Abattoir blood waste processing
Challenge:
Disposal methods of abattoir blood waste such as the following are NOT met with environmental requirements for proper disposal:
- Run-off or spraying the blood waste onto fields and covering it with a layer of soil.
- Municipal drainage
- Feeding to pigs as a feed additive.
- Burial
- Informal dumping
Rendering of blood is utilised by a significant number of poultry abattoirs to produce by-products, such as blood meal, poultry meal and fertilisers. In the commercial drying of blood waste from red meat abattoirs, blood is processed under relatively reduced temperature conditions using a commercial blood dryer.
Challenges with these rendering processes are high energy costs, odour nuisance, and the effluent must be treated before release or reuse.
Solution:
Sinowatek offers the Pulse Combustion Dryer for the drying of blood waste into a powder. The fresh whole blood is taken directly from the abattoir as a wet feed with about 16% total solids (TS). When dried in the pulse combustion chamber the water content of the blood is changed into super-heated steam, leaving behind a very dry, fine powder with sphere-shaped, smooth surfaced particles.
The powder consists of 98% (TS) with a moisture level of 2%. No denaturing of haemoglobin, albumin, globulins, or fibrinogen takes place during the drying process, leaving the blood powder ready to be utilized in any circular economy.
Benefit for Client:
Installing a Pulse Combustion Dryer (PCD) at an abattoir has the following benefits:
- Blood is pumped to the PCD on the abattoir site and can be dried to a powder.
- No disposal of blood waste or water effluent is necessary.
- The inert high-quality blood powder that the PCD delivers is a very profitable input to animal feed supplements etc.
- PCD technology is environmentally friendly, with high energy and thermal efficiency.
Smaller equipment footprint adds to the cost-effectiveness of the process.
