Navigation Links
Sewage lagoons remove most -- but not all -- pharmaceuticals
Date:2/14/2013

CHAMPAIGN, lll. 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.

Many rural communities in the United States use aerated lagoon systems to treat their wastewater. The wastewater is pumped into at least one manmade 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.

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.

In a new study led by Wei Zheng, a University of Illinois professor in the department of natural resources and environmental sciences and a senior research scientist at the Illinois Sustainable Technology Center, 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.

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.

The researchers then tested the samples for the presence of 21 commonly used PPCPs and hormones, including caffeine and ibuprofen.

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.

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.

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.

"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."

Because people eventually consume this water, the presence of PPCPs and steroid hormones is a concern, Zheng said.

"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."

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.

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.

"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.


'/>"/>

Contact: Chelsey Coombs
diya@illinois.edu
217-333-5802
University of Illinois at Urbana-Champaign
Source:Eurekalert  

Related medicine news :

1. Fibroid Treatment
2. How “Fibroids Miracle” Helps Women Remove Fibroid Naturally – HealthReviewCenter.com
3. Rats, like humans, return to drinking once punishment is removed
4. Kidneys Sometimes Removed Needlessly in Patients With Rare Genetic Disorder
5. Removing Skin Tags - How “Moles Warts Removal” Can Teach People Remove Skin Tags Permanently - Health Review Center
6. Shaft Medical San Diego Now Offers Viridis Derma KTP Laser to Permanently Remove Unwanted Spider Veins
7. Novel surgery removes rare tumor, rebuilds face and jaw
8. New device to remove stroke-causing blood clots proves better than standard tool
9. Black Patients More Apt to Have Voice Box Removed When Cancer Strikes
10. Kidney cancer patients do better when whole kidney is not removed, U-M study shows
11. Blue Door Pharma and Global Energy Markets Strike Global Export Agreement for Meningitis Vaccine and Pharmaceuticals
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Sewage lagoons remove most -- but not all -- pharmaceuticals
(Date:2/23/2017)... ... (PRWEB) February 23, ... the nation to come together to combine its favorite springtime ... its favorite fruit – apples! To celebrate National Nutrition Month, ... the “Apple Madness” bracket tournament – a five-week, five-round online ...
(Date:2/23/2017)... MN (PRWEB) , ... February 23, 2017 , ... HealthPostures, ... is sending an expert sit stand solutions representative to the Minneapolis Home and Garden ... Location for the event that is garnering national attention is the Minneapolis Convention Center. ...
(Date:2/22/2017)... ... 22, 2017 , ... Our high-octane society demands higher stands ... brain. , Power On, a mental performance enhancer from Modus Nutrition, provides scientifically ... capsule contains Cognizin® Citicoline, a branded form of the brain health nutrient citicoline ...
(Date:2/22/2017)... ... February 22, 2017 , ... Secure Exchange ... the largest network of hospitals, health information exchanges, physicians and patients, announced today ... Technology (ONC-HIT) 2015 Edition Health IT Module Certification via Drummond Group LLC, an ...
(Date:2/22/2017)... ... February 22, 2017 , ... ... advanced data analytics to accurately understand each Medicare Advantage member’s risk, identify ... given population. This new solution helps transform the HCC Risk Adjustment process ...
Breaking Medicine News(10 mins):
(Date:2/23/2017)... -- LG Innotek hat heute die weltweit erste 70 mw ... 1,5-fache des 45-mW-Moduls der Konkurrenz. UV-C LED ... 280 nm und eignet sich damit für Sterilisationsaufgaben. Es verhindert ... Das Produkt von LG Innotek erzeugt UV-Strahlung im Bereich ... ...
(Date:2/23/2017)... China , 23. Februar 2017 Im ... , eine nationale Wirtschaftszone in der südwestlichen chinesischen Provinz Guizhou, ... der Errichtung einer Innovationsplattform aktiv an der Entwicklung einer eingebetteten ... Continue Reading ... ...
(Date:2/23/2017)... COTTAGE, New York , February 23, 2017 /PRNewswire/ ... health implications arising from increasing caseload for varicose veins ... recorded across the globe are prompting the adoption of ... latest study on global endovenous laser therapy ... attention towards aftereffects of lifestyle choices and consequences of ...
Breaking Medicine Technology: