Slurry Separation – Good Investment?

Mechanical separation of slurry improves the application and fertilising qualities of the separated slurry vs original slurry. Separating slurry also reduces the amount of storage needed by up to 30%.

Separated Liquid 

By separating the liquid from the solids:

• The volume liquid volume reduces by 17 to 20% – The estimated application cost of £1.60/m3 working on a rate of 47 m3 per hour equates to £75/hour which give a 10 to 12 minute per hour time saving. Increasing the amount of slurry that can be applied per hectare/hour.
• The ammonia fraction of nitrogen which is directly taken up by plants also increases by 6 % resulting in a faster absorption rate by the growing crop.
• The absence of large solid particles makes application with dribble bars, trailing shoes and shallow injectors easier reducing the time and cost of spreading.
• Phosphorus composition is reduced by 18%.

Separated Solids

The resulting solids are compostable with a high nutrient concentration, especially organic nitrogen and phosphate which makes it ideal for spreading at the cultivation stage pre-drilling of cereal and maize crops. The product is friable – easy to spread and minimises the wear and tear of machinery.

A composting process of three to six months will reduce the mass volume by 50% giving a more concentrated product, which can be exported cost effectively as part of your NVZ plan or sold to non-livestock farms.

Livestock farmers all over the world are now investing heavily in this technology to process their animal waste, turning a problem into a benefit and reducing their fertiliser costs. If you would like an appraisal of your current slurry handling and storage system, please contact Mark at or your local FCG Office.

Posted in Arable & Crops, Dairy & Forage, Sherborne.