Industrial Wastewater Pre-Treatment Plant
Royal Canin USA, Inc., North Sioux City, South Dakota
|Owner||Royal Canin USA, Inc.|
|Location||North Sioux City, SD|
|Gross Floor Area||8,058 SF|
The facility was designed for Royal Canin USA, Inc., to pre-treat 150,000 gallons of wastewater per day that is produced by the pet food manufacturing process. With the main purpose being to reduce the amount of TSS, BOD’s, etc. to comply with the municipal requirements for wastewater.
The main treatment process was Dissolved Air Floatation (DAF) which was needed to bring the raw wastewater down to levels suitable to be discharged to the municipal sewer system.
The first step of the pretreatment process was a rotating screen to remove heavy or large solids from the raw wastewater. These screenings were discharged from the rotating screen into a screening press which was used to remove some of the water from the screens. The screening press then discharged into a compactor. This system was designed to minimize the manual handling of the large solids.
After the rotating screen the wastewater goes to an equalization tank to equalize the consistency of the wastewater. This was done so that the wastewater going to the DAF had somewhat consistent levels of TSS, BOD’s, etc... to help the DAF perform more effectively and efficiently.
Due to the high levels of sulfides in the potable water at the site plus the sulfides that are introduced into the wastewater by the pet food manufacturing process we added magnesium hydroxide into the equalization tank to raise the pH level of the wastewater to minimize the formation of hydrogen sulfide (H2S).
Along with the wastewater treatment system an odor treatment system also was installed using carbon filter technology.Learn More About Royal Canin, USA.