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Dewatering of manure from small and medium-sized cattle farms


Modern breeding technology has brought higher profit margins to cattle farmers, but it also brings some small problems. Large-scale cattle farms produce a large amount of cow manure every day. Cow manure is mixed with a large amount of cow urine.

At the same time, there will also be a large amount of sand-flushing sewage and cow manure mixed when washing the cow pen. Causing cow manure to be very loose and with high moisture content. Affects the collection and transportation of cow manure.

If cow dung can be dehydrated, the dehydrated cow dung can be anaerobically fermented to make fertilizer, avoiding the environmental significance of the cow dung dehydrator being scattered everywhere.

In short, it is to transform cow dung into a Renewable resource, which is not only resource-saving, but also of great significance to environmental protection, and promotes the development of agricultural circular economy and the sustainable development of animal husbandry.

At the same time, cow manure is the source of breeding and reproduction of various bacterial pathogens, which seriously impacts the breeding population.

In addition, when cow manure is used on the ground, it generates heat, consumes soil oxygen, causes root burning and seedling burning, and also plays a role in spreading parasitic eggs and pathogenic microorganisms. Therefore, cow manure treatment is essential.

After the dehydration of cow manure, high-temperature composting and anaerobic fermentation of biogas are carried out. Fresh compost and biogas residue have high moisture content and large volumes, making storage, transportation, and use inconvenient.

Fresh compost or biogas residue can reduce the weight and volume of compost by 40% and 40%~60% after being air dried and compressed into granules.

Therefore, the granulation production of fresh compost or biogas residue will promote the circulation of cow manure compost and its application in agriculture.

The production process of cattle manure granulated Manure 

  • Collect fresh cow manure. 
    There are 1000 cows on hand, and around 25000 kg of cow manure is collected every day. Cow urine and sewage are discharged into the biogas digester through the sewage system for treatment. 
  • Dehydration of fresh cow manure  
    Fresh cow manure is dewatered by pressing with a solid-liquid separator, and the moisture content of the dehydrated cow manure can be reduced to below 60%. It not only facilitates the transportation of cow manure but also reduces the treatment load of the cattle wastewater treatment system.

Cow dung dewatering machine

The Cow dung dewatering machine is the best equipment for the dewatering of cow manure in large and medium-sized cattle farms. 

After being dehydrated by this solid-liquid separator, the moisture content of cow manure is low, only about 50%. The appearance is fluffy, and nonsticky, and the odor is reduced. It cannot be squeezed out by hand, and cannot form a ball after being released.

The dried cow dung after treatment can be used as bedding material for cow beds or directly bagged or sold. The moisture content of the processed cow dung is the best condition for the fermentation of cow dung Manure.

Firstly, connect the host motor, run it to confirm the correct direction of rotation of the spiral shaft, stop the machine, and then fill the discharge port of the machine with material residue or waste newspapers, cloth, etc. containing about 70% water.

Then adjust the position of the counterweight to the maximum torque to form the pressure layer of the extruder. A manual separator without a properly filled pressure layer cannot start and operate. Because after pumping in fecal water without pressure, it will immediately spray out the discharge port. Please remember to fill the discharge port tightly!

When using the extruder, a dedicated person should manage it, and the person in charge should understand the performance of the entire machine. Regular maintenance and upkeep should be carried out. Generally, during normal use, the mesh screen should be cleaned every one or two months.

  • When cleaning, first remove the discharge port bolts and then remove the mesh screen. 
  • Use clean water and a copper wire brush to clean any blockages in the mesh screen. 
  • It is particularly noteworthy to maintain the original installation position of the mesh screen. 
  • Please pay attention to the position of the guide rail of the screen while removing it, and it is best to make a mark.
  • Maintain the original position during installation, otherwise, in future operation, the wear of the mesh screen will increase, which will naturally affect the discharge efficiency of the extruder. 

Cow dung dewatering machine is a new type of high-efficiency solid-liquid separation equipment, which can also be applied to the dehydration treatment of feces in chicken, duck, and pig farms after simple modification, with a wide range of market applications.

If you are not sure which solid-liquid separator is more suitable for you, please contact us and our technical staff will give you the most professional advice.

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