Upload
sahreen-bukhari
View
224
Download
0
Embed Size (px)
Citation preview
8/18/2019 Filtration and Filter Types
1/18
ltrat on
Group=02
04/12/16 Water filtration 1
8/18/2019 Filtration and Filter Types
2/18
FILTRATIONFILTRATION
• Settling does not remove all flos !f"rt#er treatment is re$"ired
• Filtration %rovides t#e additionalo%%ort"nit& for se%aration of small
flos or %artiles• T#is %resentation is an introd"tion to
filtration te#nolog& one%ts
04/12/16 Water filtration 2
8/18/2019 Filtration and Filter Types
3/18
Filtration can be compared to a sieve ormicro-strainer that traps suspended material
between the grains of filter media. Filtration may be defined as the separation of
solid from liquid by passing the suspensionthrough a permeable medium which retainsthe solids and allows the liquid to pass istermed as filtration.
04/12/16 Water filtration '
8/18/2019 Filtration and Filter Types
4/18
04/12/16 Water filtration 4
8/18/2019 Filtration and Filter Types
5/18
04/12/16 Water filtration 5
Filter operation
8/18/2019 Filtration and Filter Types
6/18
04/12/16 Water filtration 6
8/18/2019 Filtration and Filter Types
7/18
Filtration media
It an (e onsidered as t#e #eart of t#e filtration devie or ma#ine)
*rovides ade$"ate %orosit& a%a(le of %assing li$"id t#ro"g#+ ,#ileretaining solids
-edi"m is #arateri.ed (& its filtration %ro%erties of %ermea(ilit& and
retention) It an (e
• Nat"ral+
• S&nt#eti+
• Woven lot#
• *a%er+
• erami+
• ell"losi
• S&nt#eti mem(rane+
04/12/16 Water filtration
8/18/2019 Filtration and Filter Types
8/18
Medium performancecriteria:
1) T#e meas"red data of #o, small a %artile it an sto%
2) T#e %ermea(ilit& 3t#e a(ilit& of t#e medi"m to allo, flo,
') T#e relations#i% (et,een ("ild5"% of dirt in t#e medi"m and t#e rate
of inrease of resistane to flo,)
04/12/16 Water filtration
8/18/2019 Filtration and Filter Types
9/18
8/18/2019 Filtration and Filter Types
10/18
T&%es of filters
8/18/2019 Filtration and Filter Types
11/18
Filter lassifiation met#ods
Medium based
•Sand flters
•Coal flters•Dual media(coal + sand)
•Mixedmedia(coal+sand+garnet)
Loading rate based
•Slow sand flters
•Rapid sand flters•High rate sand flters
8/18/2019 Filtration and Filter Types
12/18
Slo, sand filters
• 100s
• L)R 2)75)6 m'/d)m2
• 8mm
• Large area
8/18/2019 Filtration and Filter Types
13/18
Slo, Sand Filtration
04/12/16 Water filtration 13
8/18/2019 Filtration and Filter Types
14/18
Ra%id sand filters
• 1700s
• -ost ommon toda&
• 9a:,as#ing
• L)R5 120 m'/d)m2
• -ostl& 100 m2 s"rfae area)
8/18/2019 Filtration and Filter Types
15/18
04/12/16 Water filtration 15
8/18/2019 Filtration and Filter Types
16/18
04/12/16 Water filtration 16
8/18/2019 Filtration and Filter Types
17/18
Dual media flters
• L.R!"" m!#d.m$
• %inest sand on the top
8/18/2019 Filtration and Filter Types
18/18
04/12/16 Water filtration 1