Featured Research

from universities, journals, and other organizations

Sewage treatment removes widely used home and garden insecticides from wastewater

Date:
September 12, 2013
Source:
American Chemical Society
Summary:
Even though sewage treatment plants are not designed to remove tiny amounts of pesticides, they do an excellent job of dealing with the most widely used family of home and garden insecticides, scientists report. The study focused on pyrethroid insecticides.

Even though sewage treatment plants are not designed to remove tiny amounts of pesticides, they do an excellent job of dealing with the most widely used family of home and garden insecticides, scientists have reported. Their study on pyrethroid insecticides -- used in more than 3,500 products -- was part of the 246th National Meeting & Exposition of the American Chemical Society (ACS), held in Indianapolis this week.

Related Articles


"We found that advanced sewage treatment reduced the levels of pyrethroids by more than 97 percent," said Kurt N. Ohlinger, Ph.D., who presented the results of the study. "That's a reduction to less than one part per trillion, and pretty impressive. Conventional treatment processes remove about 89 percent, something we knew from previous research. Based on these results, we do not expect the trace amounts of pyrethroids in sewage treatment plant effluent to be toxic to even the most sensitive aquatic life."

Use of pyrethrins, derived from chrysanthemum flowers, and the related synthetic pyrethroids, has been on the increase during the last decade. They are replacing organophosphate pesticides, which are more acutely toxic to birds and mammals, with uses that include home insect control, insect-repellant clothing, dog and cat flea shampoos, mosquito control and agriculture.

The growing use led Ohlinger and colleagues to check on the effectiveness of advanced sewage treatment processes in removing pyrethroids from wastewater from a sewage treatment plant. They are with the Sacramento Regional County Sanitation District in California, which was implementing advanced sewage treatment. They knew that high levels of pyrethroids in treated water (which flows out of sewage facilities and into lakes and streams) could harm aquatic life.

"Although conventional wastewater treatment processes were not designed to remove trace pyrethroid residues, we found in an earlier study of our existing treatment processes that the treatment processes were quite effective at pyrethroid removal," he explained. "We wanted to see if advanced treatment processes were even more effective. The results provide welcome reassurance."


Story Source:

The above story is based on materials provided by American Chemical Society. Note: Materials may be edited for content and length.


Cite This Page:

American Chemical Society. "Sewage treatment removes widely used home and garden insecticides from wastewater." ScienceDaily. ScienceDaily, 12 September 2013. <www.sciencedaily.com/releases/2013/09/130912143622.htm>.
American Chemical Society. (2013, September 12). Sewage treatment removes widely used home and garden insecticides from wastewater. ScienceDaily. Retrieved October 24, 2014 from www.sciencedaily.com/releases/2013/09/130912143622.htm
American Chemical Society. "Sewage treatment removes widely used home and garden insecticides from wastewater." ScienceDaily. www.sciencedaily.com/releases/2013/09/130912143622.htm (accessed October 24, 2014).

Share This



More Earth & Climate News

Friday, October 24, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Dances With Wolves in China's Wild West

Dances With Wolves in China's Wild West

AFP (Oct. 23, 2014) One man is on a mission to boost the population of wolves in China's violence-wracked far west. The animal - symbol of the Uighur minority there - is under threat with a massive human resettlement program in the region. Duration: 00:41 Video provided by AFP
Powered by NewsLook.com
San Diego Zoo's White Rhinos Provide Hope for the Critically Endangered Species

San Diego Zoo's White Rhinos Provide Hope for the Critically Endangered Species

Reuters - Light News Video Online (Oct. 22, 2014) The pair of rare white northern rhinos bring hope for their species as only six remain in the world. Elly Park reports. Video provided by Reuters
Powered by NewsLook.com
Trick-or-Treating Banned Because of Polar Bears

Trick-or-Treating Banned Because of Polar Bears

Buzz60 (Oct. 21, 2014) Mother Nature is pulling a trick on the kids of Arviat, Canada. As Mara Montalbano (@maramontalbano) tells us, the effects of global warming caused the town to ban trick-or-treating this Halloween. Video provided by Buzz60
Powered by NewsLook.com
Traditional Farming Methods Gaining Ground in Mali

Traditional Farming Methods Gaining Ground in Mali

AFP (Oct. 20, 2014) He is leading a one man agricultural revolution in Mali - Oumar Diatabe uses traditional farming methods to get the most out of his land and is teaching others across the country how to do the same. Duration: 01:44 Video provided by AFP
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Plants & Animals

Earth & Climate

Fossils & Ruins

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins