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Filter Design and Cost Analysis

This document summarizes the calculations for sizing and costing a water filter. It includes calculations for filter area and thickness based on flow rate, dirt holding capacity, and pressure requirements. It also includes calculations for the weight and cost of filter media (anthracite, sand, gravel, pebbles) and other accessories (pipes, valves, etc.). The total estimated cost of the filter system including the body, media, and accessories is 367540 Rs.

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hassan11783
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2K views4 pages

Filter Design and Cost Analysis

This document summarizes the calculations for sizing and costing a water filter. It includes calculations for filter area and thickness based on flow rate, dirt holding capacity, and pressure requirements. It also includes calculations for the weight and cost of filter media (anthracite, sand, gravel, pebbles) and other accessories (pipes, valves, etc.). The total estimated cost of the filter system including the body, media, and accessories is 367540 Rs.

Uploaded by

hassan11783
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as XLSX, PDF, TXT or read online on Scribd
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Filter calculation

ACCORDING TO HYDRAULIC FLOW RATE ACCORDING TO DIRT HOLDING


FLOW 75 m3/h FLOW
FILTER RATE 15 m3/m2/h TSS
DIRT LOAD
BACKWASH TIME
Area of filter 5 FILTER AREA
Dia of filter 2.52 FILTER DIA

Thickness calculation DIA OF FILTER


Design pressure 5 kg/cm2 HOS
Welding Cofficient 0.85 shell thickness
Corrosion allowance 1.5 Dish thickness
Specific gravity 1050 kg/m3
Surface area
Shell thickness 7.11 mm
cylinder
Disc
Man hole
Filter Body weight Total
Vertical Body 804 kg
top 327 kg Assumed prices
Bottom 327 kg MS
Man Hole 45 kg Anthracite
Leg/Angle 200 kg sand
Total Weight 1703 kg gravels
Total Weight With margine 1788 kg pebbels
Total Body cost 178800 Rubber lining
Epoxy paint

Media Weight Calcutaion


Material height(meter) dia density(Kg/m3)
Anthracite 0.4 2 750
Fine Sand 0.4 2 1569
Corase 0.2 2 1569
Gravels 0.2 2 1569
pebeles 0.1 2 1569
Total Media cost

Dia of pipe(meter) 115.19 125 NB

Accessories
Material Quantity cost per unit Total cost
Pipe 8 1100 8800
BFV 5 5100 25500
FLANGE 14 1200 16800
DISTRIBUTOR 1 20000 20000
ELBOW 8 1050 8400
Epoxy Paints 2 5760 11520
Nut & bolt 1 4000 1000
pressure gauge 2 2000 4000
Differential pr. Switch 1 25000 25000
Feed rotameter 1 12000 12000
rubber lining 0 13440 0
Sampling Cock+rinse V.+air
vent pipe+rubber gasket 1 10000 10000
Total Cost 143020

Total cost (Body+media+other) 367540


CCORDING TO DIRT HOLDING
75 m3/hr
90 ppm
9 kg/m2
4 hr
3
2

2 meter
2 meter
8 mm
10 mm

Surface area
12.56 m2
6.28 m2
0.3925 m2
19.2 m2

100 Rs/kg
25 Rs/kg
5 Rs/kg
5 Rs/kg
5 Rs/kg
700 Rs/m2
300 Rs/m2

total weight(kg) Cost


942 23550
1971 9855
985 4925
985 4925
493 2465
45720

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