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Greywater Treatment by Drawer Compacted Sand Filter with Silver Coated Sand


Author(s):

Bessy John , Government Engineering College, Thrissur; Bindu G, Government Engineering College, Thrissur

Keywords:

Drawer compacted sand filter, Silver coated sand

Abstract:

Wastewater which comes out from showers, bathtubs, hand basins, laundry, washing machines, dishwashers and kitchen sinks is known as Greywater. Greywater can be reused for toilet flushing, irrigation and recreational purpose etc. There are different methods for treating grey water, among them sand filtration is a simple and effective process. The goal of this paper is to suggest a new approach for sand filter design. Drawer Compacted Sand Filter (DCSF) is a modified design for sand filter, in which sand layer is broken down into different layers and placed in a movable drawers separated by 5 cm space. Through drawer compacted sand filter BOD (89.21%), COD(89.49%), Turbidity(93.51%) etc can be effectively reduced. Transmission of waterborne pathogens is a main problem with greywater reuse. Effective pathogen removal can be achieved by this filter. Greywater reuse for irrigation has low possibility of human contact. So disinfection may not be required. But in the case of toilet flushing and recreational purpose, disinfection is must for improved pathogen removal. Silver is a strong antimicrobial agent and we can also use silver coated sand for the treatment for improved disinfection. By using silver coated sand in DCSF, e-coli removal efficiency increased from 94.19% to 99.99 %.


Other Details:

Manuscript Id :IJSTEV3I10137
Published in :Volume : 3, Issue : 10
Publication Date: 01/05/2017
Page(s): 496-500
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