In close co-operation with agricultural experts, consultants in the dairy industry, veterinaries and dairy farmers, Stjernholm has developed a range of products and acquired unique process knowledge which allows to offer a turn-key solution when it comes to separate sand from slurry, clean the sand and reuse it in the stalls of larger dairy units. Former difficulties handling slurry containing sand can now be eliminated resulting in improved animal welfare and increased profitability.
Stjernholms’s focus is to develop and market technical solutions and systems for the treatment of slurry containing sand, for farmers in Denmark and abroad. With us, you will find a professional partner capable of delivering high quality and reliable machinery working to your benefit and to the welfare of your livestock.
Stjernholm is established in 1997 the company develops, manufactures, markets and installs a wide range of quality equipment for domestic and industrial waste water treatment. Stjernholm products are well known for their high quality and reliability. Adapted to the requirements in agricultural applications Stjernholm products create a solid base for the equipment delivered.
Every dairy farmer using sand beddings is well acquainted with the challenges in handling slurry containing large quantities of sand..
Opicon’s customised solutions help dairy farmers to meet these challenges, offering simple, reliable and smart systems to handle slurry containing sand.
Opicon’s proces of handling slurry with sand is unique. It is based on many years of development, experience and application of equipment to handle sand holding waste water. Today, the proces is fully adapted for the application on agricultural sites with installations running in both Denmark and abroad.
The proces consists of three steps:
The Opicon sand/slurry separation proces reduces expenses for buying new sand and eliminates, the cost of removing sand sediments in storage tanks. Sandfree slurry can be stored and spread or used on biogas plants without the problems sand containing slurry normally would cause with these activities.
Stjernholm’s rotary screen is particularly suitable in order to separate some of the liquid from the slurry before transfer to the sandwasher.
The choice of pumps depends mainly on requirements for flow and pressure and of the necessary interaction between different pumps’ capacities.
The macerator ensures that foreign objects are chopped in order to avoid risk of clogging of pipes
The conveying systems are adapted to the local conditions and can consist of conveyor belts or augers
Apart from gaining certain economic benefits through improved productivity and fewer veterinarian bills, the content of grit and biological dry matter is highly important when choosing a grit washer system.
A high level of grit retention minimises expenses for new purchases and allows for delivery to biogas production facilities. Furthermore, a high percentage of dry matter provides an income from selling slurry for biogas production.