Compressible Media Filter (Schreiber Fuzzy Filter) Ayman Shawwa, - - PDF document

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Compressible Media Filter (Schreiber Fuzzy Filter) Ayman Shawwa, - - PDF document

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3/16/2016 Compressible Media Filter (Schreiber Fuzzy Filter) Ayman Shawwa, Ph.D., P.E., BCEE, PMP www schreiberwater com Presentation Outline Compressible Media Filtration Technology Fuzzy Filter for Tertiary Phosphorus Removal Fuzzy

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Compressible Media Filter (Schreiber Fuzzy Filter)

Ayman Shawwa, Ph.D., P.E., BCEE, PMP

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Presentation Outline

  • Compressible Media Filtration Technology
  • Fuzzy Filter for Tertiary Phosphorus Removal
  • Fuzzy Filter for Carbon Diversion
  • Discussion
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  • Tertiary treatment
  • Water reuse (Title 22)
  • CSO treatment
  • Industrial applications
  • Primary effluent

filtration

High‐Rate Filtration Technology

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Schreiber Fuzzy Filter

Compressible Synthetic Media

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  • Made from a high grade Polymer – PPS

polyphenylene sulfide

  • Resistant to heat, acids, bleaches,

aging, sunlight, and abrasion

  • Easy to clean
  • Highly porous with 85 % void ratio
  • Proven Life of 10+ years!

Filter Media Properties

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Simple Filter Design

Reject Wash Water (during Wash Cycle Air (during Wash Cycle) Filter Influent Filtered Effluent Movable Upper Perforated Plate Stationary Lower Perforated Plate Motorized Worm Gear Screw Jack

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  • High filtration rate (30 to 40 gpm/ft2)
  • Inlet pressure < 8 psi ‐ Gravity effluent discharge
  • Solids storage capacity 1.2 lbs solids / cu. ft of media
  • Influent water is used for washing filter media
  • Low reject wash water (< 5%)
  • Media compression up to 40% ‐ High removal

efficiency of small particles (5 microns)

Design Features

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Media Compression

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Reject Wash Water Ratio

  • Conventional filters RWW ratio is 6‐15%
  • Fuzzy filter RWW ratio is 2‐4%

Where WB is wash water and WF is total filtered water %

  • x 100%

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  • Max. Operating Headloss
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  • Vessel material:
  • Hot dip galvanized

steel

  • Epoxy coated

carbon steel

  • 304 stainless steel

Standard Filter Vessel

Filter Model Design Flow @ 30 gpm/ft2 gpm mgd

18” x 18” 67 0.10 2’ x 2’ 120 0.17 3’ x 3’ 270 0.39 4’ x 4’ 480 0.69 5’ x 5’ 750 1.08 6’ x 6’ 1080 1.56 7’ x 7’ 1470 2.12 8’ x 8’ 1920 2.76

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Standard 7’x7’ Filter

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Standard 7’x7’ Filter

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Inlet Strainer

Filter Inlet Slotted strainer to retain large items (1/4" wide openings) Removed for cleaning

  • r

Flushed as needed

Stainless steel strainer (with 0.25” openings) traps larger solids to protect filter media

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Offload Filter Place on Pad

Make Piping & Electrical Connections. Filter is Ready for Start‐up!

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  • Medium head loss reaches a

preset level (e.g. 7 psi)

  • Effluent Turbidity reaches a

preset value (e.g. 1.9 NTU)

  • Preset filtration cycle time

(e.g. 8 hours) is met

Termination of Filtration Cycle

Clean Media at Start of Filtration Cycle Dirty Media at End of Filtration Cycle

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Wash Cycle

Media Wash (20 minutes)

Reject Wash Water Valve Open Influent 10 gpm/SF Upper Plate is Raised

Effluent Valve Closed

Purge (10 minutes)

Influent

Air

15 scfm/SF

Effluent Valve Closed

Upper Plate is Lowered 30 gpm/SF

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Wash Cycle Demo

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  • Media deep cleaning with

bleach and detergent is highly recommended every 12 months

  • Customized detergent

formulation determined through lab testing

Filter Media Maintenance

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Phosphorus Removal Process Effluent TP Concentration Biological phosphorus removal Chemical addition before secondary clarifier (co‐precipitation) Co‐precipitation followed by tertiary phosphorus removal technology Chemical treatment after secondary clarifier followed by tertiary phosphorus removal technology (post‐precipitation) TP > 1.0 mg/L TP < 1.0 mg/L and > 0.5 mg/L TP < 0.5 mg/L and > 0.1 mg/L TP < 0.1 mg/L and > 0.05 mg/L

