a great example of the huge potential that still exists for biogas / RNG development at some of the smaller dairy farms in the USA . Projects like this have a key part to play in de-carbonising North American agriculture , and de-carbonising US truck fleets . With the successful implementation of this dairy RNG project , WELTEC BIOPOWER continues to drive innovation , quality and costeffective solutions for dairy RNG developers , as well as continuously developing market-leading expertise in the co-digestion market .
You can also see this video about the biomethane plant in Barron County , Wisconsin :
Company Portrait
Since its foundation in 2001 , the WELTEC Group from Vechta in Lower Saxony , Germany , has been contributing to the success of the energy transition . The specialist has developed into one of the world ‘ s leading providers for the construction and operation of biogas and biomethane plants . The group covers the entire biogas value chain , including the design , planning and setup of energy plants , services , sustainable utilization concepts for the output flows and ongoing or temporary plant operation – an area in which it has more than 15 years of experience .
The establishment of individual , technically mature solutions with custom-tailored processes is one of the strengths of WELTEC BIOPOWER . Moreover , the use of stainless-steel technologies ensures flexible substrate input , quick and inexpensive assembly and a consistently high quality standard , regardless of the location . Following the go-live , WELTEC can take care of the mechanical and biological service in order to ensure efficiency of the plants .
Savings through CO2 equivalents and tax benefits https :// www . youtube . com / watch ? v = NquqS1CxceU
For WELTEC , proximity to customers and investors is very important .
With a diameter of 31.48 meters , the 8.8 meter high , insulated stainless steel tanks each have a gas storage volume of 3320 cubic meters .
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