DAIRY: DIRECT FILTRATION EFFLUENT POLISHING
Key Message
Direct filtration for effluent polishing
As long as the discharge requirements are getting more and more demanding, and the interest in water reuse is growing, some conventional biological treatments are far from being sufficient: tertiary treatment is therefore required.
Berghof tubular UF is an efficient and competitive technology for removing the suspended and colloidal matter that get outs from the previous treatment – typically a conventional activated sludge system. In this way, a high-quality effluent is obtained (free of solids, turbidity < 0.2 NTU, SDI < 3). Moreover, the ability of tubular membranes to handle high concentrations of suspended matter allows the operation with high recoveries (> 95 – 98%), thus minimizing the rejected volume.
Dairy effluent polishing - the process
When there is a need for improving the effluent quality in existing plants, tubular ultrafiltration is installed after the biological treatment, usually based on conventional activated sludge or SBR plants. The effluent from the clarifier is fed to the ultrafiltration membranes, producing a polished permeate and a concentrated reject, which is sent back to the upstream DAF process, if it exists, or to the biological reactor.
The UF permeate can be discharged to the sewer or surface water, and it is also possible to reduce the water footprint by reusing this stream, either directly or after removing the dissolved compounds with reverse osmosis.
Project References
Take a look at our case studies
Water softening | New Material Industry
Project Details
Capacity: 200 m3/d
Membrane: 8mm PVDF, CR
Location: Huguan County (China)
AnMBR & MBR | Dairy Industry
Project Details
Membrane: 8mm, PVDF, backwashable
Capacity: 1,900 m3/day
COD load: 9,000 to 18,000 kg/day
Location: Wisconsin
AnMBR | Creamery
Project Details
Membrane: 8mm, PVDF, backwashable
Capacity: 155 m3/day
BOD load: 1,587 kg/day
Location: Menomonie, Wisconsin
Manufactured in Germany
Tubular UF Membrane Modules
To prevent fouling and clogging, Berghof Membranes developed its line of robust tubular UF (ultrafiltration) membrane modules based on inside-out crossflow filtration.
Membrane Skid systems
Berghof Membranes developed B-SMART®, a customizable external membrane filtration system that can be designed with various features and functionalities.
Pilot systems & Lab testing
Bridging the gap between lab-scale testing and manufacturing. Our experts gives you the confidence to apply the technology for your specific wastewater challenges.
B-CARE® Service and Support
The B-CARE® program is an end-to-end comprehensive program developed to support our OEM partners from the piloting/engineering phase to operational system monitoring.
