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AASeminar Presentation OnSeminar Presentation On
Presented By Presented By
Mr. AMIT H. SHIDURKAR3rd Year degree in Civil Engg.
Prof. Shahade sirLect. Civil Engg. Dept..
GUIDED By GUIDED By
Jagadambha college of engg. & Tech., ytl
IntroductionIntroduction Object of purificationObject of purification Methods of purification Methods of purification Screening Screening AerationAeration Sedimentation Sedimentation DisinfectionDisinfection ConclusionConclusion
INTRODUCTIONINTRODUCTION The treatment given to the water before supplying to the The treatment given to the water before supplying to the
consumers is called as water treatment….consumers is called as water treatment…. Water contains no. of impurities which to be removedWater contains no. of impurities which to be removed Various purification units constructed by municipality, Various purification units constructed by municipality,
corporationscorporations
OBJECTIVES OF PURIFICATIONOBJECTIVES OF PURIFICATION
To remove the hardness of water To remove the hardness of water
To remove the turbidity To remove the turbidity
To remove the gasesTo remove the gases
To remove the objectionable tasteTo remove the objectionable taste
SCREENINGSCREENING
AERATIONAERATION
SEDIMENTATIONSEDIMENTATION
DISINFECTIONDISINFECTION
METHODS OF PURIFICATIONMETHODS OF PURIFICATION
It is the process of removing large size particles.It is the process of removing large size particles.To remove the floating particleTo remove the floating particleTo remove suspended particleTo remove suspended particle
SCREENINGSCREENING
Coarse screen or Bar screen Coarse screen or Bar screen :: This screen trap the coarser floating material, This screen trap the coarser floating material, They are in bar grill, having diameter 25mmThey are in bar grill, having diameter 25mm
Fine screenFine screen:: The size of these screen are small as compare to The size of these screen are small as compare to
coarse screen, these screen retains the particle smaller as coarse screen, these screen retains the particle smaller as compare to coarse screen.compare to coarse screen.
TYPES OF SCREEN
AERATIONAERATION
It is a process of bringing the water in intimate contact with airIt is a process of bringing the water in intimate contact with air
To remove the carbon dioxideTo remove the carbon dioxide
To remove the undesirable gases To remove the undesirable gases
METHODS OF AERATIONMETHODS OF AERATION
Cascade aerationCascade aeration Air diffusion methodAir diffusion method
Aeration fountain Aeration fountain
SEDIMENTATIONSEDIMENTATION
It is the process of removing or reducing the turbidity of It is the process of removing or reducing the turbidity of water by the removal of suspended impurities, so that water by the removal of suspended impurities, so that suspended particles may settle down at the bottom due the suspended particles may settle down at the bottom due the force gravity.force gravity. It removes the suspended as well as colloidal particle It removes the suspended as well as colloidal particle
TYPES OF TYPES OF SEDIMENTATIONSEDIMENTATION
Plain sedimentation:Plain sedimentation:The principle of this method is force of gravity.The principle of this method is force of gravity.In this sedimentation, a large particles can be In this sedimentation, a large particles can be removed.removed.
Sedimentation with coagulation:Sedimentation with coagulation:In this process ,some coagulant such as aluminum In this process ,some coagulant such as aluminum sulphate, ferrous sulphate are sulphate, ferrous sulphate are added in the impured water to form floc and to added in the impured water to form floc and to attract the suspended impuritiesattract the suspended impurities
COMMONLY USE COMMONLY USE COAGULANTSCOAGULANTS
Aluminum sulphate(alum)Aluminum sulphate(alum)
Ferrous sulphate Ferrous sulphate
Chlorinated copperousChlorinated copperous
Sodium aluminateSodium aluminate
DISINFECTIONDISINFECTION In this process, harmful bacteria are destroyed to In this process, harmful bacteria are destroyed to
make the water acceptable for domestic as well make the water acceptable for domestic as well as industrial uses.as industrial uses.
The particle which are not remove by earlier The particle which are not remove by earlier process, this particle to be removed by process, this particle to be removed by disinfection.disinfection.
There are various methods adopted for There are various methods adopted for disinfection.disinfection.
METHODS OF METHODS OF DISINFECTIONDISINFECTION
By boiling of waterBy boiling of water
By ultraviolet raysBy ultraviolet rays
By chlorination By chlorination