This paper describes the design and construction of the pedal operated water pump are done especially discharge rate at different speed and height. The proposed pump is a rotary pump operated by pedal power. In the rotary pump, water enters axially t
briquettes of about 220mm length at a time using agricultural and wood wastes . The small light weight fuel briquette machine was successfully constructed using locally available materials a…Descripción completa
process of fabricationFull description
water purification system powered by the sunFull description
Project ReportFull description
Due to industrial development, use of natural fuel is increasing continuously that's why there is need of alternating source of senergy. Eg Human energy. To reduce use of natural fuel we can use bicycle technology to run a machine using human power.
Pedal Operated Hack Saw MachineFull description
Shows the technique by which pure water can be obtained by using plain sand. The method has been in use for thousands of years and is proven to be the best in terms of economy and effectiveness.
Pedal Operated Washing Machine
Full description
Water is the most abundant chemical and important natural resource. Various concentrations of water at given place contributes to water quality. The suitability of water and its specific use are evaluated by examining its quality parameters. The adve
Protocol for purification and assay of lactose dehydrogenaseFull description
PEDAL POWERED REVERSE OSMOSIS WATER WATER PURIFICATION PURIF ICATION
SYNOPSIS
Although Reverse Osmosis seems like a complex system it is really a simple and straightforward water filtration process. And it's not a new process. High-pressure (pump driven rever reverse se osmo osmosis sis syst systems ems have have !een !een used used for for year yearss to desalinate desalinate" " water # to convert !rackish or seawater to drinking water. Having a !etter understanding of how a reverse osmosis system works will eliminate the mystery and confusion you may feel when you look at a reverse osmosis system -- with its many colored tu!es and multitude of filters. Read on to enhance your knowledge of residential systems. systems.
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All RO $ystems work $ystems work the same way.
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%ost RO (Reverse Osmosis systems look alike.
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All RO $ystems have the same !asic components.
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&he real difference is the uality of the filters and mem!ranes inside the RO
INTRODUCTION
Osmosis is a natural process !y which water flows into plant and animal cells through through cellular cellular mem!ranes mem!ranes also known as semi-perm semi-permea!l ea!lee mem!rane mem!raness or osmotic osmotic mem!ranes. &hese mem!ranes have a uniue property that pure water can freely flow in either direction !ut passage of salt and other dissolved impurities are inhi!ited. )iving cells cells contai contain n salty salty soluti solutions ons which which allows allows them them to a!sor! a!sor! water water from from their their natura naturall surroundings through the osmotic process.
Osmotic pressure is a uniue natural property of all solutions. &he osmotic pressure of a solution depends on the concentration of the salt and other dissolved
materials. $uspended impurities like silt and !acteria do not contri!ute to osmotic pressure.
WORKING PRINCIPAL
Reverse Osmosis is a process in which dissolved inorganic solids (such as salts are removed from a solution (such as water. &his is accomplished !y household water pressure pushing the tap water through a semi permea!le mem!rane. &he mem!rane (which is a!out as thick as cellophane allows only the water to pass through not the impurities or contaminates. &hese impurities and contaminates are flushed down the drain. *ltimately the factors that affect the performance of a Reverse Osmosis $ystem are+ •
,ncoming water pressure
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ater &emperature
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&ype and num!er of total dissolved solids (&$ in the tap water
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&he uality of the filters and mem!ranes used in the RO $ystem (see operating specs ADVANTAGES
&ap water contains multiple !iological contaminants
&he RO treated water is not only pure !ut also great in taste and smell. &his is !ecause the RO system removes a!out /01 of chemicals from the tap water. $o you do not have to !ear with the taste and smell of chlorine anymore.
ith the removal of lead mercury chlorine as!estos and other 2344 well known toxins RO system significantly reduces the risk of illness and diseases.
&he water that you get from RO system hydrates your !ody at a faster pace.
&he !est part a!out RO system is that all the pollutants are not collected !ut directly flushed down the drain.
&he RO system is !est for areas having hard water.
DISADVANTAGES
As most minerals like iron magnesium calcium and sodium are larger in si5e than water molecules the semi-permea!le prevents them from passing on to the other side. $o the water actually gets de-minerali5ed. &he removal of naturally occurring minerals not only makes the water less healthy !ut also affects its taste. &hus many people find the RO water tasteless.
&he RO mem!rane fails to remove any dissolved salts ions or particles that are smaller in si5e as compared to water molecules.
,t is expensive to use an RO water purifier as it runs on electricity.
&he system needs professional assistance for cleaning.
