Navigation Links
Filtering kitchen wastewater for plants
Date:1/5/2011

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.


'/>"/>

Contact: Subrata Dasgupta
sdasgupta@cgcri.res.in
Inderscience Publishers
Source:Eurekalert

Related biology news :

1. Blue light-filtering increases macular pigment, may protect against age-related vision loss
2. New filtering technology has environmental, industrial applications
3. New study: The kitchen-counter diet
4. Wastewater treatment lowers pathogen levels
5. UC research: Rabbits food brings luck in decreasing estrogen levels in wastewater
6. Stanford engineers use rocket science to make wastewater treatment sustainable
7. Household detergents, shampoos may form harmful substance in wastewater
8. ACS webinar features developments in online water and wastewater monitoring
9. Wastewater produces electricity and desalinates water
10. New method monitors critical bacteria in wastewater treatment
11. Commercial aquatic plants offer cost-effective method for treating wastewater
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:1/11/2017)... , Jan. 11, 2017  Michael Johnson, co-founder of Visikol Inc. ... Group, Inc., has been named to the elite "Forbes 30 Under ... one of 600 people in 20 fields nationwide to be recognized ... the 15,000 applicants were selected. ... He is currently a PhD candidate at Rutgers University. ...
(Date:1/6/2017)... 2017  Delta ID Inc., a leader in consumer-grade ... automotive at CES® 2017. Delta ID has collaborated with ... the use of iris scanning as a secure, reliable ... in a car, and as a way to elevate ... Delta ID and Gentex will demonstrate (booth #7326 ...
(Date:1/3/2017)... 2017 Onitor, provider of digital health technology ... an innovative biometric data-driven program designed to aid weight ... the 2017 Consumer Electronics Show (CES) in ... U.S., the World Health Organization (WHO), have identified lifestyle ... who are overweight or obese. WHO also states that ...
Breaking Biology News(10 mins):
(Date:1/19/2017)... 2017 The global biotechnology services outsourcing ... by 2025, according to a new report by ... adaptive of the function of outsourcing certain clinical ... the services outsourced, clinical trial management and contract ... Johnson was the first pharmaceutical company to outsource ...
(Date:1/18/2017)... India , January 18, 2017 According to a ... (Cancer Diagnosis, Neuroscience, Cytology, Infectious Disease), & End User (Molecular Diagnostic Laboratories, Academic ... is expected to reach USD 739.9 Million by 2021 from USD 557.1 Million ... Continue Reading ... MarketsandMarkets Logo ...
(Date:1/18/2017)... ... January 18, 2017 , ... ... Leven successfully implanted SpineFrontier’s A-CIFT™ Solofuse-P™. The operation took place on Wednesday, January ... NY. The procedure was an anterior cervical discectomy and fusion on a 42 ...
(Date:1/18/2017)... ... January 18, 2017 , ... DrugDev customers are ... Ops Executives (Hyatt Regency Miami, January 24-26). DrugDev will join customers including Pfizer, ... such as trial performance metrics, patient enrollment diversity, protocol optimization, and global site ...
Breaking Biology Technology: