A slurry separator can be a sensible investment for farmers, helping to improve profitability and environmental protection. At Paulmichl, you will find five powerful separators with many expansion options to ensure that your new slurry separator meets the requirements of your farm.

  • Gülleseparator PM200 mobil oder stationär
    Separator PM200
    • Ideal for small & medium-sized businesses
    • Flow rate up to 18m³/h
    to product
  • Gülleseparator PM260 mobil oder stationär
    Separator PM260
    • Ideal for medium & large companies
    • Flow rate up to 35m³/h
    to product
  • Gülleseparator PM300 mit hoher Durchsatzleistung
    Separator PM300
    • Flow rate up to 65m³/h
    • Ideal for large farms & contractors
    to product
  • Separator PM300-X mit einem Maximum an Leistung in der Gülleseparation
    Separator PM300-X
    • Ideal for large farms & contractors
    • Flow rate up to 90m³/h
    to product
  • Separator DSR für den Wandanbau als auch für den Deckenanbau
    Separator DSR
    • Ideal for biogas plant operators
    • Separator with direct substrate recirculation
    to product

Effective separation.

What is a slurry separator?

The principle of separating slurry is briefly explained: a slurry separator separates the solid and liquid substances from the medium to be separated. The result is separated slurry solids and thin slurry. Raw slurry usually has a dry matter content (DM content) of between 6 and 10%. Separation with a Paulmichl slurry separator can increase the DM content of the separated slurry solids to up to 32%. Our separators are also used in biogas plants to separate the solid and liquid components of the substrate.

Why separate slurry?

Separating slurry involves separating the slurry into liquid and solid substances, both of which can be utilised effectively on the farm:

The thin slurry that remains after separation is rich in fast-acting nitrogen. These nutrients are extremely valuable for fertilisation. By separating the slurry, the thin phase is absorbed more quickly into the soil and leaves less feed contamination on the field.

The solids that are separated during the separation process can either be finely spread on the field, delivered to biogas plants or used as bedding.

Mobile slurry separator from Paulmichl separates the solid and liquid substances from the medium to be separated

The versatile application possibilities of slurry separators bring many advantages to farmers, arable farmers and biogas plant operators.

  • Improvement of the nutrient balance and more efficient fertilisation
  • Slurry as a substitute for mineral fertiliser
  • Less feed contamination and burns due to more free-flowing thin slurry
  • Reduction in storage volume, application rates and transport costs
  • Reduction in mixing costs

If you would like to know how you can optimise the benefits for your farm, please contact us and we will be happy to advise you.

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Slurry separator in use -
Milchviehbetrieb Müller.

Curious about how our Paulmichl slurry separator is used on the farm? Mario Müller from the Müller dairy farm takes you to his farm and shows you how slurry separation works:

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Finding the right slurry separator

Choosing the right slurry separator depends on several factors. To ensure that the separator is optimally suited to the requirements of your business, the throughput capacity, medium and type of application must be precisely matched.

Our separators are suitable for agricultural businesses, contractors, biogas plants, the food industry and waste recycling plants. They can be individually adapted – stationary or mobile, with different screen baskets and dry matter contents.

Important criteria when selecting a slurry separator

Throughput capacity: How many cubic metres of manure or substrate need to be processed per hour? The capacity should be appropriate for the size of the operation and the daily volume.

Dry matter content (DM content): The higher the DM content in the solid matter, the drier, more storable and more versatile the material is. We adapt the screen basket to the medium, such as pig manure, cattle manure or biogas substrate.

Type of use: stationary or mobile: Depending on the operational structure, the separator can be permanently installed or used as a mobile unit. For contract businesses, we offer powerful, mobile separators with a flexible range of applications.

Maintenance and service: Regular maintenance ensures reliable operation. Our service team is available at any time to answer questions, provide spare parts or make adjustments.

Objective of separation: Do you want to improve flowability, reduce storage space or process solids as bedding or substrate for the biogas plant? The objective determines the appropriate separator configuration.

Get an overview of our separators for manure and biogas here or let our experts advise you individually on which separator is right for your business.

Get advice now

Advantages Advantages

Advantages of our slurry separators

Less forage contamination and more efficient fertilisation

After slurry separation, the liquid manure is better suited for fertilisation. Due to its good flowability, it is quickly absorbed into the soil, contaminates the forage or crop less, causes fewer burns and the time window for application is larger. The liquid manure contains a high proportion of readily available ammonium nitrogen (NH4-N). The increased NH4 content accelerates the nitrogen effect. As a result, yields increase and the need for reseeding and herbicides is reduced.

Improving the nutrient balance

If the balance shows a nutrient surplus, the nutrients can be released to the outside through separation, e.g. to arable farms and biogas plants.

Optimum utilisation of solids

Due to the high proportion of organically bound nitrogen, the solid fraction can be used as a long-term fertiliser, thus returning carbon to the carbon cycle. The solid phase contains around 20% of the total N, around a third of the phosphorus and around 15% of the potash.

Reduced spreading and transport costs

Separation makes the slurry more transportable and the nutrient content per tonne is higher.

Slurry as a substitute for mineral fertiliser

After slurry separation, a higher proportion of the nitrogen in the liquid manure is in a readily available ammonium form. As a result, the nutrients penetrate the soil more quickly. This reduces ammonia losses.

Less storage capacity

Separation can reduce the storage volume by up to 20%.

Efficient and environmentally friendly spreading

The liquid manure spread develops fewer odours as it can be spread close to the ground or slit directly into the soil. In addition, the liquid manure is more homogeneous and easier to spread, which saves time and labour.

Reduction in energy costs for mixing

If the slurry is very thick, it makes the work of the agitators more difficult. An increase in electricity costs with a constant or even decreasing gas yield of a biogas plant could indicate problems with the agitators in the fermenter. In biogas plants, this can be counteracted by separating and pressing the solids out of the fermenter. The remaining liquid phase can be fed back into the tank and thus the agitators can work optimally again.

Reduction of the storage volume in the tank

By separating solids and liquids, the storage volume in the tank can be reduced considerably (depending on the source material)

Costs and subsidies

Slurry separators can be an investment, but the benefits mentioned above can pay for themselves in the long term. In some federal states, there are also subsidy programmes for the purchase of slurry separators or for biogas plants.

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