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Image text: "Horse Manure Biogas Plants".

Horse Manure Biogas Plants

Horse manure biogas plants are facilities where horse manure is degraded by microorganisms such as bacteria and archaea to produce methane-rich biogas. This gas can be used to generate electricity or heat, or it can be used as a transportation fuel.

Horse manure biogas plants are a relatively new technology, but they are becoming more common as the need to find renewable sources of energy increases. There are a number of benefits to using horse manure to generate energy, including the fact that:

  • it is a renewable resource,
  • it can help to reduce greenhouse gas emissions, and
  • it can be used to generate both electricity and heat.

The Potential

Horse manure biogas plants are a promising new technology that can even help to address a number of environmental issues beyond those already mentioned.

A horse can generate up to 50 kg of dung per day. With approximately 1.2 million horses in Germany alone, this is a massive amount.

One horse's daily amount of manure, together with the bedding material, has 30 kWh energy, which equals three litres of fuel oil. via www.haiqiwastegasifiers.com.

So, utilising horse manure in energy production is an important element in the future circular economy. Rarely does an opportunity come along like this one that can positively touch on energy, water, air, soil, food, jobs, and education simultaneously.

Not only has the animal itself become an economic factor, but so will its dung be, in the years to come.

Biogas is produced by fermenting animal manure and other organic waste materials, which are then converted into electricity and heat during the combustion process in a combined heat and power plant. The horse manure biogas plant can efficiently work from thermal, electrical, and mechanical energy to ensure that your farm or equestrian company's energy bill costs are reduced. You can use the output (digestate) as an organic fertiliser on your farms to add more hydrogen to your soil.

This enormous potential is currently underutilised in terms of energy generation: Along with energy, a natural organic fertiliser with high plant availability is also created.

Image text: "Horse Manure Biogas Plants".

Muckbuster SEAB MB400 Digester

The Muckbuster® digester unit has been suggested as a solution in a Swedish Technical Paper for turning slurry and similar farm waste into energy in the form of electricity and heat, whilst generating high-value fertiliser as a by-product.

Muckbuster SEAB MB400

The following is an archived article first published here in September 2018, which is still relevant today:

German Horse Manure Biogas Plant Re-Commissioning of AD Plant by Weltec

AD Plant contractor and operator Weltec Biopower has stepped in to update and overhaul/ re-commission a failed Horse Manure Biogas Plant, which was a previously horse manure AD plant (HMAD), located in North Germany.

WELTEC BIOPOWER horse manure German AD Plant Suedergellersen
WELTEC BIOPOWER takes on horse manure at German Biogas Plant, Südergellersen.

This is the first time that we have heard of dedicated horse manure anaerobic digestion plant. Nevertheless, you can be certain that quite a number of AD plants accept horse manure as a feedstock, so it is not immediately clear why this project went into liquidation. Nevertheless, overcoming any existing technical problems with this digester, and creating a viable business operation at this biogas plant should be well within the abilities of Weltec.

Weltec has established over 300 energy plants in 25 countries worldwide. They speak of their global distribution and service network spanning six continents. The range of customers includes businesses from the agriculture, food, waste and wastewater industries.

The Weltec Press Release follows:

WELTEC Group Takes Over 2.2-MW Horse Manure AD Plant in North Germany with Rapid Modernisation and Re-Commissioning Planned

As of 1 August 2018, Nordmethan GmbH, a company of the WELTEC BIOPOWER Group, has taken over an insolvent horse manure biogas plant in Südergellersen, Lower Saxony. The German specialist for the development and operation of bio-methane and biogas plants will fully modernise the technical and operational overall concept of the 2.2-Megawatt plant.

The project development work is currently underway.

“Following a takeover negotiation process of about two years, we will speedily modernise the AD plant technology in order to ensure its going concern“

, said Jens Albartus, Director of WELTEC BIOPOWER and Nordmethan.

The original plant had been set up in 2009 and expanded in 2014. The operator‘s concept was based on the digestion of horse manure and the sale of the digestate as fertiliser pellets. However, as the concept turned out to be technically difficult and economically unfeasible, the plant went bankrupt.

Following the takeover by the WELTEC Group, the substrate input is now being adjusted, and the plant technology is being modernised.

Henceforth, the two digesters with a capacity of 3,000 m3 each will be largely fed with renewable raw materials and horse manure from local suppliers within a range of fewer than 15 km. The generated biogas will be used to run two cogeneration power plants with an electrical output of 1.1 MW each. Nordmethan will supply the power to the public power grid.

Part of the exhaust heat from the cogeneration is to be used for drying the digestate.

Image shows a graphic to illustrate the horse manure biogas plant.Initially, extensive upgrade and repair work will be performed to ensure profitable operation of the biogas plant: Among other things, the investments of the WELTEC Group comprise modernisation work on the two cogeneration power plants and the solid matter input systems.

‘Additionally, we will install two digestate storage units and two digestate dryers. By equipping the biogas plant with modern control technology and a drive-in silo system, we will ensure flexibility for all requirements“

, says Jens Albartus, explaining the background of the conversion measures.

In view of this general overhaul, Jens Albartus is highly optimistic about the future economic success of the 2.2-MW plant. Thanks to its strong service department and the experience gained in building more than 300 biogas plants around the globe, the WELTEC Group is well prepared for such projects.

In Südergellersen, the company‘s expertise will make sure that the plant operation can react in a flexible way to all future challenges.

Read more from Weltec here.

Other Examples of HMAD Around the World

Manure biogas to light up streets at a hill station

Oct 28, 2017: In a first-of-its-kind initiative, the Matheran Hill Station Municipal council will have horse manure (dung-based) biogas plant. A trial to produce biogas from horse dung was found successful by Bhabha Atomic Research Centre (BARC). BARC will provide the technology for the 2MT capacity plant to be set up near a horse stable. The power generated from the plant will light up streetlights. There are around 460 horses and ponies in the hill station

MUMBAI: In a first-of-its-kind initiative, the Matheran Hill Station Municipal council will have a horse manure biogas plant. via biogas to light up streets

South Africa: Uses Horse Biogas to Turn Waste Into Power

Tiepelt's home apparatus cost about $5,000. He powers it with horse manure from a nearby farm. Unlike the wastewater plant, he does not use his biogas to generate much electricity. His apparatus generates enough horse manure biogas to power a stove, a water heater and … via South Africa: Nation Uses Biogas

Villagers in China Biodigester – development and environment

KUNMING, June 4 (Xinhua) — As it works to transform itself into a tourist destination, a village on Lake Lashi in southwest China's Yunnan Province is learning the importance of environmental protection.

Eight kilometres away from the tourist city of Lijiang, Xia Zhongyi and other residents of Haidong Village set their sights on tourism in 2004. Six years later a wetland conservation area was set up on the lake and the income of villagers is now more than ten times that of five years ago.

The problems of Lake Lashi are an example of the price the rural Chinese are beginning to pay for a previous lack of environmental awareness nationwide.

Luckily, the government, NGOs and volunteers already have all hands on deck to educate the public about the importance of caring for their surroundings.

The GEC and local government have distributed 90,000 flyers to tourists and residents of Lijiang, asking them not to litter. Meanwhile, volunteers have begun to collect horse manure and put it into a biogas digester. via China: Villagers

{First published in September 2018. Updated August 2022.]

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