Public Works: Water Treatment & Testing

The dollars and sense of disinfection byproduct compliance

Tue, 8 Jan 2013 03:02:32 EST

Granular-activated carbon may be the ideal solution for removing organic material from water.

Power to the pupils

Sat, 22 Sep 2012 12:51:54 EST

Florida student engineers help design the nation's first LEED Gold-certified water treatment facility.

Desal plant permit approved

Sat, 22 Sep 2012 12:52:22 EST

Regulators for Southern California have approved an amended National Pollutant Discharge Elimination System (NPDES) permit allowing a Huntington Beach facility to turn seawater into drinking water. Connecticut-based firm Poseidon Resources is proposing the 50-mgd desalination plant on a 12-acre site next to a coastal power plant adjacent to a state beach. Originally allowing the facility to operate in unison with the colocated power plant, the revised permit allows the facility to operate when the power plant is temporarily shutdown or lacks sufficient seawater volumes to meet the desal facility's intake requirements.

Water quality testing enters the digital age

Sat, 22 Sep 2012 01:05:20 EST

North America's third-largest UV plant opens

Sat, 22 Sep 2012 01:43:23 EST

Real-time Ph/ORP measurements

Sat, 22 Sep 2012 01:48:38 EST

0-30 mg/L total nitrogen analysis

Mon, 24 Sep 2012 02:37:14 EST

The CA-6-14-A allows for a UV digestion and colorimetric-based analysis of total nitrogen and uses photometric differential absorbance to analyze 20 other parameters including aluminum, iron, phosphate, silica, and sulfate. The unit offers ±2% repeatability on absorbance value when turbidity is less than 80 NTU, and drift of ±2%/month on absorbance measurement. It weighs less than 40 lbs. and operates in temperatures ranging from 41° to 122° F.

Watchful eye

Sat, 22 Sep 2012 02:22:53 EST

How to keep consumers apprised of unregulated compounds without creating a panic.

The next step in ozone purification

Mon, 24 Sep 2012 04:11:57 EST

In 1989, United Water New Jersey's Haworth plant was one of the first nationwide to incorporate ozone — a chemical-free purification process that recycles oxygen back into the atmosphere — into its process treatment train. While the newly emergent technology resolved complaints regarding taste and odor, two decades later managers faced another challenge: the public's focus on the environmental impact of infrastructure operations.

North America's largest desalination plant formally approved

Mon, 24 Sep 2012 03:08:12 EST

Though it's been approved to supply local utilities since 2008, Tampa Bay Water's 25-mgd seawater desalination facility had to pass four performance tests before receiving $31.25 million that the Southwest Florida Water Management District had pledged to remediate the facility. All four tests have been successfully completed.

Using ozone for water treatment is an increasingly attractive complement to other processes.

Fri, 7 Sep 2012 01:33:21 EST

Although it's been used in water treatment for more than a century, ozone is becoming an increasingly attractive option for drinking water systems nationwide.

EPA states sign data-sharing agreement

Thu, 6 Sep 2012 10:22:51 EST

State regulators could start electronically sharing large volumes of water system compliance monitoring data with the US Environmental Protection Agency annually, under an agreement signed in October.

Regulation Unnecessary for Potential Contaminants

Fri, 7 Sep 2012 10:49:19 EST

A Fitting Solution

Fri, 21 Sep 2012 03:47:58 EST

Although less than 2% of the nation's drinking water plants use membranes for filtration, Manitowoc Public Utilities in Wisconsin and the Kennewick Public Works Department in Washington are using the technology to produce additional clean water without significant additional expense.

‘Green’ Cleaning System Saves Time, Money

Fri, 21 Sep 2012 03:41:12 EST

Water Journeys from Sea to Sink

Wed, 5 Sep 2012 11:07:27 EST

Wholesale supplier Tampa Bay Water has begun selling water produced by the nation's largest reverse-osmosis seawater desalination facility. So far, the customers are public utilities in Florida's Hillsborough, Pasco, and Pinellas counties and the cities of New Port Richey, St. Petersburg, and Tampa.

To screen or not to screen?

Wed, 5 Sep 2012 11:02:20 EST

California is not Alone

Wed, 5 Sep 2012 11:03:21 EST

Many other coastal states, such as Florida, Texas, Hawaii, Georgia, Virginia, North Carolina, and Louisiana face unprecedented drought and shortages of traditional water resources such as lakes, fresh water aquifers, and rivers.

Sea of Life

Wed, 5 Sep 2012 11:05:13 EST

The California desalination initiative is expected to yield more than 20 new projects statewide that would supply 400 to 500 mgd of new drinking water by 2020 and provide up to 10% of the state's total water demand by 2030.

Water Treatment goes Green

Wed, 5 Sep 2012 06:54:07 EST

Gone are the days when “green building” meant modest structures made with recycled products. The term now applies to modern marvels of construction in all areas of public infrastructure.