WE&T Magazine

WET_cover1_July15_90Water Environment & Technology (WE&T) is the premier magazine for the water quality field. WE&T provides information on what professionals demand: cutting-edge technologies, innovative solutions, operations and maintenance, regulatory and legislative impacts, and professional development.

 


July 2015, Vol. 27, No.7

Featured Articles

Stacking up treatment at the log yard

Feature 1 art Nearly 130 million board feet of logs moves each year through the marine terminal at the Port of Olympia in Washington State. Most of this 26-ha (65-ac) site is devoted to 7.6-m-high (25-ft-high) stacks of logs, log debarkers, and immense log-loading machines. Every log that moves through the port leaves behind bark and other organic material that accumulates and is washed into south Puget Sound by rain.

 

Risk reduction

Feature 4 art As part of a facility expansion at the Skyway Wastewater Treatment Plant located in Burlington, Ontario, Canada, currently nearing completion, dissolved-air-flotation (DAF) waste-activated-sludge (WAS) thickeners were replaced with rotary drum thickeners (RDTs). To address challenges with construction sequencing, the region invested in the temporary installation of one of the RDTs. This innovative solution has saved at least $1 million and decreased its risk exposure to schedule delays and process upsets. 

 

News

And not a drop to drink...

News

California tries to head off water crisis by mandating strict water reductions for utilities, but some say it is still too little   

Drought in the U.S. Southwest is not rare, but California has endured a particularly bad stint this year thanks to low rainfall and the lowest snowpack ever recorded. Because of this, in April, California Gov. Edmund G. Brown Jr. announced a mandatory, statewide water reduction of 25% for water agencies and the streamlining of investments in new technologies to make California more drought resistant.  

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Coming in the next issue:
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More paths to choose

The scope of water and wastewater projects has increased from the delivery of clean water and removal of wastewater to protecting natural systems; incorporating energy-efficient operation; recovering water, nutrients, and other resources; and safeguarding public health. This expansion in scope also has led to progress in how these things can be done. New project delivery methods are offering more flexibility and faster results for the water sector. 

For example, the City of Casselberry, Fla., sought an alternate project-delivery method when faced with strict new disinfection byproduct limits. To construct a large and important project quickly, the city chose the construction-manager-at-risk delivery method to take advantage of value engineering, construction schedule savings, and open communication among the facility owner, engineer, and contractor.
 
Likewise, the town of Oakland, Maine, faced several obstacles regarding its water resource recovery facility. New regulations meant that relicensing the town’s effluent discharge permit would be challenging. The most obvious choice was to build a new treatment facility, but the cost of doing so would have been much too high for Oakland. 

Instead, Oakland looked to its neighbors. The town created an interlocal agreement for sewer service with the nearby Waterville (Maine) Sewerage District. The agreement saved money for Oakland and generated new revenue for Waterville, which was able to take advantage of its unused capacity.
  


Also in this issue   

  • A winning combo. Scientists combine algae, bacteria, and wastewater to form a novel treatment process that saves energy, removes nitrogen, and produces biofuel.   
  • Whole lotta’ shaking going on. USGS scientists develop the first model to help predict induced earthquakes caused by deep-well injecting.   

 

    

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