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Media filtersDisk FiltersCentrifugal separatorsBag filtersCartridge filtersSweeper jets

PEP Products

Media FiltersMedia Filters

How It Works

Sand Media Filtration

SMF

HMF

BMF

SMF HMF BMF…Filter Selection

SMF2-FG Media Filter

SMF2-FG (non metallic)

Flow rates from 43 to 251 GPM

Single or multiple vessel design

NEMA 4X control panel

Patent pending universal face pipe design

Stainless steel base

Metal pumps – longer life

Oversized actuator, 600 in- lb torque

HMF2 Media Filters

Two Models:•Stainless steel – 100 PSI

•Carbon steel – 150 to 300 PSI

Flow rates from 17 to 251 GPM

Patent pending universal face pipe design

Metal Pumps

NEMA 4X control panel

Fusion bonded exterior coating

Stainless steel base

Oversized actuator, 600 in-lb torque

NSF approved fusion bonded interior coating

Dual Source Module

THREE MODES OF OPERATION

Manual Mode: Allows selecting between tower/system water and city water at the flip of a switch. (Tower water is preferred during peak summer demand and city water during winter/spring/fall or at initial start-up for conserving water and water treatment chemicals.)

Remote Mode: Allows backwash water source selection via remote input from BMS.

Water/Chemical Conservation Mode: Water treatment chemical usage is optimized by allowing a conductivity meter to determine backwash water source. If system water conductivity is low, city water is utilized. If conductivity is high, instead of bleeding water to drain, it is used to backwash the filter.

BMF Media Filters

50 psi (standard), 100 & 150

Carbon or stainless steel construction

Metal or non metallic face piping

Flow rates to 1000 GPM per vessel

Dual and multiple vessel configurations

BMF Media Filter Cut-Away

High Performance Media Filter

IMF Filter in Forward Flow

IMF in Backwash

Radial bed fluidizers lift media for rigorous backwash

Flush bottom annular V-notch under-drain eliminates stagnant water

IMF Filter

CL (Closed Loop) Media Filter

Closed loop applications

Dual electric actuators

150 and 300 PSI rating

Carbon or stainless steel

Portable (on wheels)

Centrifugal Centrifugal SeparatorsSeparators

Centrifugal Separators

How They Work

Flow rate to 5,000 GPM

Carbon Steel or Stainless

Auto Purge

No moving parts

Particle removal down to 74 microns

Complete custom skids

Tower Clean Systems

ICS Tower Clean System

Bag FiltersBag Filters

BGFS (Bag Filters)

How They Work

BGFS Filter

Carbon or stainless steel

Flow rates to 2000 GPM

Single or multi housing skids

Auto housing change over

Cartridge Cartridge FiltersFilters

SCF Cartridge Filter

Carbon or stainless steel

Flow rates to 525 GPM

Single or multiple vessel systems

Custom skids

Sweeper JetsSweeper Jets

ISJ Series Sweeper Jets

Flow Rate: 1 gpm* / ft2 of tower basin area (*flow rate into jet nozzle)

Jet Spacing: ~10” between jets

Note: Sweeper jet flow rate values are at 10 psig

Old Jet vs. New Jet

Typical Side Stream Installation

Fill AreaFill Area

Tower Basin / SumpTower Basin / Sump

Discharge Pipe / Filter OutletDischarge Pipe / Filter Outlet

Suction Pipe / Filter InletSuction Pipe / Filter Inlet

Side Stream Filter SkidSide Stream Filter Skid

UFF Filter Face Lift

Flow rates from 17 to 475 GPM

Patent pending universal face pipe design

Metal Pumps

Heavy duty 3-way ball valves (mechanically linked)

NEMA 4X control panel

Stainless steel base

Oversized actuator, 600 in-lb torque

Retrofits to ANY filter regardless of manufacturer

Typical Dirty System - Fouling

Clean

Moderate FoulingFouling is the formation of

deposits on heat transfer surfaces.

Heavy Fouling

Side-Stream Filtration

400 Ton Cooling Tower

Based on tonnage and 3 gpm/ton:

400 Ton x 3 gpm/ton = 1200 gpm5% x 1200 gpm = 60 gpm side stream flow rate

Based on side stream filter flow rate of one system volume per hour:

For example: Estimated system volume = 3,500 gallons At a turnover of 1 system volume per hour, 3,500 gallons/hr x 1 hr/60 min.= 58 gpm side stream flow rate

Multiple Vessel Configurations

Selecting the Right Tool

Sand Filtersor

Separators

Typically Separable Typically Separable MaterialsMaterials

Specific Specific GravityGravity

Aluminum 2.7

Ashes (coal) 2.0

Brass 9.0

Bronze & Copper 8.9

Carbon/Concrete/Lava 1.8 ~ 2.5

Coal (Anthracite) 1.3 ~ 1.9

Earth (silt/soil) 1.2 ~ 2.0

Glass (Crystal) 3.0

Granite / Gravel 2.5 ~ 3.0

Graphite 2.3

Iron 7.8

Lead 11.3

Limestone 2.8

Manganese 7.4

Nickel 8.9

Sand 2.6 ~ 2.8

Steel 7.8

Tin Ore 6.4 ~ 7.0

0

10

20

30

40

50

60

70

80

90

100

74+ 74-40 40-20 74+ 74-40 40-20 74+ 74-40 40-20 74+ 74-40 40-20

Particle Size (microns)

Effic

ienc

y (%

)

Multiple Pass

Single Pass

Centrifugal Separator Solids Removal Efficiency

Specific Gravity 7.5 Specific Gravity 3.6 Specific Gravity 2.6 Specific Gravity 1.7 Microns Microns Microns Microns

Most particulate in cooling tower water have a specific gravity in the range of 1.6 and are less than 20 microns; well below the operating limit of centrifugal separators.

0

10

20

30

40

50

60

70

80

90

100

74+ 74-40 40-20 20-10 10-5 5-1

Particle Size (microns)

Effic

ienc

y (%

)

Sand MediaSeparator

Typically, greater than 98% of contaminants in cooling tower water are less than 20 microns. Centrifugal separatorefficiency at this level is approximately 12%, compared to approximately 90% for standard efficiency sand media filters.

Sand Media Filter Vs. Centrifugal Separator

(particle specific gravity 2.6)

ParticleCount(per 100 ml)

0

100,000,000

200,000,000

300,000,000

400,000,000

500,000,000

600,000,000

0.5 < 1 1 < 5 5 < 15 15 < 30 30 < 50 > 50

Microns

Typical Distribution of Particles by Particle Count

Typical Distribution of Particles by Particle Volume

Particle Volume Distribution(mm3 per 100 Liters)

0

2,000

4,000

6,000

8,000

10,000

12,000

14,000

16,000

18,000

20,000

0.5 < 1 1 < 5 5 < 15 15 < 30 30 < 50 > 50Microns