Design and Economical Performance of Gray Water Treatment Plant in Rural Region

Authors: Bhausaheb L. Pangarkar, Saroj B. Parjane, M.G. Sane

Abstract:

In India, the quarrel between the budding human populace and the planet-s unchanging supply of freshwater and falling water tables has strained attention the reuse of gray water as an alternative water resource in rural development. This paper present the finest design of laboratory scale gray water treatment plant, which is a combination of natural and physical operations such as primary settling with cascaded water flow, aeration, agitation and filtration, hence called as hybrid treatment process. The economical performance of the plant for treatment of bathrooms, basins and laundries gray water showed in terms of deduction competency of water pollutants such as COD (83%), TDS (70%), TSS (83%), total hardness (50%), oil and grease (97%), anions (46%) and cations (49%). Hence, this technology could be a good alternative to treat gray water in residential rural area.

Keywords: Gray water treatment plant, gray water, naturaltechnology, pollutant.

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1328610

References:

[1] Intizar Hussain, Liqa Raschid, Munir A. Hanjra, Fuard Marikar, Wim Vander Hoek, "Wastewater use in agriculture: Review of impact and methodological issues in valuing impacts", working paper 37, Colombo, Shri Lanka, International water management institute, 2002, pp. 1-3.
[2] Emerson G., "Every drop is precious: Gray water as an alternative water source", Queensland Parliamentary Library, Research bulletin no. 4 / 98, 1998.
[3] V. Little, R.J. Frye, C.P. Gerba, "A survey of the microbial quality of recycled household gray water", J. of American water resources association, vol. 37, no. 5, 2001, pp. 13-20.
[4] Dixon A., Butler D., Fawkes A., Robinson M., "Gray water and gray water disposal system", Urban water-I, 1999, pp. 1-3.
[5] R. Ravindar Rao, R.C. Reddy, K.G. Rama RAo, P.S. Kelkar, "Assessment of slow sand filtration system for rural water supply schemes - A case study", Indian J. Environ Health, vol. 45, no. 1, Jan 2003, pp. 59-64.
[6] F. Brissaud, "Low technology systems for waste water treatment: Perspectives", Water science and technology, vol. 55, no. 7, 2007, pp. 1- 9.
[7] M. A. Lopez-Zavala, "Treatment of lower load gray water by using a controlled soil natural treatment system", Water science and technology, vol.55, no.7, 2007, pp. 39-45.
[8] Erikson E., Auffarth K., Henze M. and Ledin A., "Characteristics of gray water", Urban water - 4, 2002, pp. 85-104.
[9] Garland, J.L., Levin L.H., Yorio, N.C., and Hummerick M.E., "Response of gray water recycling system based on hydroponic plant growth to three classes of surfactants" Water Research -38, 2004, pp. 1952-1962.
[10] APHA, "Standard Methods for Examination of Water and Wastewater", 17th edition, 1989, USA.
[11] M. Chandra Sekhar, "Removal of lead from aqueous effluents by adsorption on coconut shell carbon", J. of Environmental Science and Engineering, vol. 50, no. 2, April 2008, pp. 137-140.