Dairy Waste Management & Wastewater Treatment

Managing the Challenges of Dairy Wastewater Treatment Plants

Wastewater management, disposal and reuse are certainly among the top challenges of the dairy industry—not just in Australia, but globally. Recent years have seen an increased emphasis on recycling dairy waste to improve sustainability. These types of green initiatives are calling for dairy companies to evolve continuously and change as new technologies enter the market. However, these additional expectations might be a lot for dairy companies to handle, since dairy waste management is already a complicated and challenging process.

The Complex Dairy Wastewater Treatment Process—and How the Aerofloat DAF Can Help

At Aerofloat, our products are designed in part to assist dairy wastewater treatment plants in the design of smart and efficient processes for waste management. Our DAF system (dissolved air flotation) can play a major role in the dairy wastewater treatment process. Dairy waste management involves removing whey and other byproducts used during the milk and cheese manufacturing process. The Aerofloat DAF can play a role in this process—though it cannot handle the complete treatment by itself.

Unlike with some other types of wastewater, the wastewater created through the dairy manufacturing process includes individual components that can only be removed via biological treatment. So while the Aerofloat DAF can remove suspended solids and fats, oils and grease from dairy wastewater, only organic water treatments can get wastewater to a point where it can feasibly be recycled and reused.

Natural dairy wastewater treatment processes typically strive to get two measurements into reasonable ranges. The first is BOD, or biochemical oxygen demand. BOD numbers primarily indicate how much of an impact the wastewater would have if it were discharged into a natural waterway. Since waterways and sewage systems all have their own levels of bacteria and nutrients, when they come into contact with wastewater, the collision almost always causes biochemical reactions. These reactions are significant indicators of how much of a pollutant something is. As such, BOD is more or less a measure of how much pollution wastewater would cause. Water from a dairy wastewater treatment plant has extremely high BOD measures, which makes it difficult to recycle the water.

Biological processing also helps with TSS, or total suspended solids. With an Aerofloat DAF playing its part in the dairy wastewater treatment process, the hope is that all or most suspended solids will already have been removed from the equation when the wastewater reaches the biological treatment stage. However, a good biological process should still help the water reach compliance with all BOD and TSS regulations—thereby allowing for the wastewater to be discharged or reused.

This is where Aerofloat can also help. Aerofloat has recently added a unique biological wastewater treatment offering in the form of a Moving Bed Biofilm Reactor (MBBR). Similar to the DAF, Aerofloat has taken a proven technique and added some unqiue smarts to the design, to make it simpler and more cost effective than traditional MBBR systems. The development of the MBBR was primarily in response to the need for a wastewater treatment solution for dairy wastewater.

Start Building Your Onsite Dairy Wastewater Treatment Plant Today, with the Aerofloat DAF

Dairy manufacturers without onsite wastewater treatment systems typically have to spend big to have their water treated elsewhere. An onsite system with both an Aerofloat DAF and a biological system MBBR are an optimal solution for your dairy wastewater treatment plant. To assist with your dairy waste management please call Aerofloat on +61 (0)2 9544 1449 to learn more about our dissolved air flotation system and MBBR and the significant role they can play in your burgeoning wastewater treatment system.