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Case Studies

We Know What Our Products Can Do Because We Know What They've Already Done.

Case Study Relating to H2S Odors

A Fortune 50 company located in California experienced long term problems with H2S odors which developed within their private sewer lines at their main corporate facility. After dealing with a consulting company for 2 years with no resolution, United Laboratories, Inc. was referred to them by the…

Increase in Flow for Small Plant Leading to EPA Fines

A small town in Arizona, directly on the Mexican border is held to zero deviation tolerance levels with their effluent standards because their effluent flows directly across the border. The stringent EPA regulations and monitoring were leading to fines as this small town began to grow.

Wastewater Treatment, Equalization Tank Odors

A Florida wastewater treatment plant had a recurring process problem with odors that seemed to fluctuate with different times of the year and the weather, but never completely went away. The odors generated numerous complaints from the public. After working with other companies with no lasting…

Wastewater Collections, Excessive H2S Levels

A large metropolitan city in the Midwest was experiencing excessive H2S gas levels in an area of its wastewater collection system. The resulting odors brought in numerous complaints.

Wastewater Treatment, BOD and TSS Reduction

A small town in Alabama requested help in determining how they could reduce their biochemical oxygen demand (BOD) and total suspended solids (TSS) to meet their discharge permit levels.

Wastewater Lagoons, Diminishing Capacity

A wastewater lagoon system in the state of Arizona was originally designed to treat 800,000 gallons of wastewater per day. After about 10 years in use, the capacity of the lagoon was diminishing and they could only treat about 480,000 gallons per day – a 40% reduction in capacity. The actual…

Wastewater Lagoons, Severe Odors

A small city in Illinois had a severe odor problem. The city itself had become known for its odor which could be smelled some days for miles around. A new mayor had in fact been elected based on his promise to get rid of the odors.

Wastewater Lagoon – Extreme Sludge Accumulation

A wastewater lagoon system located in southern Alabama was originally designed to treat a flow of 500,000 gallons per day. The actual flow averages 350,000 gallons per day. The problem they were experiencing was high TSS in the effluent.

Pilot Study Leads to City-Wide Pretreatment Program Approval

A large publicly owned treatment works(POTW) in Oklahoma needed to study the United products in use to determine if they would pass the standards of its Industrial Pretreatment Program. The program was in accordance with the Clean Water Act and the EPA's General Pretreatment Regulations (40 CFR…

Municipal Wastewater Treatment – RAS

A large U.S. municipal wastewater treatment plant treats 70 MGD through two parallel 35 MGD flow trains.

Municipal Wastewater Treatment – RAS

Background - A large U.S. municipal wastewater treatment plant treats 70 MGD through two parallel 35 MGD flow trains.

Municipal Wastewater Treatment -Sludge Dewatering

A 5.7 MGD treatment works in Spain is located in a holiday and resort area. Blended primary/secondary biosolids are thickened and dewatered using centrifuges at a flowrate of 26 gpm, 10 hours/day. The dewatering room is vented to a bio-filter scrubber.

Municipal Wastewater Treatment – Biosolids Odor Control

A 75 MGD U.S. water reclamation plant serves a city of 400,000 population. The treatment process stabilizes biosolids in 4 anaerobic digesters. After years of use, the lids on two of the digesters collapse forcing emergency repairs.

Municipal Wastewater Treatment – Headworks Sulfide Control

There is a concern about worker safety at a small European wastewater plant. The plant receives primarily residential wastewater at a flowrate of 0.95 MGD. The first process unit is a 32,000 gallon flow equalization tank (nominal retention time - 48 minutes). From there it is pumped to coarse…

FOG Control in High Calcium Environment

A U.S. military base was experiencing excessive grease issues in the main lift station. This lift station pumped directly to the local municipal system. A state agency inspected the lift station and mandated that a program be instituted to maintain it to prevent blockages, odors, equipment failure…

Bellwood - 3800 Feet of Constricted Sanitary Lines

City of Bellwood, IL. Had 3800 feet of sanitary lines, catch basin and lift stations that had excessive build up in them. Estimate cost to remove the lines and replace from several engineering firms at $1.1 million dollars. Bellwood needed a different solution. WTUnited was asked to advise on the…