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<p class="MsoNormal"><b><span style="font-size:15.0pt;font-family:"Arial","sans-serif";color:#990000">Sewage Lagoons Remove Most -- But Not All – Pharmaceuticals<o:p></o:p></span></b></p>
<p class="MsoNormal"><b><span style="font-size:12.0pt;font-family:"Times New Roman","serif";color:#990000"><o:p> </o:p></span></b></p>
<p class="MsoNormal"><i><span style="font-size:12.0pt;font-family:"Times New Roman","serif";color:#666666">Feb. 14, 2013</span></i><span style="font-size:12.0pt;font-family:"Times New Roman","serif";color:black"> — 2012 marked the 40th anniversary of the Clean
Water Act, which established regulations for the discharge of pollutants to waterways and supported the building of sewage treatment plants. Despite these advances, sewage remains a major source of pharmaceuticals and personal care products (PPCPs) and naturally
occurring hormones found in the environment.<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Times New Roman","serif";color:black">Many rural communities in the United States use aerated lagoon systems to treat their wastewater. The wastewater is pumped into at least one humanmade aerated
lagoon, in which oxygen-loving and anaerobic microorganisms remove many of the contaminants. The water is then pumped into a series of other lagoons. Finally, the resulting water, known as the effluent, is discharged directly into a receiving stream.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Times New Roman","serif";color:black"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Times New Roman","serif";color:black">The drugs, chemicals and hormone contaminants such as ibuprofen, caffeine and ethinyl estradiol from urban sewage treatment plants have been studied and monitored
widely, but their occurrence in rural lagoon treatment systems is often overlooked.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Times New Roman","serif";color:black"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Times New Roman","serif";color:black">In a new study led by Wei Zheng, a senior research scientist at the Illinois Sustainable Technology Center and an adjunct faculty member in the University
of Illinois department of natural resources and environmental sciences, researchers determined the effectiveness of rural lagoon systems at removing these compounds from wastewater. The research was conducted jointly with the Illinois State Water Survey. The
study appears in the journal Science of the Total Environment.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Times New Roman","serif";color:black"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Times New Roman","serif";color:black">Scientists collected water samples in September and November from a rural wastewater treatment plant located in a small town in Illinois. The facility treats
sewage wastewater in two aerated lagoons, using a sand tank for filtration. The effluent streams into a creek that flows into the Mackinaw River. The researchers collected samples from various steps during the treatment process for analysis.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Times New Roman","serif";color:black"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Times New Roman","serif";color:black">The researchers then tested the samples for the presence of 21 commonly used PPCPs and hormones, including caffeine and ibuprofen.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Times New Roman","serif";color:black"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Times New Roman","serif";color:black">The team found that the lagoon treatment system reduced concentrations of most of the tested compounds. The overall removal efficiency ranged from 88 to 100
percent in September, except for the compound carbamazepine, a drug used for the treatment of epilepsy and bipolar disorder that is notoriously difficult to remove from wastewater. There were no detectable steroid hormones in the aerated lagoons and effluent.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Times New Roman","serif";color:black">Interestingly, the samples collected in November contained higher concentrations of all detected PPCPs than the samples collected in September. According to
Zheng, this is most likely because the microorganisms that break down the compounds work best in warm weather.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Times New Roman","serif";color:black"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Times New Roman","serif";color:black">Although the efficiency of rural sewage treatment lagoons is relatively high, this study shows that there is a significant increase in the occurrence of PPCPs
in surrounding watersheds with the effluent discharge, which could change the rural aquatic environment.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Times New Roman","serif";color:black"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Times New Roman","serif";color:black">"Some compounds are easy to degrade and remove using this lagoon treatment system, but some compounds are persistent," Zheng said. "When these persistent compounds
are introduced into the environment through effluent discharge, they may contaminate water sources and affect the watershed ecosystem."<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Times New Roman","serif";color:black">Because people eventually consume this water, the presence of PPCPs and steroid hormones is a concern, Zheng said.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Times New Roman","serif";color:black"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Times New Roman","serif";color:black">"Pharmaceutical residues are usually detected in the aquatic environment at very low concentrations, below their therapeutic doses employed for medical purposes,"
he said. "However, long-term chronic exposure to these emerging contaminants in water supplies may jeopardize human and aquatic habitat health."<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Times New Roman","serif";color:black">The research also is useful for addressing the potential risks of using rural sewage effluent for crop irrigation, especially as the occurrence of droughts
increases, Zheng said.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Times New Roman","serif";color:black"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Times New Roman","serif";color:black">More research needs to be conducted to understand the environmental fate and negative effects of PPCP and hormone contaminants, but for now, Zheng is happy
that the information he and his team found will benefit rural communities to properly utilize lagoon treatment systems to handle their wastewater and help state and federal agencies formulate prudent regulatory programs on agricultural irrigation of rural
sewage effluents.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Times New Roman","serif";color:black">"The (federal Environmental Protection Agency) doesn't have regulations or management strategies for controlling PPCP and hormone contaminants released from
sewage effluents, so our information can raise the public's attention, help the EPA develop the best management strategies and thereby minimize the loading of these emerging contaminants into the environment and promote the safe and beneficial reuse of treated
wastewater in U.S. agriculture," Zheng said.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Times New Roman","serif";color:black"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Times New Roman","serif";color:black">The Illinois Sustainable Technology Center is part of the Prairie Research Institute at the U. of I.<o:p></o:p></span></p>
<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black">Story Source:</span></b><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black">The above story is reprinted from
<a href="http://news.illinois.edu/news/13/0214sewage_lagoons_WeiZheng.html" target="_blank">
<span style="color:#000099;text-decoration:none">materials</span></a> provided by
<a href="http://www.uiuc.edu" target="_blank"><b><span style="color:#000099;text-decoration:none">University of Illinois at Urbana-Champaign</span></b></a>.
