International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395 -0056
Volume: 04 Issue: 03 | Mar -2017
p-ISSN: 2395-0072
www.irjet.net
Modified Drawer Compacted Sand Filter Prof. Neethu John1, Abhijith G2, Ciji B3,Haripriya M4, Jivic J Panackal5, Sijitha Sidhan6 1Assistant
Professor, Civil Engineering Dept. Ahalia School of Engineering And Technology, Palakkad, Kerala, India Student, Civil Engineering Dept. Ahalia School of Engineering And Technology, Palakkad, Kerala, India ---------------------------------------------------------------------***--------------------------------------------------------------------2,3,4,5,6UG
Abstract - The Modified Drawer Compacted Sand Filter
(MDCSF) is a modified design for a drawer compacted sand filter in which the sand layer, is broken down into several layers , each of which is 10 cm high and placed in a movable drawer separated by a 10 cm space. A lab-scale DCSF was designed and operated for 60 days fed by synthetic grey water. The response of drawer compacted sand filters and modified drawer compacted sand filter in terms of COD, BOD5, Hardness, turbidity and TDS reductions were evaluated. Each loading regime was applied for 30 days. Results showed that DCSF was able to remove > 91% of organic matter and Total Suspended Solids for all doses. Significant reduction in BOD5 (100%) and COD (95%) was noticed after water drained through the modified drawer compacted sand filter. This paper concludes that MDCSF would be appropriate for use in dense urban areas as its footprint is small and is appropriate for a wide range of users because of its convenience and low maintenance requirements. Key Words: Drawer compacted sand filter, grey water filter, synthetic grey water , Modified drawer compacted sand filter
on water security organized by the World Water Organization warned that two-third of the world’s population will face water shortage by 2050.
2. MATERIALS 2.1Sand In DCSF, sand was used as a major filtering medium. Sand could remove large extend of impurities from water. Each draws of DCSF was filled with different grades of sand. The purity of water increases with fineness of sand.
1.INTRODUCTION Water covers 70 percent of the globe’s surface, but most is saltwater. Freshwater covers only 3 percent of the earth’s surface and much of it lies frozen in the Antarctic and Greenland polar ice. Freshwater that is available for human consumption comes from rivers, lakes and underground sources and aquifers. Together these sources account for just one percent of all water on earth. The world’s fresh water sources are threatened by climate change. Scientists around the world agree that recent climate changes occurring globally are the result of human activities. Rising global temperatures lead to heightened risk of more extreme and frequent floods and drought. Water scarcity currently affects many region in the world. In water rich countries, urbanization and industrialization have frequently led to contaminated and deteriorated surface water and ground water such that these countries are unable to meet the ever increase water demand. The UN’s climate change panel stated that the world’s current population of about 6.6 billion is forecast to rise by 2.5 billion by 2050. As human population increases, the need for water also increases in domestic, agricultural, industrial and urban sectors. Consequently, water or ‘blue gold’ is widely predicted to be a critical resource. In 2009, the symposium © 2017, IRJET
|
Impact Factor value: 5.181
|
Fig 2.1: sand 2.2 Silver Coated Sand Silver coated sand was obtained by treating sand with silver nitrate. It can remove micro-organisms from the impure water. The silver content present in purified water will resist the growth of unhealthy organisms. Hence it can be stored till further use. Preparation: 1.
500gm of graded, washed and dried sand was mixed with 1gm silver nitrate and dissolved in 1lit of distilled water
2.
Above ingredients are mixed thoroughly and allowed a maturing time of 1hr.
3.
This mixture was then treated with 2gm of NaOH and dissolved in 50ml distilled water and mixed thoroughly
ISO 9001:2008 Certified Journal
|
Page 652