water

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 […]

As water demand soars in every corner of the world amid widespread drought and water scarcity concerns, recovery and recycling of wastewater is increasingly becoming a valuable solution to alleviate pressures

Reverse osmosis (RO) systems offer power plant owners and operators a reliable and well-proven water treatment solution. However, designing and caring for an RO system requires a thorough understanding of a

The U.S. Supreme Court unanimously reversed and remanded a rule the Environmental Protection Agency (EPA) and the U.S. Army Corps of Engineers rolled out in 2015 that asserts federal authority over small bodies of water with a broader definition of the statutory term, “waters of the U.S.” (WOTUS). In a ruling for National Association of […]

Steam electric power plants preparing to comply with the Environmental Protection Agency’s (EPA’s) effluent limitations guidelines (ELG) and standards as they concern bottom ash transport water and flue gas desulfurization (FGD) waste streams will get—for now—a two-year reprieve under a new rule the agency finalized on September 12. The ELG rule, which was finalized by […]

In water-strapped California, managing power plant water usage is more important than ever. Southern California Edison implemented novel closed circuit reverse osmosis systems at five of its gas-fired

Regulatory agencies are becoming more and more critical of phosphorus-based water treatment chemicals because they can have a negative impact on lakes and waterways. In the past, treating cooling water with

The Edward Hyatt hydroelectric plant at the damaged Oroville Dam in northern California, shut down earlier this month after its spillway nearly collapsed, may reopen soon, officials with the California Department of Water Resources (DWR) said on March 1. The plant was forced to shut down after severe erosion from the dam’s spillway deposited large […]

Cooling towers serve the vital role of cooling water for power plant heat exchange equipment. Sustaining excellent system performance is important because a one-degree increase in water temperature can cause a 2% increase in energy usage. Proper maintenance and a few upgrades could improve a cooling tower’s efficiency, while also saving water in the process. […]

Using reclaimed water as a makeup supply for cooling tower systems has become a popular option for reducing impacts on local water resources, but it comes with its own challenges because of its unique

Power generation need not be another source of strain on diminishing freshwater resources. Well-established water reclamation technologies are enabling producers to conserve resources—and money. Meeting the

Compliance with one of the latest federal environmental regulations, the Effluent Limitations Guidelines (ELG), can be both costly and complicated. A newly available option offers features and capabilities that may make it a more attractive alternative than conventional approaches. In September 2015, the U.S. Environmental Protection Agency (EPA) finalized a new rule affecting flue gas […]

To satisfy China’s more stringent water use and air pollution rules, developers of the new 1.3-GW ultrasupercritical coal-fired Changxing Power Plant used a novel forward osmosis–based brine concentration

A severe water crisis gripping India this year has forced several of the country’s hydroelectric and thermal power plants to shut down. At least 10 of India’s 29 states have been stricken by severe drought after the monsoons failed for two seasons in a row (as of the start of July, the monsoons had still […]

When commissioning a new power plant, requirements for purified water can be large—often more than an unfinished plant can supply. When it’s time to bring in outside help, proper planning can help avoid problems and keep budgets under control. With all the complexity inherent in the commissioning of a power plant, the last thing anyone […]

Droughts attributed to the El Niño phenomenon have gripped Venezuela’s neighbor Colombia. Bogotá in April prepared to ration power and instituted mandatory reductions in consumption, warning that

Entergy Tests Fiber Optic Cables to Slash Copper Use A unique pilot under way at a substation in New Orleans, La., uses fiber optic cables in a way that could help utilities reduce the use of copper wire. But

A federal judge on Thursday halted implementation of the Clean Water Rule that is controversial for its broad definition of “Waters of the U.S.” one day before it was to go into effect, saying it was likely that the Environmental Protection Agency (EPA) overstepped its authority when it promulgated the “exceptionally expansive” rule.  Judge Ralph […]

It’s not often that a power plant upgrade improves both the environment and the bottom line. Needing to come up with a new source of cooling water for Polk Power Station, and faced with mostly expensive, environmentally questionable options, Tampa Electric came up with a solution that both secured the plant’s water supply for the […]

Broad, bipartisan energy legislation that would allocate federal funding to grid technology research and demonstration along with a number of other initiatives, including cybersecurity and the energy-water nexus, has cleared the Senate Energy and Natural Resources Committee with an 18–4 vote.  The committee’s chair, Sen. Lisa Murkowski (R-Alaska), and Ranking Member Sen. Maria Cantwell (D-Wash.) […]

Thirteen states are suing the Environmental Protection Agency (EPA) and the U.S. Army Corps of Engineers over the recently finalized Clean Water Rule, which they say illegally puts the federal government in charge of a majority of water and land resources in the U.S.  North Dakota, Alaska, Arizona, Arkansas, Colorado, Idaho, Missouri, Montana, Nebraska, Nevada, […]

California’s grid gurus say they can make it through this summer, but the future may pose real problems for a hydro-heavy regional system. As the grip of California’s four-year drought tightens, will the long-running event crimp electricity generation in the state? So far, according to the California Independent System Operator (CAISO), which dispatches much of […]

Worldwide, the U.S. is the largest producer of geothermal power; however, geothermal energy provides less than 0.5% of total generation in the U.S. Given geothermal’s small piece of the U.S. electricity pie

Alloys found in the condensate and feedwater systems of power plants include carbon steel for piping, pumps, and in some cases heat exchangers. Many systems still have some copper-based alloys from admiralty

Geothermal resources have important strategic value for New Zealand, as they are able to directly supply both heat and electricity (see “New Zealand Geothermal Industry Is Poised for the Future” in this

POWER Associate Editor Aaron Larson recently interviewed LaMarr Barnes, vice president of marketing and business development for U.S. Water Services Inc. U.S. Water is a Minnesota-based integrated water treatment solutions provider that has developed a phosphorus-free cooling water treatment solution, which may be beneficial for power generation companies. Many power plants add phosphate-based treatments to […]

A lack of rainfall is hitting the power industry especially hard in parts of Brazil. According to the U.S. Energy Information Administration (EIA), the country depends on hydroelectricity for more than 75% of its electric power supply (Figure 2). But with reservoir levels at historic lows in some places, more electricity has been required from […]

The Electric Power Research Institute (EPRI) has teamed with Purolite Corp. to begin the commercial manufacture of a new resin for removing radioactive elements from the internal water streams of nuclear power plants. The resin, called CoSeq, increases the amount and efficiency of cobalt (Co) removal compared to conventional resins. In-plant demonstrations have shown that […]

Forced outages at Entergy’s two Indian Point nuclear units proposed by the New York Department of Environmental Conservation (DEC) to protect fish are “unnecessary” and a “terrible idea,” a company official testified at a public hearing on Tuesday.  The DEC has proposed Entergy shutter the two units for at least 42 outage days every summer […]