providing clear solutions - gov.nl.ca · providing clear solutions. 2 durpro has been filtering...

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….Providing Clear Solutions

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Durpro has been filtering liquids for 30 years.

Our expertise:FiltersSelf-Cleaning FiltersReverse OsmosisOzoneDisolved Air FlotationRoll Media Filters

….Providing Clear Solutions

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DRINKING WATER

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OZONE BASED SYSTEM

FOR POTABLE WATER DISPENSINGSYSTEMS

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We will discuss

Design ChoicesSystem OperationSystem Maintenance

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WHAT WERE THE GOALS?

Develop an affordable system to produce 1000 usgpd to be installed in a building where town people could come and fill their containers.The system should to have low maintenance

cost.The system would be chlorine free.

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THE GOALS CONTINUED.....

The system would be automatic. Water dispensing would automatically shut

down if water was not safe.More than one barrier for each identified

problem.

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THE GOALS CONTINUED.....

Simple tests would be sufficient to monitor the system.Critical components would be NSF approved.

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DEFINE THE PROBLEMS

Suspended solidsOrganic Color ... THM precursor,

aestheticsBacteriaGiardia and CryptosporidiumOther... Ca, Fe,... heavy metalspH

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WHERE TO START

COLOR REMOVAL DETERMINES THE SYSTEMCHOOSE THE HEART THEN BUILD THE SYSTEM AROUND THE HEART.

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START WITH COLOR

........BEFORE...................AFTER

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WHAT IS ORGANIC COLOR

GALLIC ACID

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WHAT ARE THM'S

CHLOROFORM IS A GOOD EXAMPLE

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BREAKING APART THE MOLECULES

THE USE OF AN OXIDANT BREAKS APART THE MOLECULESADDING CL, CLO2, or OZONESOME OXIDANTS ARE MORE POWERFUL THAN OTHERS.

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STRENGTH OF OXIDANTS

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Treating Organic Color

Add enough ozoneReverse OsmosisResin

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Ozone vs RO ..... Color

Both will remove Color and THM PrecursorsNote: To remove color is easy … to getthe THM precursors is more difficult

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Suspended Solids

Mostly broken down organic material– Some towns have some pre-filtration– Others do not, or have only coarse

filtration

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Ozone vs RO .... SuspendedSolids

Ozone will not break down or clog up but some ozone will be wastedRO requires good pre-treatment or the membrane will clog and requirereplacement.Treatment depends on the water quality.

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Ozone vs RO ..... Iron, Ca etc

Ozone produces a solid precipitate whichneeds to be removed... FiltersRO membranes will clog up and requirechanging in small systems.

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Ozone vs RO … Bacteria

Ozone will kill all Bacteria and Cysts as the water is treatedRO will generally remove Bacteria and Cysts. The bad part is the bacteria do accumulate in the membranes. The spores pass through and get into the tank and pipes.

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COMPONENTS OF THE SYSTEM

PRE-TREATMENTOZONE PRODUCTIONRESERVEPOST-TREATMENT

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PRE-TREATMENT

BACKWASHABLE CARBON FILTER− REMOVES SUSPENDED SOLIDS− REMOVES SOME LIGHT ORGANICS− REMOVES CHLORINE AND THM'S

FILTER CARTRIGE

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POST-TREATMENT

CARBON FILTERFILTER CARTRIDGESULTRA-VIOLET

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Cartridge FiltrationCartridge FiltrationGE Osmonics CartridgesGE Osmonics Cartridges

-Depth Filters

-Pleated filters

-Carbon filters

-High flow large diameter filters

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PRE AND POST TREATMENT

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SKID MOUNTED

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NON-SKID MOUNTED

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REACTOR

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CONTROLS

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OPERATING THE SYSTEM

PROGRAMMED TO WORK ALONE ONCE THE SYSTEM HAS BEEN SETUPMONITORS VARIOUS PARAMETERSDETECTS FAULTS AND STOPS THE SYSTEM IF REQUIRED

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OPERATOR KNOWLEDGE

OPERATORS SHOULD UNDERSTAND THE SYSTEM COMPONENTS AND HOW THEY INTERACT WITH THE CONTROLS

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MAINTENANCE

CARBON FILTERS .... YEARLYUV LAMP .....................YEARLYUV QUARTZ ................4 YEARSOZONE MONITOR ......YEARLYCARTRIDGES .............AS REQ'DMECHANICAL, COMPRESSOR, PUMP

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MAINTENANCE

REACTOR ........................ 12 YEARSOXYGEN (DRY AIR) ......... 8 YEARS

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PUMP

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4 GPM FILTER4 GPM FILTER--UV MultiUV Multi--barrier Potable Water Stationbarrier Potable Water Station

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1 GPM RO WATER SYSTEM

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THE END