WE&T Magazine

WET_cover1_September13-90Water 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.

 


September 2013, Vol. 25, No.9

Featured Articles

Chicago to host WEFTEC 2013

WEFTEC preview art WEFTEC® — which will be held Oct. 5–9 in Chicago — is known for being the largest North American event of its kind. It draws more than 17,000 attendees each year. This year’s technical program will be one of the most comprehensive ever, offering 26 hands-on workshops, more than 140 sessions, and 10 facility tours. The exhibition will feature an estimated 1000 companies occupying more than 27,870 m2 (300,000 ft2) of space on the show floor. This year’s WEFTEC also features a number of new and enhanced events. Read More 

 

Greensboro experience

Feature 1 art In 2007, the City of Greensboro, N.C., began a project to add a second fluid-bed wastewater residual incinerator at its T.Z. Osborne Water Reclamation Facility. The project would provide the capacity to handle an additional 59 dry Mg/d (65 dry ton/d) of primary solids — the existing fluid-bed incinerator can handle 54 dry Mg/d (60 dry ton/d) — and to replace the existing fluid bed during scheduled maintenance. 

 

You’ve got grit-slurry problems. Now what?

feature 3 art

The purpose of preliminary treatment systems is to remove debris and grit from influent and protect downstream processes from these damaging materials. While screening devices remove debris, grit-removal processes remove smaller grit particles. Grit particles that accumulate and concentrate at the bottom of a grit-removal system are commonly referred to as “grit slurry.” 

Ironically, a process that is intended to prevent or reduce downstream maintenance often is plagued with maintenance issues. Frequent problems include plugged grit-slurry collection sumps, plugged grit-slurry piping, failed grit-slurry pumps, and plugged grit-slurry concentrators.   

 

News

Measuring success by the half-inch

news

Milwaukee introduces green infrastructure plan 

When it rains, it pours — except in Milwaukee. 

Read more

Coming in the next issue:
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Grains of knowledge

At the outset of any project, someone is likely to say “First things first!” and then suggest where to begin. At a water resource recovery facility (WRRF), the first thing that happens to influent (usually) is screening and grit removal; yet rarely is grit and its effect on the overall treatment process considered first. 

The October issue has two feature articles that put grit in the proper perspective. The first focuses on analyzing the grit entering a facility. Grit characterization and performance testing, if conducted properly, enable professionals to determine how much grit is there — and more importantly — how it will behave. This information can help designers, owners, and operators better understand their challenges and arrive at effective solutions.