Bluewater Bio FilterClear Ove vervie rview w Bw BwB: : Filt - - PowerPoint PPT Presentation

Bluewater Bio

FilterClear Ove vervie rview w

32

Bw BwB: : Filt lter erClea Clear™ ™

32

33 14

Com

• mpared to:

to:

• Continuous backwash filters
• Deep bed filters
• Other multimedia filters

Key ad advan vantages o

• f Filter

erCl Clear ear ar are:

• Up to four media of differing particle size & density

– reduces blinding of upper layers

• Two fine ‘surfaces’ giving improved filtration
• One +ve charged surface adsorbs organics
• Naturally occurring materials (think Volvic) …
• engineered for:

– greater voidage – increased holding capacity – higher loading rates – better filtration performance

Filt lter erClea Clear: A Adv dvant ntage ges

33

34 14

Filt lter erClea Clear: F Four m media ia

34

Anthracite, mode = 1.4 mm Silica, mode = 0.70 mm Alumina, mode = 0.60 mm Magnetite, mode = 0.35 mm

Photographs taken by Philani Ncube/Pete Jarvis, Cranfield University

35 14

Filt lter erClea Clear: F Four m media ia

35

Physical Ch Char arac acteristics cs of M Media

Data from Philani Ncube/Pete Jarvis, Cranfield University

Me Mediu dium Mat Material al De Dens nsity (t/ (t/m3) Mo Modal dal par article siz size (mm) mm) Pac acki king void (fr frac action) Anthracite C 1.41 1.4 0.51 Silica SiO2 2.59 0.70 0.52 Alumina Al2O3 3.92 0.60 0.55 Magnetite Fe3O4 5.10 0.35 0.47 Loose packing of spheres ≈ 0.42 Compacted packing of spheres ≈ 0.33

39

Filt lter erClea Clear: Applic licatio ions

39

• Municipal Water & Wastewater

− Tertiary treatment − Potable water pre-filtration − Pre-filtration for RO desalination − Washwater recovery − Framework Supplier to Anglian Water

• Industrial / Commercial

− Process and cooling water filtration − Rainwater harvesting − Industrial effluent treatment − Mobile water treatment

• Scaleable from 1 – 330 l/s per filter

Triplex plant, 1.84m dia vessels, capacity up to 56 l/s Kiosk size: 13m x 3.5m

40

40

Filt lter erClea Clear vs Compe mpetition

40

Comparison son of o

• pti

tion

• ns f

s for terti tiary f filtr tration

• n a

at a a waste tewate ter t treatm tment w t works: s:

Feature FilterClear Rapid Gravity Sand Filter Continuous Backwash Sand Filter Disk Filter Microfilter

Removes >75% of suspended solids

    

Compact footprint

    

Low energy consumption

    

Low capital cost

    

Low backwash volume

    

No chemicals required

    

41

• High quality filtrate, in a single step
• High loading rate, giving reduced footprint and fewer/smaller vessels
• High dirt holding capacity, giving reduced backwash volume
• Enables reduced CAPEX, OPEX & whole life cost
• No chemicals required for most applications

Filt lter erClea Clear: B Benefit its

41

42

Bw BwB: Pi Pilot / / Demon

• nst

stration Pl Plan ants

• Two containerised pilot plants for water &

wastewater trial purposes

• Smaller test rigs for quick testing
• Particle size analysis

42