Development of Low-cost indigenous filtration system for urban sullage: assessment of reusability
Tóm tắt
Treated sullage water could be the answer to urban water scarcity. In this study, urban sullage water was subjected to various tests to determine a number of physiochemical parameters, heavy metal content and coliform count. Obtained results were compared with the Dhaka Water and Sewerage Authority (DWASA) water samples. The sullage water was then treated using a proposed filtration system with indigenous gravel-coal-sand filter. The pH, chlorine (Cl−) and phosphate (PO4 3−) of the sullage water, DWASA water and treated sullage water were found to be within the allowed limit set by Bangladesh Drinking Water Quality Standard. The nitrate (NO3 1−), BOD, DO, coliform and phosphate (PO4 3−) of the sullage water exceeded both the Bangladesh and WHO standard. The amount of toxic heavy metals, lead, cadmium, chromium, mercury and arsenic, were determined to be below the standards. The results indicated that sullage water is not safe and the treated one is safe from toxic heavy metals for household use. The significant portion of treated water can be reutilized which is equivalent of 29 % savings from the annual DWASA water bill. The quality of the treated sullage water revealed that it can be reused for cleaning, washing, bathing in household activities along with other agricultural and industrial purposes.
Tài liệu tham khảo
citation_journal_title=Adv. Agron.; citation_title=The emerging global water crisis: managing scarcity and conflict between water users; citation_author=WA Jury, HJ Vaux; citation_volume=95; citation_publication_date=2007; citation_pages=1-76; citation_doi=10.1016/S0065-2113(07)95001-4; citation_id=CR1
citation_title=The Global Water Crisis: Addressing an Urgent Security Issue; citation_inbook_title=Papers for the Inter Action Council,2011-2012; citation_publication_date=2012; citation_id=CR2; citation_author=GH Brundtland; citation_publisher=UNU-INWEH
citation_title=Water Conflict Chronology, Version 2004-2009” in The World’s Water. The Biennial Report on Freshwater Resources, 2008–2009; citation_publication_date=2009; citation_id=CR3; citation_author=PH Gleick; citation_publisher=Island Press
citation_title=Balancing Water for People and Nature; citation_inbook_title=Water for Food in a Changing World: Contributions from the Rosenberg International Forum on Water Policy; citation_publication_date=2011; citation_pages=135-170; citation_id=CR4; citation_author=U Safriel; citation_publisher=Routledge
Prud’homme A (2011), The Ripple Effect. The Fate of Freshwater in the 21st Century. New York: Scribner.
citation_journal_title=Science; citation_title=Stationarity IsDead: whither water management; citation_author=PCD Milly, J Betancourt, M Falkenmark, RM Hirsch, ZW Kundzewicz, DP Lettenmaier, RJ Stouffer; citation_volume=319; citation_publication_date=2008; citation_pages=573-574; citation_doi=10.1126/science.1151915; citation_id=CR6
citation_title=The Big Thirst. The Secret Life and Turbulent Future of Water; citation_publication_date=2011; citation_id=CR7; citation_author=C Fishman; citation_publisher=Free Press
citation_title=Statistical Yearbook of Bangladesh −2012; citation_publication_date=2013; citation_id=CR8; citation_publisher=Ministry of Planning Government of The People’s Republic of Bangladesh
citation_journal_title=Water Policy; citation_title=Water for agriculture and the environment: the ultimate trade-off; citation_author=HJ Vaux; citation_volume=14; citation_publication_date=2012; citation_pages=136-146; citation_doi=10.2166/wp.2012.209; citation_id=CR9
citation_journal_title=Clean: Soil Air Water; citation_title=River water pollution in developed and developing countries: judge and assessment of physicochemical characteristics and selected dissolved metal concentration; citation_author=MT Sikder, Y Kihara, M Yasuda, MY Yustiawati, S Tanaka, D Odgerel, B Mijiddorj, SM Syawal, T Hosokawa, T Saito, M Kurasaki; citation_volume=41; citation_publication_date=2013; citation_pages=60-68; citation_id=CR10
citation_journal_title=Int J Environ Protec.; citation_title=Comparative assessment of water quality in the major rivers of Dhaka and west java; citation_author=MT Sikder, M Yasuda, S Yustiawati, M Syawal, T Saito, S Tanaka, M Kurasaki; citation_volume=2; citation_publication_date=2012; citation_pages=8-13; citation_id=CR11
citation_title=A report on the Development of Pond-Sand Filter; citation_publication_date=1989; citation_id=CR12
citation_title=Annual Report 2012–13; citation_publication_date=2013; citation_id=CR13; citation_publisher=Think box
citation_journal_title=J. Water Poll. Cont. Fed.; citation_title=Detection and significance of fecal coliform bacteria in stream pollution studies; citation_author=EE Geldreich; citation_volume=37; citation_publication_date=1965; citation_pages=1722; citation_id=CR14
citation_title=Nitrate and nitrite in drinking-water; Background document for development of WHO Guidelines for Drinking-water Quality; citation_publication_date=2011; citation_id=CR15; citation_publisher=World Health Organization
citation_title=Guidelines for drinking water quality-1, recommendations; citation_publication_date=2011; citation_id=CR16; citation_publisher=World Health Organization
citation_journal_title=Int. J. Eng. Res. Appl.; citation_title=Reduction of cod and bod by oxidation: a cetp case study; citation_author=PK Lalwani, MD Devadasan; citation_volume=3; citation_publication_date=2013; citation_pages=108-112; citation_id=CR17
citation_journal_title=Sep. Sci. Technol.; citation_title=Removal of cadmium and chromium ions using modified a, b, and c-cyclodextrin polymers; citation_author=MT Sikder, T Kikuchi, J Suzuki, T Hosokawa, T Saito, M Kurasaki; citation_volume=48; citation_publication_date=2013; citation_pages=587-597; citation_doi=10.1080/01496395.2012.707726; citation_id=CR18
citation_journal_title=CRC Crit Rev Toxicol.; citation_title=Toxicity and carcinogenicity of chromium compounds in humans; citation_author=M Costa, CB Klein; citation_volume=36; citation_publication_date=2006; citation_pages=155-163; citation_doi=10.1080/10408440500534032; citation_id=CR19
Luoma SN, Carter JL (1991), Effects of trace metals on aquatic benthos. In: Newman MC, Mcintosh AW (Eds.), Metal ecotoxicology: Concept and application. Chelsea: Lewis (MI.1)
citation_title=White Paper on Total Dissolved Solids in Food Processing Wastewater Beneficial Agricultural Reuse; citation_publication_date=2014; citation_id=CR21; citation_author=DJ Burgard; citation_publisher=Cascade Earth Sciences
U.S. Environmental Protection Agency, Climate change indicators in the United States,2014. Third edition. EPA 430-R-14-004