Archive: Water

The EPC contractors should design the plant that best fits the users’ selected chemistry program. Courtesy: Colleen Scholl, HDR Inc.

Select Boiler Chemistry in the Design Phase of Project Life

On many combined cycle projects, the major decisions about boiler chemistry are left until after the plant has been designed, equipment is procured, and construction is well underway. However, the best time to make these chemistry decisions is in the design phase of the project. That enables the engineering, procurement, and construction (EPC) contractor to […]

Courtesy: EEI

Water Use Down Drastically at U.S. Power Plants

Water withdrawn by U.S. steam-driven power generators fell 18% in 2015 compared to 2010, owing largely to plant closures, coal-to-gas fuel switching, and the use of more water-efficient cooling system

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A Captive Power Plant’s Quest for Reliability

An aluminum smelter in Odisha, India, built a 900-MW coal-fired captive power plant for its own power consumption. Though the plant features new generation turbogenerator sets, it was completed on time and on

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Dry Fork: A Model of Modern U.S. Coal Power

Dry Fork Station began commercial operation as a swath of older, less-efficient U.S. coal plants contemplated retirement amid a flood of environmental rules. Designed with foresight, this quintessential modern

In the United Arab Emirates, demand for power and water are inextricably linked. One of its newer and larger plants, the Mirfa Independent Water and Power Plant—which has a power capacity of 1.6 GW and produces 52.5 million gallons of water per day—integrates the newest iterations of power generation and desalination technologies. Courtesy: ENGIE

Mirfa IWPP Doubles Water, Triples Power Capacity

In the United Arab Emirates, demand for power and water are inextricably linked. One of its newer and larger plants, the Mirfa Independent Water and Power Plant—which has a power capacity of 1.6 GW and

Boiler chemical cleaning

Test Your Knowledge: Monitoring and Treatment of Closed-Loop Cooling Water Systems

There are often multiple closed-loop water cooling systems installed in a power plant. Chances are good that they cool or control temperature on some very critical components. It can be easy to ignore these systems because they are usually quite reliable. By its very nature, when a closed-loop system remains closed and operates properly for an extended period of time, it is often […]

December 2000—Milledgeville, Ga.: About 35,000 gallons of wastewater laden with coal ash is released from Georgia Power’s Plant Branch into Lake Sinclair when a mechanical failure of an isolation valve causes water from an ash pond to be siphoned back and discharged through the cooling water tunnel system into the lake. Plant Branch has since been retired to meet environmental rules, though the EPA continues to scrutinize three of its five coal ash ponds, which have received a significant or high hazard rating. Courtesy: Lake Sinclair Blog

Why the EPA’s Proposed Coal Ash Rule Is Concerning

Over the past decade, together with my students and colleagues at Duke University and other academic institutions, I have conducted scientific research and published 13 scientific articles on different aspects

December 2000—Milledgeville, Ga.: About 35,000 gallons of wastewater laden with coal ash is released from Georgia Power’s Plant Branch into Lake Sinclair when a mechanical failure of an isolation valve causes water from an ash pond to be siphoned back and discharged through the cooling water tunnel system into the lake. Plant Branch has since been retired to meet environmental rules, though the EPA continues to scrutinize three of its five coal ash ponds, which have received a significant or high hazard rating. Courtesy: Lake Sinclair Blog

EPA Sets Schedule for Potential ELG Rule Revision

The Environmental Protection Agency (EPA) has issued an official timeline for rulemaking that would potentially revise the Obama administration’s 2015 effluent limitations guidelines and standards (ELGs) for steam electric power plants. In its May 2-released Final 2016 Effluent Guidelines Program Plan, the EPA said it will potentially revise the stringent Best Available Technology (BAT) effluent […]

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Upheaval and Innovation in Wastewater Management

Regulatory uncertainty, changing resources, and an industrywide drive to cut costs and boost flexibility and efficiency are among a growing list of challenges that are prompting new approaches to treat power