WE&T Magazine

September CoverWater 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 2009, Vol. 21, No.9

Featured Articles

Greener Plants

sustain.jpg Designing and operating a sustainable wastewater treatment plant
While big industries capture the public’s attention as likely candidates to minimize their environmental footprints, there is much that wastewater treatment plants can do to achieve the same results.


Fresh Is Not Always Best

Fung_Art.jpg An evaluation of glucose-glutamic acid stability

According to quality control procedures, the glucose-glutamic acid standard for the biochemical oxygen demand test must be prepared fresh just before analysis. However, laboratory testing shows that GGA solutions remain stable for weeks.

In the interest of efficiency, these findings indicate that the procedure for the preparation of BOD certification standards with respect to requirement for the daily preparation of GGA should be re-evaluated.


WEFTEC Preview

WEFTEC.jpg Now More Than Ever

Find out about just a few of the events and opportunities that attendees at WEFTEC®.09 will experience. In this preview section issue, first you will find out a bit about Mike Magee, who will deliver the keynote address at the Opening General Session. Then, you can follow the flow from flush to final effluent and beyond to get a sense of the educational opportunities available in the technical program. Finally, you  can get a taste what's to come in the Operations Challenge competition.

Read More.




The Verdict Is In


Florida citrus trees prosper when irrigated by reclaimed wastewater.
After more than two decades of being irrigated with treated municipal wastewater, the citrus groves of central Florida have reached a verdict. They like it. They really like it.

That’s the finding of a long-term study conducted on behalf of Water Conserv II, a municipal reclaimed-water project operated by the city of Orlando and surrounding Orange County since 1986.

Read more

Coming in the next issue:

Coming in the October Issue
Comprehensive Maintenance: Collections Systems to Solids Handling

Good maintenance is necessary to keep flows moving smoothly and prevent systems failures. Attention needs to be paid beginning at sewer laterals all the way through solids dewatering. After you test your knowledge of collection system maintenance with the certification quiz, find out the steps needed to troubleshoot and underperforming pump station. On the solids side of the plant, read about advances in using grease-lubricated bearings in large centrifuge decanters.

Good Grease

Faced with an aging cogeneration system and rising energy costs, the City of Milbrae, Calif., needed to find an economically viable replacement system. By adding inedible kitchen grease to its anaerobic digester, the facility was able to significantly improve biogas production, increasing total electricity produced by 76%; improve solids dewaterability; and reduce solids volume by 33% and weight by 28%. Find out how Milbrae achieved these exceptional results while also helping alleviate the city’s FOG problem.

Also in This Issue:
  • Using ozone to remove microconstituents
  • Improving grit tank performance with CFD modeling
  • A free planning tool for selecting wastewater treatment technologies