Abattoir blood waste processing
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.
- 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.
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.