Food Processing Wastewater Treatment

Food processing operations generate wastewater which can have high levels of TSS, BOD, COD and FOG. Pretreatment before discharging to a sewer system significantly reduces surcharge fees, as well as recovering potentially valuable by-products. 

Food processing facilities require water for activities that include conveying product, washing, processing and clean-in-place (CIP) operations. As a result, they typically generate a tremendous amount of wastewater, which often has very high levels of Total Suspended Solids (TSS), Biological Oxygen Demand (BOD), Chemical Oxygen Demand (COD), and Fats, Oils, & Greases (FOG).

Our food processing wastewater solutions help reduce operating costs, improve wastewater treatment efficiency and help recover valuable by-products.

Learn how we've helped operations just like yours!

Download a brochure that gives an overview of numerous industrial food and beverage operations that have benefitted from the Hydro MicroScreen. To learn more about how your specific type of food processing operations can benefit from Hydro International’s liquid-solid separation systems visit the category pages below:

Ultrafine Rotating Belt Filtration for Food Processing 

Ever-increasing sewer discharge fees can be a significant operational expense for food processors. Separating by-product materials from flow streams allows much more cost-effective disposal as clean, dewatered materials that may have potential reuse options or in the very least are ready for landfill. Hydro MicroScreen™ ultrafine rotating belt filtration can reduce, or in some applications eliminate sewer discharge fees.

In many cases, this dewatered material may have value. Belt filtration can provide the opportunity to more cost-effectively sell solids into new markets, create additional product, or create biomass for waste to energy conversion. Dewatered solids have less volume and weight which decreases handling and transportation costs.

The Hydro MicroScreen™ is the ideal solution for food processors with residual solids in their flow following conventional screening. Conventional screening systems typically remove solids 500 micron (0.020”) and larger while the Hydro MicroScreen™ can remove solids as fine as 100 micron (0.0039")

Capturing much finer particles than conventional screening significantly reduces TSS, particulate BOD and COD. In many cases, depending on the temperature, the system can also reduce FOG. Hydro MicroScreen™ produces a clean dewatered output that can be easily transferred to other applications or more economically sent to disposal. It depends on your site-specific conditions and application but the Hydro MicroScreen™ typically removes up to 70% TSS, 40% particulate BOD, and 40% of FOG.

Hydro MicroScreen™ – A Better Way to Protect Dissolved Air Filtration (DAF)

The Hydro MicroScreen™ does not require equalization prior to screening and will reduce the TSS and particulate BOD going into a DAF. Depending on influent temperature, the Hydro MicroScreen™ can often remove 20%-40% of FOG. This reduces the load on an existing DAF system which helps achieve better performance. In new DAF installations a Hydro MicroScreen™ can reduce the size / capacity of the DAF system required.  

Hydro MicroScreen™ – Much Finer Screening Captures Much More Solids

Wedgewire drum screens are typically offered in sizes that range from 0.010” – 0.060” (250 – 1500 micron) openings. This means they will miss the materials that are smaller than that. The Hydro MicroScreen™ can be sized to capture 100 micron and larger. Finer solids are the most difficult to deal with and can contribute to a large portion of the total solids loading.

Additionally, drum screens require a separate compaction / dewatering system. Compared to drum screens, the Hydro MicroScreen™ provides significantly better performance in TSS and BOD removal, uses less wash water, and does not require a separate compaction system.

Hydro MicroScreen™ - Small Footprint Sedimentation / Clarification 

In addition to materials recovery and solids removal the Hydro MicroScreen™ offers numerous benefits compared to conventional settling / sedimentation systems: 

  • Uses just 15-30% of the energy 
  • Provides superior solids dewatering
  • Reduces overall solids handling costs
  • Requires as little as 10% of the overall footprint
  • Reduces retention time 
  • Increases plant capacity 
  • Often does not require chemicals
  • Capital construction costs are just 20-30% of a conventional settling system 

Sediment / Sand Removal for Food Processors

Sand and sediment is abrasive and accelerates wear on sorting, cutting, and pumping equipment. Additionally, its presence in water reduces the quality of your product as well as limiting your ability to reuse that water. Sand and fine particles in your wastewater can substantially and unnecessarily increase sewer surcharge fees. 

Removing fine particles from your flow streams is one of the easiest ways to decrease your operational costs, increase your plant's efficiency, and increase the quality of your output and improve water reuse.  Hydro International provides the best performing liquid-solids systems on the market and specializes in creating site-specific solutions that have a rapid ROI.

Hydro International Sand Removal Benefits

Some of the benefits of Hydro International sand and sediment removal systems like the HeadCell®, TeaCup® and Grit King® include: 

  • Much smaller footprint than conventional sedimentation 
  • Not subject to thermal short circuiting 
  • Removes finer grit (95% of all grit 75 micron and larger) than other technologies
  • Virtually no detention time required

Back to our Industrial WW Home Page? Click Here

Sign up for industrial water treatment updates

We'd like to update you on industrial water treatment news, articles and product developments. To sign up to receive updates just complete the form:

We won't send updates frequently, and we'll take good care of your personal information.

Share Share