PREVENTION. NOT DETECTION.TM
YOU JUST CAN’T LOSETM
■ September 2014
for reuse. By not following mandated provisions, companies also could be
responsible for environmental damage remediation.
Companies discharging wastewater either through POTWs or NPDES
should consider their full cost of wastewater disposal when evaluating
treatment and reuse options for their wastewater.
Every food and beverage manufacturing facility is unique and requires
tailored treatment and water reuse solutions for its applications.
Wastewater treatment technologies can be classified in two ways: conventional treatment processes, which can remove solids and adjust pH and
chlorine levels; and advanced processes, which filter and oxidize water
and result in a higher quality product. Advanced processes give the plant
more flexibility with how and where the recycled water is used.
There are various technologies within a standard treatment process
that can be configured for site-specific reasons. To remove coarse solids,
screens and filters can be used to block the sediment from discharging
with the wastewater; however, when a standard treatment process isn’t
enough, an advanced program can be deployed, using microfiltration or
ultrafiltration membranes, reverse osmosis, oxidation and disinfection.
Pump up the savings
Besides saving water, reuse can also lead to cost and energy savings.
Treating water is just the first step to guaranteeing wastewater is reused
efficiently and effectively within a food and beverage plant. It’s vital for
facilities to also keep in mind the transportation and storage of water.
Treatment and pumping systems are the primary energy consumers in
water systems, including those used in the reuse process. Sizing the
systems and selecting the right equipment to meet specific reuse requirements are critical to maximizing water system equipment’s energy use.
Pump and piping selection can have a considerable impact on the
energy consumed during the course of the water system’s life. For optimal use, pumps should operate as close to Best Efficiency Point (BEP) as
possible, and the plumbing should be engineered to minimize friction loss.
BEP is the flow rate at which a pump has its highest efficiency. If operating outside of this point, the pump system will consume more energy per
unit volume of water pumped, ultimately not achieving maximum savings.
According to global water company Xylem, a water reuse system using
improperly sized piping and pumps can increase energy consumption in a
facility by 200 to 300 percent[ 2].
Get in the game
A food and beverage plant’s total water and wastewater costs are significant and will continue to rise as facilities grow in size. Whatever the
application is, the sustainability benefits of water reuse include reduced
demand on water supply, wastewater disposal and impact on the local
community. Using the correct water reuse technologies increases the
company’s sustainable business practices and commitment to helping the
environment by recycling earth’s most valuable renewable resource.
About the author: Nate Maguire has more than nine years of experience
in the water industry and currently serves as the Americas business unit
director, industry and agriculture for Xylem’s applied water systems business unit. He can be reached at Nathan.Maguire@Xyleminc.com.
[ 2] Xylem Inc. Recycling Earth's Rapidly Shrinking Resource:
A Basic Primer on How Food and Beverage Plants Can Reuse Water
Effectively and Efficiently. June 2014. Print. ◆