Fruit & Vegetable Processing Wastewater Treatment

Our screening and treatment solutions can help fruit and vegetable producers to increase operating efficiency, recover potentially valuable materials from process water and wastewater, and cut costly effluent discharge fees.

For fruit and vegetable processing operations, surcharges for sewer discharges can be very high due to the amount of Total Suspended Solids (TSS) and Biochemical Oxygen Demand (BOD) present in the discharging effluent water. Washdown of plant equipment and clean in place (CIP) activities can also dislodge processed stalks, seeds, skins and other waste material along with inorganics, such as sand and dirt, that will be washed away with the cleaning water.

Typically a separate conventional screening and dewatering system is required prior to the effluent passing onto a Dissolved Air Flotation (DAF) system, where fine particles, oils and grease are removed. 

Our food processing water management solutions can help you to improve the way you capture these materials - protecting your DAF system, increasing operational efficiency and improving profitability. 

Rotating belt screening for fruit and vegetable processors

Sewer surcharges can be the bane of fruit and vegetable processing operations, with surcharges arising from both TSS and BOD in effluent water. Often these solids can be quite large, but unfortunately DAF is not very efficient at treating larger solids.

The Hydro MicroScreen™ ultrafine rotating belt screen can help you to cut effluent discharge fees by removing the need for both a conventional screening system and a dewatering system, while reducing the load sent to the DAF system, ensuring that you are operating it at maximum efficiency.  

The system captures finer particles than conventional screening and substantially reduces effluent TSS and particulate BOD. The Hydro MicroScreen™ generates clean, dewatered output that can be easily transferred to other applications, re-used or more economically sent to disposal.

Get better by-product recovery 

From skin and peel to cores and pips, by-product materials generated by fruit and vegetable processing have potential value - and discharging these into sewers can mean both lost revenue opportunities and high discharge fees.

The Hydro MicroScreen™ system can capture the fine particles (down to 100 micron) that are so frequently missed by conventional technologies such as drum screens - thereby recovering more by-product material than conventional technologies - and it produces a compacted, dewatered product that is cheaper to handle and transport for sale to secondary markets such as animal feed or for use in fertilizer.

The Hydro MicroScreen™ produces a compacted, dewatered product that is cheaper to handle and transport.

Hydrodynamic solids separation for fruit and vegetable processors

By nature, ground crops have sand and dirt associated with them. Raw materials received from farming operations are never quite clean enough to prevent abrasive damage to rollers, conveyors, pumps, knives and other processing equipment. Sand and dirt cause equipment to prematurely fail and can force your line to shut down when you are operating at peak capacity.

Flume receiving stations also require a tremendous amount of water, and plants with conventional technologies are often left with no option other than to send flume water to large settling basins that require dredging, excavating, and hauling to regain volume for settling.

Our small-footprint hydrodynamic separation systems - such as the HeadCell®, Grit King® or TeaCup® - remove grit, sand and other inorganic solids with extremely high efficiency, protecting these downstream systems from clogging and abrasive damage, and preventing the need for large, costly settling tanks. 

Our small-footprint hydrodynamic separation systems remove grit, sand and other inorganic solids with extremely high efficiency.

Recycle water and protect downstream equipment

With over 45 years of experience, our industry-leading liquid-solids separation systems effectively remove abrasive particles from flows to protect your plant. We capture more - and finer - inorganic solid particles than any other technology and, in most applications, our solutions will remove more than 95% of grit 75 micron (200 mesh) and larger. Our small-footprint solutions make it easy to eliminate abrasion issues in even the most constrained plant layouts.

In many types of food processing applications once the dirt and debris are removed by one of our separation systems the water can be recycled for immediate re-use upstream to wash or convey additional product or reused in other plant operations.  When paired with a Grit Snail® dewatering escalator, the captured solids have very low water content, allowing cost-effective disposal or re-use - helping to save you money.

Case Studies

New Jersey, jalapeños

The Hydro MicroScreen™ system was piloted for a large fruit and vegetable processing plant in southwestern New Jersey. When jalapeño process effluent was tested for both TSS and particulate BOD removal the Hydro MicroScreen™ was shown to remove nearly twice the amount of TSS as the existing technology, as well as the same amount of particulate BOD.

Read the case study: Hydro MicroScreen™ doubles solids removal for New Jersey jalapeño processor

Bakersfield, carrots

A carrot producer in California was unhappy with the performance of their disc screen system. They piloted the Hydro MicroScreen™ system and discovered that it removed 100% more solids than the existing filtration technology and doubled their recycled water irrigation efficiency.

Read the case study: Hydro MicroScreen™ doubles water recycling efficiency for Bakersfield carrot processor

Southern California, peppers

A southern California pepper processor wanted to improve on their existing drum and shaker screen for primary clarification and screening of pepper solids in their process flows. The Hydro MicroScreen™ was shown to reduce particulate BOD by 50% and TSS by 70% under heavy solids loading conditions.

Read the case study: Hydro MicroScreen™ cuts BOD by 50% and TSS by 70% for California pepper processor

See it in action

Watch our video to see the Hydro MicroScreen™ filtering jalapeño processing water:

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