Limits of Phosphorus Removal

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Tertiary P Removal Technologies

Tertiary Phosphorus Removal Technology Commercial Name Manufacturer Compressible Media Filter

  • Fuzzy Filter
  • WWETCO FlexFilter
  • Schreiber
  • Westech

High‐Rate Clarification

  • Actiflo
  • AquDAF
  • CoMag
  • Veolia
  • Suez
  • Evoqua

Continuous Backwash Sand Filters

  • Blue PRO
  • DynaSand
  • Blue Water
  • Parkson

Cloth Media Filters and Disk Filters

  • AquaDiamond
  • AquaDisk
  • Hydrotech Discfilter
  • Aqua Aerobic
  • Aqua Aerobic
  • Veolia
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Removal of Phosphorus

Phosphorus Fraction Total Phosphate (dissolved + solids) Ortho‐P Reactive (dissolved + solids) Dissolved Total Phosphate Dissolved Ortho‐P Reactive

To achieve < 0.1 mg/L P in effluent, dissolved (soluble) reactive P should be converted into solid before filtration

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Fuzzy Filter Pilot Unit

  • Automated pilot trailer

equipped with 18”x18” filter

  • Flat topography is required
  • Should be within 50’ of

influent source and effluent drop point

  • Requires 480/3/60 electrical

supply at 40 Amps

  • Influent flow 70 gpm at 8

psig max pressure

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Pilot Accessories & Instruments

  • Flex piping with quick

disconnect couplings

  • Submersible pump
  • Power cord for 480/3/60

supply

  • Turbidity meters
  • Data logging system
  • Magnetic flow meter
  • Pressure sensor
  • PLC with touch screen

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Pilot Fuzzy Filter Rental Agreement

  • Schreiber Technician – 3 to 5 days for set‐up,

start‐up, operation & training

  • Submit Test Report including data, graphs and
  • peration & performance summary
  • $5,000 plus Transportation Expense for 2 Week

Test Program

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Fuzzy Filter Installations

Northeast Water Reclamation Facility

  • Customer:

Clayton County

  • Location:

Georgia

  • Operational: Fall 2001
  • Number:

9 filters

  • Size:

7 ft x 7 ft

  • Capacity:

25 MGD

  • Application:

Tertiary

  • Effluent phosphorus limit of 0.17 mg/L
  • Coagulation and flocculation tank upstream of Fuzzy Filters

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Fuzzy Filter Installations

Lakes Area Sewer Authority WWTP

  • Customer:

Cass County

  • Location:

Michigan

  • Operational: Fall 2010
  • Number:

2 filters

  • Size:

3 ft x 3 ft

  • Capacity:

0.25 MGD

  • Application:

Tertiary

  • Effluent phosphorus limit of 0.2 mg/L
  • Co‐precipitation followed by Fuzzy

Filter

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Fuzzy Filter Installations Upper Montgomery Joint Authority WWTP

  • Customer:

Montgomery

  • Location:

Pennsylvania

  • Construction: 2017
  • Number:

4 filters

  • Size:

7 ft x 7 ft

  • Capacity:

9 MGD

  • Application:

Tertiary

  • Effluent phosphorus limit of 0.1 mg/L
  • Coagulation and flocculation tank upstream of Fuzzy Filters

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Fuzzy Filter Modular Design

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Fuzzy Filter Modular Design

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Primary Effluent Filtration (PEF) using Fuzzy Filter for Carbon Diversion

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Pilot‐Scale Demonstration Project

  • Two year PEF demonstration project at Linda WWTP

in California evaluating 5 filtration technologies

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Advantages of PEF for Carbon Diversion

  • Increases digester gas flow by 35 to 40%
  • Reduces blower power requirement by 20 to 25%
  • Increases secondary process capacity by 30 to 35%
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  • High rate filtration up to 40 gpm/SF
  • Small footprint ‐ Use of existing structures
  • Low backwash reject water
  • Easy maintenance
  • Reliable tertiary treatment ‐ Effluent P < 0.1

mg/L

  • PEF for carbon diversion

Benefits of Fuzzy Filter

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Thank you for your time! QUESTIONS?

Ayman Shawwa Schreiber L.L.C.

ayman@schreiberwater.com