The method of treatment to use depends upon the nature of raw water the desired standards of water quality.
Methods of household purification of water.
Most water is purified and disinfected for human consumption drinking water but water purification may also be carried out for a variety of other purposes including medical pharmacological chemical.
The goal is to produce water fit for specific purposes.
Purification of water on a small scale 34.
The methods described comprise.
Methods available for purifying water on an individual or domestic scale are.
Boiling is the simplest of all water purification methods.
The 5 different types of water purification methods.
Some household treatment methods and their effectiveness are summa rized in table 6 1 whereas the following household and community water treatment technologies are described in greater detail.
Household purification of water 1.
They can be applied at hole at the family level.
Boiling chemical disinfection filtration ultraviolet irradiation multi stage reverse osmosis purification these methods can be used singly or in combinationboiling it is an excellent method of purifying water but for being effective.
Straining the three pot method treatment by boiling treatment by chlorination treatment by ceramic filterslifestraw method treatment by slow sand filtration the naiade method uv radiation sodis.
The fact sheets in this section deal with both community and household methods for treating water.
Wastewater originating from households is divided into greywater and black water based on its composition.
The methods presented in this factsheet are used to make water drinkable.
Boiling rolling boil for 10 20 min kills bact spores cysts ova removes temporary hardness taste can be altered no residual protection should be stored in same container where boiled 35.
2014 in some places kitchen greywater is considered as black water oron et al.
It s a good method to use for water contaminated by living micro organisms.
The water must be brought to a rolling boil for 10 20 minutes.
1 what is involved.
Purification of water on large scale the purpose of water treatment is to produce water that is safe wholesome.
Thermal treatment with solar radiation.
Household water treatment systems boiling.
It is effective because it kills 99 9 of all living things and vaporizes most chemicals.
Water can be heated to temperatures of 55 c in transparent bottles exposed to sunlight for several hours especially if the bottle is painted black on one side or is lying on a dark surface that collects and radiates heat this method of treatment utilizes both the uv radiation in sunlight as well as the thermal effects of sunlight to inactivate.
Greywater is wastewater discharged from showers bathtubs washing machines and kitchen sinks while black water is toilet wastewater paulo et al.