pickabook books with huge discounts for everyone
pickabook books with huge discounts for everyone
Visit our new collection website www.collectionsforschool.co.uk
     
Email: Subscribe to news & offers:
Need assistance? Log In/Register


Item Details
Title: DEVELOPMENT OF DESIGN CRITERIA FOR DENITRIFYING TREATMENT WETLANDS
By: Iconmen.com
Format: Electronic book text

List price: £33.60


We believe that this item is permanently unavailable, and so we cannot source it.

ISBN 10: 1843395339
ISBN 13: 9781843395331
Publisher: IWA PUBLISHING
Pub. date: 15 December, 2011
Series: WERF Research Report Series
Pages: 16
Synopsis: Available as an eBook only.Subsurface wetlands are well suited for on-site applications because they provide odor and vector control and they mitigate public access issues (U.S. EPA, 1993). Artificial subsurface wetlands are typically designed with an inert rock medium, can be either planted or unplanted, and are designed so that the water flows below the surface of the wetlands through the porous medium. The medium provides a surface area for the growth of bacterial films but inhibits the carbon cycling from plant debris because the packing material prevents the plant debris from reaching the water. As a result, subsurface wetlands are only marginally successful at removing nitrogen from wastewater. The nitrogen removal that does occur is the result of plant assimilation and microbial denitrification that utilizes any remaining carbon source in the influent and from plant decay (Kadlec and Knight, 1996). To increase the denitrification performance, an alternative carbon source is required. Gersberg et al. (1983) demonstrated that the addition of carbon, in the form of methanol, stimulated bacterial denitrification and increased nitrate removal efficiencies to 95%. Based on previous research, it has been found that a variety of organic solids can be used simultaneously as media and as a carbon source to support the denitrification process. These include plant biomass (Gersberg et al., 1983), cotton burr and mulch compost (Su and Puls, 2007), wheat straw (Aslan and Turkman, 2003), sawdust (Robertson and Cherry, 1995; Schipper et al., 1998), and woodchips (Healy et al., 2005; Robertson et al., 2009). Schipper et al. (1998) demonstrated that porous groundwater treatment walls amended with sawdust were successful in removing nitrate from contaminated groundwater. Robertson et al. (2005) demonstrated that the proprietary Nitrex filters, which utilize a nitrate reactive material, produced septic tank effluent nitrate removal rates of up to 96%, remaining effective for at least five years, but removal rates were diminished during the winter months. The temperature of the water in a wetland system can significantly affect the rate of denitrification (Kadlec and Knight, 1996). The use of a readily available organic medium in a constructed subsurface wetland as a method for denitrification of nitrified septic tank effluent has not been investigated.
Publication: UK
Imprint: IWA Publishing
Returns: Non-returnable
Some other items by this author:

TOP SELLERS IN THIS CATEGORY
A Farewell to Ice (Paperback)
Penguin Books Ltd
Our Price : £9.48
more details
Green Chemistry (Hardback)
Royal Society of Chemistry
Our Price : £32.39
more details
Foundations of Analytical Chemistry (Mixed media product)
Springer International Publishing AG
Our Price : £41.99
more details
Engineering Methods for Precipitation under a Changing Climate (Paperback / softback)
By:
American Society of Civil Engineers
Our Price : £114.46
more details
Atmospheric Monitoring with Arduino (Paperback)
O'Reilly Media, Inc, USA
Our Price : £3.64
more details
BROWSE FOR BOOKS IN RELATED CATEGORIES
 TECHNOLOGY, ENGINEERING, AGRICULTURE, VETERINARY SCIENCE
 environmental engineering & technology
 environmental monitoring


Information provided by www.pickabook.co.uk
SHOPPING BASKET
  
Your basket is empty
  Total Items: 0
 






Early Learning
Little Worried Caterpillar (PB) Little Green knows she''s about to make a big change - transformingfrom a caterpillar into a beautiful butterfly. Everyone is VERYexcited! But Little Green is VERY worried. What if being a butterflyisn''t as brilliant as everyone says?Join Little Green as she finds her own path ... with just a littlehelp from her friends.
add to basket

Early Learning
add to basket

Picture Book
All the Things We Carry PB What can you carry?A pebble? A teddy? A bright red balloon? A painting you''ve made?A hope or a dream?This gorgeous, reassuring picture book celebrates all the preciousthings we can carry, from toys and treasures to love and hope. With comforting rhymes and fabulous illustrations, this is a warmhug of a picture book.
add to basket