Navigation Links
Commercial aquatic plants offer cost-effective method for treating wastewater
Date:9/29/2008

CLEMSON, SC Nursery and greenhouse operations depend on the use of fertilizers, growth regulators, insecticides, and fungicides. Growers also rely on the use of soilless media, or substrate, in the production of container crops. Concerns arise when excessive irrigation of the container crops grown in soilless media leads to leaching and loss of nutrients and chemicals in runoff. The resulting runoff can escape from production areas and have a negative impact on surface and ground water.

The presence of nutrients in runoff and concerns of their impact on surface and groundwater quality has undergone increasing interest and scrutiny from the public, environmental groups, governmental agencies, and elected officials. Since its enactment, the U.S. Environmental Protection Agency (EPA) has enforced provisions of the Clean Water Act related to point-source pollution. In 1999, the EPA began enforcing nonpoint source pollution controls, mandating that all states implement a Total Maximum Daily Load (TMDL) program for all watersheds and bodies of water.

Constructed wetlands (CWs) have been promoted as inexpensive, low-technology approaches to treating agricultural, industrial, and municipal wastewater to comply with increasingly stringent environmental regulations. CWs, or marshes built to treat contaminated water, incorporate soil and drainage materials, water, plants, and microorganisms. "Surface-flow" constructed wetlands resemble shallow freshwater marshes and generally require a large land area for wastewater treatment. More effective for greenhouse and nursery operations with limited production space and expensive land are a type of constructed wetland called "subsurface flow". Subsurface flow wetlands consist of a lined or impermeable basin filled with a coarse medium, typically gravel, and wetland plants. Wastewater flows horizontally or vertically below the surface of the media to prevent exposure to humans or wildlife.

Robert Poloms
'/>"/>

Contact: Michael W. Neff
mwneff@ashs.org
703-836-4606
American Society for Horticultural Science
Source:Eurekalert

Page: 1 2

Related biology news :

1. MSU technology that converts plant fibers to biofuel commercialized
2. OHSU commercial collaborations have surged
3. Commercialization aim of grant supporting technology that destroys cancer cells
4. Food scientists confirm commercial product effectively kills bacteria in vegetable washwater
5. NOAA proposes rule to prevent commercial harvesting of krill
6. OCAST funds OSU projects with commercial viability
7. IEEE Homeland Security Conference Business Panel to feature experts on technology commercialization
8. UTMB inventions win University of Texas System commercialization awards
9. Computers explain why pears may become brown during commercial storage
10. OHSU turns innovations into commercial opportunities at record pace
11. A common aquatic animals genome can capture foreign DNA
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:9/15/2014)... West Africa, which has claimed more than 2000 lives, ... the molecular biology of the virus that could be ... to treat or prevent Ebola hemorrhagic fever. Now, a ... under the leadership of Dr Dan Engel, a virologist, ... obtained the crystal structure of a key protein involved ...
(Date:9/15/2014)... long and weighing as much as 170 tons, the blue ... far the heaviest living thing ever seen on Earth. So ... the tiniest fish larvae, which measure millimeters in length and ... , Not so fast, says L. Mahadevan, the Lola ... Evolutionary Biology, and of Physics. , Using simple hydrodynamics, ...
(Date:9/15/2014)... teeming with life it,s not what comes to mind ... time evidence of Doncaster,s 310-million-year-old past, including a fossilised shark ... , Some of the fossilised plants and creatures may even ... case, several horseshoe crabs and some previously unrecorded seed pods ... rocks that formed within the coal and shale deposits in ...
Breaking Biology News(10 mins):Protein secrets of Ebola virus 2The science behind swimming 2The science behind swimming 3'Jaws' lived in Doncaster 2
... change is already having a detectable impact on birds ... team publishing their findings to create the world,s first ... a continental scale. Published in the journal ... Royal Society for the Protection of Birds have shown ...
... climate change projected this century for Oregon,s Upper ... supplies, buildings, transportation systems, human health, forests, and ... by the University of Oregon,s Climate Leadership Initiative ... Policy. The authors say that extensive efforts ...
... DNA in the nucleus of each of our cells is converted ... serve as coding templates for the synthesis of proteins. Of the ... scant few are known: they inhibit the activity of genes or ... within cells. What the rest of them do within cells is ...
Cached Biology News:Climate change affecting Europe's birds now, say researchers 2Climate change affecting Europe's birds now, say researchers 3Eugene-Springfield face Upper Willamette climate threats 2Eugene-Springfield face Upper Willamette climate threats 3Eugene-Springfield face Upper Willamette climate threats 4CSHL researchers pinpoint structure-building role for 2 non-coding RNAs 2CSHL researchers pinpoint structure-building role for 2 non-coding RNAs 3
(Date:9/16/2014)... RENU 28, the world's first and only skin ... purchase in Australia and New Zealand in mid-August . , ... The tour will make stops in Brisbane on September 16, ... Sydney on the 20th, and Melbourne on the 22nd. , ... and to educate people about the new product and business ...
(Date:9/15/2014)... Sept. 15, 2014   Global Science & ... scientific products and services for satellite and weather ... for Integrated Services (OASIS) from the General Services ... selected to provide the government best-value solutions for ... (SB) category in Pool 4. The OASIS SB ...
(Date:9/15/2014)... Sept. 15, 2014 EnGeneIC, Ltd. ... the treatment of cancer through the targeted delivery ... that, together with the Asbestos Disease Research Institute ... New South Wales (NSW) Premier,s Award for Excellence ... are the hospitals that will be involved in ...
(Date:9/15/2014)... have developed a technique for controlling the surface tension ... the door to a new generation of reconfigurable electronic ... the fact that the oxide "skin" of the metal ... as a surfactant, lowering the surface tension between the ... a liquid metal alloy of gallium and indium. In ...
Breaking Biology Technology:Global Wellness Company Hosts ASEA Australia Tour September 16-22 2Global Science & Technology, Inc. Awarded GSA OASIS Small Business Contract 2Global Science & Technology, Inc. Awarded GSA OASIS Small Business Contract 3EnGeneIC Named a Recipient of the Cancer Institute NSW Premier's Award for Excellence in Translational Cancer Research 2EnGeneIC Named a Recipient of the Cancer Institute NSW Premier's Award for Excellence in Translational Cancer Research 3Researchers control surface tension to manipulate liquid metals 2
... Sinovac Biotech Ltd. (Amex:,SVA), a leading provider ... today that the Annual General Meeting of ... postponed due the geographical,nature of its shareholders ... materials. The Company is currently working to ...
... LLC announced,today that two new managing directors have ... firm in July 2007 as Managing Director and,Associate ... portfolios of potential investments for Third,Security,s funds, and ... and develop their own intellectual property positions. Mr. ...
... Aug. 20 Advanced Cell,Technology, Inc. (OTC Bulletin ... conditions, it plans to privately offer up to ... timing of the,closing of the offering will be ... are expected to be used to fund working ...
Cached Biology Technology:Sinovac Announces Postponement of Annual General Meeting 2Third Security, LLC Hires Two New Managing Directors 2Advanced Cell Technology Announces Proposed Financing 2Advanced Cell Technology Announces Proposed Financing 3