Featured Research

from universities, journals, and other organizations

Filtering kitchen wastewater for plants

Date:
January 6, 2011
Source:
Inderscience Publishers
Summary:
Water is a precious commodity, so finding ways to re-use waste water, especially in arid regions is essential to sustainability. Researchers in India have now carried out a study of various waste-water filtration systems for kitchen wastewater and found that even the most poorly performing can produce water clean enough for horticultural or agricultural use.

Water is a precious commodity, so finding ways to re-use waste water, especially in arid regions is essential to sustainability. Researchers in India have now carried out a study of various waste water filtration systems for kitchen waste water and found that even the most poorly performing can produce water clean enough for horticultural or agricultural use.

They report details in the International Journal of Environmental Technology and Management.

Recycling domestic wastewater is becoming an important part of water management and emerging technology and a shift in attitude to waste in the developing world means that more people would be willing to re-use this so-called gray water given the choice. Unfortunately, affordable and effective domestic wastewater treatment is not yet available particularly in parts of the world where financial and technical constraints are acute. Nevertheless domestic wastewater from showers, kitchen sinks and laundry washing in homes and offices offers a potential resource that differs from industrial wastewater. Domestic waste water might contain an organic load from food processing, utensil washing in the kitchen, soap and detergents, with the main contaminants being proteins, carbohydrates, detergents, oil and grease and other dissolved and suspended compounds.

Subrata Dasgupta of the Council of Scientific and Industrial Research, in Kolkata, and colleagues have explored the potential of ceramic microfiltration membrane s used alone or in conjunction with different physicochemical treatments, such as biotreatment and adsorption, for cleaning up dirty dishwater. The team compared cross-flow microfiltration (CMF) with tubular ceramic membranes in single channel and multichannel configurations. Biotreatment involved using activated sludge or an adsorptive treatment based on the prepared dried roots of Eichhornia crassipes, an aquatic weed that grows well in polluted water.

The researchers found that, as one might expect, a 19-channel ceramic membrane performed better in terms of permeate quality than a single-channel filter. In terms of BOD (biological oxygen demand), COD (chemical oxygen demand), turbidity, TSS (total suspended solids), microfiltration of the waste water treated with adsorbent appeared to be most promising compared with other the approaches tested. In that approach, 98% removal of BOD and 99% removal of COD were seen. The quality of the treated water was found to be fit for use in horticulture and irrigation, the team concludes.


Story Source:

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


Journal Reference:

  1. Subrata Dasgupta et al. Comparative study on treatment of kitchen-sink wastewater using single and multichannel ceramic membrane. Int. J. Environmental Technology and Management, 2010; 13: 336-347

Cite This Page:

Inderscience Publishers. "Filtering kitchen wastewater for plants." ScienceDaily. ScienceDaily, 6 January 2011. <www.sciencedaily.com/releases/2011/01/110105094119.htm>.
Inderscience Publishers. (2011, January 6). Filtering kitchen wastewater for plants. ScienceDaily. Retrieved September 16, 2014 from www.sciencedaily.com/releases/2011/01/110105094119.htm
Inderscience Publishers. "Filtering kitchen wastewater for plants." ScienceDaily. www.sciencedaily.com/releases/2011/01/110105094119.htm (accessed September 16, 2014).

Share This



More Earth & Climate News

Tuesday, September 16, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Raw: Scientists Examine Colossal Squid

Raw: Scientists Examine Colossal Squid

AP (Sep. 16, 2014) Squid experts in New Zealand thawed and examined an unusual catch on Tuesday: a colossal squid. It was captured in Antarctica's remote Ross Sea in December last year and has been frozen for eight months. (Sept. 16) Video provided by AP
Powered by NewsLook.com
Man Floats for 31 Hours in Gulf Waters

Man Floats for 31 Hours in Gulf Waters

AP (Sep. 16, 2014) A Texas man is lucky to be alive after he and three others floated for more than a day in the Gulf of Mexico when their boat sank during a fishing trip. (Sept. 16) Video provided by AP
Powered by NewsLook.com
Researchers Explore Shipwrecks Off Calif. Coast

Researchers Explore Shipwrecks Off Calif. Coast

AP (Sep. 16, 2014) Federal researchers are exploring more than a dozen underwater sites where they believe ships sank in the treacherous waters west of San Francisco in the decades following the Gold Rush. (Sept. 16) Video provided by AP
Powered by NewsLook.com
Isolated N. Korea Asks For International Help With Volcano

Isolated N. Korea Asks For International Help With Volcano

Newsy (Sep. 16, 2014) Mount Paektu volcano in North Korea is showing signs of life and there's not much known about it. Video provided by Newsy
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:
from the past week

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