Eliminating Macro-Fouling


CURE Chemicals in Renewables and Power


Gulf Power Station solved debilitating macro-fouling challenge with Gradiant's innovative quaternary compound, leading to an ongoing clean operation and equipment, zero shutdowns, >20X ROI, and 25% reduced electrical consumption.

Fast Facts

Location: Gulf Region


End User: Power Generation


Application: Cooling System 


Solution: Once Through Cooling


Industry: Renewables & Power


Feedwater Source: Seawater


CURE Chemical: Biocide

The Challenge

A Gulf Region Power Station grappled with a persistent macrofouling issue in its cooling system. Invasive aquatic species were causing substantial blockages and impairments, diminishing flow in the intake systems and efficiencies in downstream heat exchangers. Previous attempts to address the problem involved an increase in chlorine dosages. However, this approach risked compromising system performance and breaching the strict 0.2 ppm discharge limit. The electro-chlorinators struggled to meet demand without substantial system upgrades.

The Solution

Gradiant stepped in with a nuanced solution, leveraging a more effective strategy that would bypass the species’ natural chemoreceptors, evolved to sense chlorine and other toxins to prevent intake. Developing a dual program of chlorine and a specialized quaternary compound, developed with unique characteristics undetectable to the species, proved an efficient alternative. Gradiant optimized the dosage rate and frequency, ensuring the systematic elimination of macrofouling.

The Benefits

After six months of implementation, thorough visual inspections of cooling water pumps revealed a significant improvement. Pump internals were found to be clean, devoid of any macrofouling that had previously plagued the system. This not only enhanced cooling system efficiency and reliability but also eliminated the need for unplanned shutdowns for cleaning. Even during planned maintenance, the time required for cleanings dramatically decreased, resulting in substantial labor savings and a reduction in safety hazards associated with high-pressure equipment and diver interventions.

Impact Stats


of uninterrupted operation


unscheduled shutdowns

>20 X

return on investment, (factoring in time and labor savings, safety hazard removal, and more)


reduction in electricity consumption for intake pumps, surpassing industry averages.


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This document is for general information only. No warranty or guarantee whatsoever is given or implied and Gradiant is not bound by or liable for or by the information contained herein. Customer has the sole responsibility to determine whether the information in this document are appropriate for Customer’s use, including without limitation actual site, geographical, and plant conditions, specifications, requirements, disposal, applicable laws and regulations. This document is the intellectual property of Gradiant, including but not limited to any patent or trademark contained in this document. Distribution of this document is not and does not imply any transfer of Gradiant’s intellectual property.



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