<o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-left:53.25pt;background:#EEEEEE"><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black">University of Illinois at Urbana-Champaign (2013, February 14). Sewage lagoons remove most -- but not all -- pharmaceuticals.
</span><i><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black">ScienceDaily</span></i><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black">. Retrieved February 15, 2013, from http://www.sciencedaily.com</span><span style="font-size:1.0pt;font-family:"Arial","sans-serif";color:black">
</span><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black">/releases/2013/02/130214120616.htm<o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-left:4.5pt;background:#EEEEEE"><i><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black">Note: If no author is given, the source is cited instead.</span></i><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Times New Roman","serif";color:navy">Deborah L. DeBiasi</span><span style="font-family:"Times New Roman","serif";color:navy"><br>
</span><b><span style="font-size:10.0pt;font-family:"Times New Roman","serif";color:navy">Email: Deborah.DeBiasi@deq.virginia.gov</span></b><b><i><span style="font-size:10.0pt;font-family:"Times New Roman","serif";color:red"><br>
</span></i></b><span style="font-size:10.0pt;font-family:"Times New Roman","serif";color:navy">WEB site address:
<a href="http://www.deq.virginia.gov/">www.deq.virginia.gov</a></span><span style="font-family:"Times New Roman","serif";color:navy"><br>
</span><span style="font-size:10.0pt;font-family:"Times New Roman","serif";color:navy">Virginia Department of Environmental Quality</span><span style="font-family:"Times New Roman","serif";color:navy"><br>
</span><span style="font-size:10.0pt;font-family:"Times New Roman","serif";color:navy">Office of Water Permit and Compliance Assistance Programs</span><span style="font-family:"Times New Roman","serif";color:navy"><br>
</span><span style="font-size:10.0pt;font-family:"Times New Roman","serif";color:navy">Industrial Pretreatment/Whole Effluent Toxicity (WET) Program</span><span style="font-family:"Times New Roman","serif";color:navy"><br>
</span><span style="font-size:10.0pt;font-family:"Times New Roman","serif";color:navy">PPCPs, EDCs, and Microconstituents<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Times New Roman","serif";color:navy"><a href="http://www.deq.virginia.gov/Programs/Water/PermittingCompliance/PollutionDischargeElimination/Microconstituents.aspx">http://www.deq.virginia.gov/Programs/Water/PermittingCompliance/PollutionDischargeElimination/Microconstituents.aspx</a></span><span style="font-size:10.0pt;font-family:"Times New Roman","serif";color:navy"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Times New Roman","serif";color:navy">Mail: P.O. Box 1105, Richmond, VA 23218</span><span style="font-family:"Times New Roman","serif";color:navy"><br>
</span><span style="font-size:10.0pt;font-family:"Times New Roman","serif";color:navy">Location: 629 E. Main Street, Richmond, VA 23219</span><span style="font-family:"Times New Roman","serif";color:navy"><br>
</span><span style="font-size:10.0pt;font-family:"Times New Roman","serif";color:navy">PH: 804-698-4028 FAX: 804-698-4032<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Times New Roman","serif";color:red">Next DEA Drug Take Back event is April 27th, 2013 10- 2<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Times New Roman","serif";color:red">See
<a href="www.dea.gov"><span style="color:red">www.dea.gov</span></a> for locations</span><span style="font-size:10.0pt;font-family:"Times New Roman","serif";color:navy"><o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
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