Whitepapers

Cloevis Biofilm Removal Service (Cloevis BRS) is an innovative technology offering that removes the biofilms that adhere to the inner surfaces of wastewater forcemain walls, including the underlying Sulfate Reducing Bacteria (SRB) that produce hydrogen sulfide. As a result, gaseous hydrogen sulfide (H₂ S) production is eliminated. The treatment requires...
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Project Scope

A large stainless steel and titanium pickling and finishing company had an issue with visible NOx fumes discharging out of one of their Midwest facilities. The plant had been tasked with the elimination of the fumes that were being generated from their various pickling baths they utilize. Visible...
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Project Scope

A power plant on the West coast was experiencing problems with its large, open-circuit cooling tower system. Excessive bacterial growth in the tower was leading to solids accumulation within the tower’s fill and an increasing frequency of TSS excursions in their blow down discharges to the local municipal...
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ABSTRACT

San Diego’s Point Loma WWTP is a 160 MGD (240 MGD permitted), 100% advanced primary treatment plant that has historically used iron salts for collection system sulfide control and chemically enhanced primary treatment. Beginning in 2006, a PRI-SC^® (Peroxide Regenerated Iron – Sulfide Control) program was implemented by adding...
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Introduction

The use of hydrogen peroxide (H₂O₂) as a pre-oxidant in municipal drinking water treatment is well documented and has been practiced for over 15 years. Historical applications of H₂O₂ in drinking water have been for taste and odor control, hydrogen sulfide removal, iron removal and ozone enhancement/destruction. With the...
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This paper presents a systematic, step-by-step approach to assist utilities in developing an effective, priority-driven, sulfide and corrosion management plan for their collection systems. Along with aging infrastructure, utilities are faced with problems with high hydrogen sulfide and corrosion in their collection systems. One of the main challenges in addressing...
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Abstract

The transition from splash fill and ACB fill to cellular plastic “high efficiency” film fill in cooling towers has reduced capital and operating costs. However, the generally tight and tortuous path that provides exceptional contact between air and water in these fills also makes them highly prone to fouling....
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NOx Control with Hydrogen Peroxide

This proprietary technology introduces diluted H₂O₂ into the NOx absorber during start-ups to reduce emissions of NOx compounds such as NO and NO₂. Removal of >90% is achieved, with the NOx being converted to high quality HNO₃ product. The process is offered under license and...
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Two nitrate products producers were looking for a solution to their visual NOx emission plumes during frequent plant start-ups that would satisfy both public and regulatory expectations.

USP Technologies was brought in to design a proprietary technology solution which introduces dilute H2O2 into the NOx absorber during start-ups to reduce...
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ABSTRACT

The City of Tolleson, Arizona operates a 44.7 cubic meter per hour (m3/hr) [17 million gallon per day (mgd)] capacity, wastewater treatment plant (WWTP). Several residential and commercial developments have been built within ó kilometer of the Plant and odor complaints have increased. The Plant-wide odor control study was...
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