Problem A wastewater treatment facility located in the City of Jasper, FL was experiencing increased energy costs due to reduced capacity and treatment efficiency from accumulated sand and grit in their infrastructure. More than 44-tons of sand and grit was removed from the facility. Solution The facility sought assistance from U.S. Submergent Technologies (USST) to remove the material. USST restored the capacity of the City of Jasper’s 1.2 MGD wastewater treatment plant by safely removing 44 tons of sand and grit from nine of their structures. During the debris removal process, USST’s dependable crew worked carefully to avoid damaging any of the facility’s diffusers. Results Thanks to USST’s GritGone Process® for debris removal, the Jasper facility was cleaned while remaining in full operation and the material was paint filter dry upon onsite disposal. Jasper Public Works Director, Harry Davis, was very pleased and said, “The work was done in a very professional manner.” View the full case study here.

Problem The City of Orlando, Florida s 48-inch sanitary sewer pipe near Kirkman Road, leading to the City’s Conserv II Water Reclamation Facility had lost capacity due to an accumulation of sand, grit, and material.  Challenging access issues on the project included hard-to-reach manholes located on the opposite side of Shingle Creek. Solution The facility sought assistance from U.S. Submergent Technologies (USST) in early 2018 to remove the material.  Access for equipment was challenging as the USST crew had to navigate through narrow access points to reach certain areas of the job. These difficulties could have been problematic, however, the USST crew adjusted their approach and utilized USST s Combination3® technology to easily overcome the obstacles in order to reach the job site and get the work done efficiently and safely.  USST’s Combination3® technology engages jetter, vacuum and downhole pumping with 49-foot knuckleboom fully integrated on one truck chassis, creating a powerhouse of equipment in the submergent cleaning industry. No additional equipment or tools needed to be brought in, saving both time and resources for the client. Results Paul Del Favero and Michael Kisling of the USST crew lead the Orlando project, cleaning out grit, rags and small rocks from the 2,500-foot … Read More

Problem: A splitter box at a Central Florida utility was experiencing reduced capacity due to a significant buildup of sand and grit. Wastewater treatment facilities typically employ a splitter box to separate influent flow to various structures such as aeration basins or clarifiers. This Central Florida splitter box had a visible level of sand above the water line that needed to be cleaned, and the structure measured approximately 40-feet by 25-feet. The utility was also unable to divert flow or take the structure offline, adding another level of complexity to the project. Solution: USST crew mobilized to the site, bringing with them a powerhouse of equipment, the Combination3® Truck, outfitted with extended boom, downhole pump, and jetter. While the splitter box was in full operation, USST utilized the GritGone Process® to remove sand and grit material. Results: 22 total cubic yards of sand and grit was removed from the splitter box. Because the box did not have to be taken offline or drained down, risky confined space entry was not necessary. “Cleaning in submerged conditions while in operation is our specialty,” said Denver Stutler, Jr., USST CEO. “Not having to drain down structures and keep our crew out of confined space allows us to … Read More

7,173-FEET CLEANED, 180-TONS (EST.) OF SAND REMOVED WITH NO BYPASS After experiencing a series of overflows upstream, the City of Tampa was looking to clean sand and grit out of the Bayshore Gravity Sewer while in service.  Without the ability to bypass the line or divert flow, USST performed the work under submerged conditions in the 27-inch and 30-inch pipe. Aaron Hood, one of USST’s experienced Operations Managers (read more about Aaron here!), led the USST crew on the Bayshore project, cleaning more than 7,000-feet of pipe.  “We used our Combination3® truck outfitted with extended boom, downhole pump, and jetter to travel the length of the pipe and remove sand, grit, and some rag material,” said Aaron.  “The crew did a great job managing the high production rate and we performed all work while the line was in operation.” No confined space entry was necessary due to USST’s patented equipment and process, saving the City time and money while ensuring a safe jobsite for the crew.  There was minimal intrusion into the surrounding neighborhood during the project due to the closed loop cleaning system of the Combination3® technology, which meant less odor and noise for nearby residences. Tampa’s Bayshore project … Read More

CLEANING DOWNSTREAM, NAVIGATING 90-DEGREE TURN IN 30-INCH GRAVITY SEWER USST recently completed work on a 1,200-foot section of 30-inch gravity sewer located under a major roadway which was experiencing reduced capacity due to a buildup of sand and grit.  The facility had explored a number of options but was unable to solve the issue due to safety, time, and cost concerns.  Because the line was unable to be shutdown, USST was able to solve the problem and perform sand and grit removal while in operation, under flow. USST Foreman Michael Kisling led the crew on the project, ensuring all material was removed, following up with a post-cleaning inspection.  The crew encountered unexpected access concerns when beginning the project.   One of the manholes planned for access during cleaning was discovered to have limitations for USST’s equipment and was unable to be used.  “In order to overcome the restricted access, we jetted material back to an accessible manhole using the Combination3® Truck,” said Michael.  “It required us to clean from a downstream manhole while navigating a 90-degree turn, removing material while under flow.” After the material was removed, an inspection was performed while the line was in full operation using USST’s pipe … Read More

30-YEARS OF MATERIAL REMOVED FROM BOTH WET & DRY CONDITIONS IN QUINCY Four structures at the City of Quincy’s Wastewater Treatment Plant were overdue for cleaning, due to a significant amount of sand and grit accumulation over the last 30-years.  With multiple setups needed to complete the project, the USST crew mobilized to the site armed with the versatile Combination3® Truck and removed the built-up sand and grit. A 55-foot diameter digester and a 75-foot diameter nitro tank were the first two structures the crew tackled.  While the structures were in full operation, USST utilized the Combination3® Truck’s downhole pump combined with the GritGone Process® and removed sand and grit material.  The truck’s 49-foot extendable boom was utilized to reach over the 15-foot and 12-foot high walls of each structure, respectively.  Because the tanks did not have to be taken offline or drained down in either case, confined space entry was not required.  Next, the USST crew turned to the third and fourth structures needing to be cleaned: two combined fermentation and anoxic tanks, both measuring approximately 24-feet wide by 80-feet in length.  These tanks needed to be taken offline due to capacity issues, and a drain down was necessary … Read More

YEARS OF BUILT-UP RAG MATERIAL REMOVED IN DELRAY BEACH An aeration basin at the Delray Beach South Central Regional Reclamation Facility was overdue for cleaning, having built up a significant amount of sand, grit, and rag material that needed to be removed.  The USST crew mobilized to the site armed with the versatile Combination3® Truck, well-prepared to handle the project. Made up of three 60-foot by 60-foot bays, the aeration basin was drained down when the crew arrived.  To aid the cleaning and rehabilitation of the tank, diffusers were removed from the bottom of the bays and USST crew utilized a skid steer to assist in the removal of the high-density material from the structure.  The Combination3® Truck’s powerful vacuum was used to remove sand, grit, rags, and sludge, and has the ability to get over high walls without losing power.  USST’s vacuum is powered by a blower capable of delivering nearly double the CFM of a standard vacuum truck, allowing the crew to remove large amounts of wastewater residuals and complete the job quickly.  “Our years of experience provides us with the ability to adapt to unknown conditions and be prepared for obstacles we may face on the jobsite,” … Read More