Most recent article for: Serving Public Servants

Over 2,400 Tons of Sand and Grit Debris Removed from Wastewater Tanks

March 31, 2022
ecently, a rural municipality in Northern Florida benefitted from the sand and grit grant program and utilized U.S. Submergent Technologies (USST) to clean a substantial amount of built-up sand and grit debris from their wastewater tanks while they remained online. 
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February 28, 2022

350 Tons of Material Removed from Basins in Central Florida

A Challenging Environment Calls for Skillful Pros In Central Florida, a 12 MGD reclamation facility was experiencing a loss of capacity in their north aeration and anoxic basins.  These tanks presented a challenge because they were lined with rows of diffusers that circulate oxygen feeding the microorganisms and bacteria residents that break down the waste.  This job required experienced professionals to access and remove the built-up material, so the customer called on U.S. Submergent Technologies (USST) for a solution.  USST has cleaned tanks, pipes, and lift stations on over 400 projects around the United States.  Our qualified crews know how

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January 27, 2022

63 Tons of Material Removed from Rural Treatment Plant

Florida Sand and Grit Grant Program Reimburses Restoration Costs A rural community located in Southeast Florida’s Treasure Coast was experiencing capacity issues with their wastewater treatment plant’s multi-tank.  Specifically, inside their chlorine contact chamber, which disinfects and treats the wastewater.  A considerable amount of debris was clogging up this structure and decreasing efficiency at the plant. This municipal wastewater treatment plant collects and treats more than 500,000 gallons of wastewater per day and met the qualifications for reimbursement through Florida’s Sand and Grit Grant Program, which makes it possible for publicly owned facilities averaging 3MGD or less to address the

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December 2, 2021

977 Tons of Sand Removed From EQ Tank

A Massive Job Calls for USST’s Expert Knowledge A large primary clarifier serving as an equalization tank at a city’s wastewater treatment facility had accumulated 16-foot-high mounds of sand along the bottom, seriously reducing its capacity and potentially passing grit through the treatment process.  U.S. Submergent Technologies’ (USST) expertly trained crew set about to handle cleaning this massive 125-foot in diameter structure.  “Our knowledgeable crews have a proven keen ability to navigate obstacles on the ground and this job presented some unique challenges,” said Paul Del Favero, Operations Manager at USST.  “This tank was huge, it’s covered, and the walls

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September 28, 2021

364 Tons of Material Removed from Town’s Wastewater Plant

USST Crew Responds to Changed Conditions Adeptly In rural Northeast Florida, a municipal wastewater treatment plant operating at .4 MGD was reaching critical capacity loss with their surge tank.  This large multi-chamber tank, which is essential to the overall health and functionality of daily operations at the plant, required cleaning.  U.S. Submergent Technologies (USST) was called in to assess the structure and remove the buildup of sand and grit throughout this wastewater tank. “This project was estimated to have 36 tons of material in the tank, but once we got on-site, we were dealing with at least seven feet of

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August 31, 2021

Case Study: 630-Tons of Sand & Grit Removed from Oxidation Ditches

Florida Sand and Grit Grant Program Covers Restoration Costs PROBLEM: Two oxidation ditches at two wastewater treatment plants serving the City of Mount Dora were due for cleaning, having accumulated a significant amount of sand, grit, and debris over 15-years. This loss of capacity was increasing energy costs and reducing efficiency at these treatment plants. U.S. Submergent Technologies’ (USST) knowledgeable crew was called-in with our versatile Combination3® Truck, able to handle multiple setups to complete these projects. SOLUTION: A large oxidation ditch measuring approximately 50-feet wide by 330-feet in length was the first structure our crew tackled. While this oxidation

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February 18, 2020

Case Study: Davie, FL – 20-Foot High Tank Cleaned While in Full Operation

Problem: A wastewater treatment facility located in the Town of Davie, FL was experiencing increased energy costs due to reduced capacity and treatment efficiency from accumulated sand and material in their infrastructure. Solution: In early 2018, the facility sought assistance from U.S. Submergent Technologies (USST) to remove the material as part of the Town of Davie’s Capital Improvement Program, a facility which handles an average daily flow of around 3MGD. Using USST’s extended boom and Combination3® technology, the material removed was immediately ready for disposal. With jetter, vacuum, downhole pump and 49-foot knuckleboom fully integrated on one chassis, USST’s Combination3® technology delivers a powerful punch in the submergent cleaning industry. No additional equipment

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February 18, 2020

Case Study: Tampa, FL – Taking a 115 Degree Turn Under a River: 70-CY Removed from 660-Feet of Pipe

Problem: A 300-foot section of interceptor sewer pipe running alongside the Hillsborough River in the City of Tampa was experiencing reduced capacity due to a buildup of sand and grit. Access to the interceptor pipe was an issue due to the hard 115 degree turn of the connecting siphon. Solution: In mid-2018, the City of Tampa sought assistance from U.S. Submergent Technologies (USST) to remove the material. USST setup downstream on the southeast bank of the Hillsborough River. In order to access the 300-foot 48-inch diameter interceptor sewer pipe, the USST crew had to maneuver through a 360-foot 36-inch diameter siphon and parallel 20- inch

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February 18, 2020

Case Study: Tallahassee, FL – One Truck, One Tool 23-Foot Deep Lift Station Cleaned While in Operation

Problem: Tallahassee’s Summerbrooke 23-foot deep lift station was due for scheduled maintenance, needing both FOGs on the surface and sand and grit on the bottom removed. Solution: USST’s patented Combination3® truck with extended boom, downhole pump, and jetter mobilized to the site, and allowed crew to remove debris from both the surface of the water and bottom of the structure without additional equipment or repositioning. USST utilizes downhole pumping (in submerged or normal flow) or vacuum (in dry or low flow) as required and is equipped to switch between the two methods in any circumstance, with minimal downtime. The USST

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February 18, 2020

Case Study: Port Arthur, TX – Petroleum product successfully cleaned from shipping barge

Problem A shipping barge berthed at Port Arthur, TX, had a hardened heavy oil/asphalt petroleum product at the bottom of its three compartments of over 30,000 barrels of capacity (total). The client had been trying to remove the material for several months, without success. Because the product had been settled for some time, it had the consistency of rubber and could not be easily removed. Beginning in December of 2013, numerous unsuccessful attempts at cleaning the barge had been made, but nothing seemed to work. Solution In July 2014, the barge owners contacted U.S. Submergent Technologies – TX (USST) to

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