Waste Water Treatment for Industrial Operations

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Waste Water Treatment for Industrial Operations
Matrix EnvironmentalIncorporated

• William N. Torline
• Brian Lamphron
• 1-888-345-1915

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INTRODUCTION
Anionic
Amphorteric
Flocculation
Clarification
pH
Flow
BOD
Cationic
Capacity
Polymer
Coagulation
Neutralization
Compliance
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TOPICS

• Terms and meanings
• Waste treatment technologies
• Typical process
• Typical procedure

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TERMS AND MEANINGS

• pH
• Scale 0 to 14 7 is Neutral
• Concentration of H ions
• Why control pH?

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TERMS AND MEANINGS

• Coagulation
• Formation of chemical flocs that adsorb, entrap,
  or bring suspended matter together
• Results from opposite charge
• Particles are destabilized and form visible pin
  floc

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TERMS AND MEANINGS

• Flocculation
• Enlargement of pinfloc to speed separation
• Occurs via addition of long chain polymer
• Polymer actually grabs onto several pinflocs and
  pulls material together

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TERMS AND MEANINGS

• Clarification
• Removal of insoluble particles from a suspension
• For metal removal Typically by sinking
• For BOD removal Typically by floating

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TERMS AND MEANINGS
Industrial Waste Water
Before Treatment
After Treatment
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WASTE TREATMENT TECHNOLOGIES

• Pollution prevention
• Point source
• End of pipe

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MINIMIZATION METHODS

• Drag out / product control
• Counter-current rinsing / product recovery
• Closing the loop

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WHAT IS DRAG OUT?

MAKE UP














DRAG OUT


DRAG IN

















PROCESS TANK
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BENEFITS OF CONTROL

• Reduces contaminant / product loss
• Keeps material where it is needed
• Improves waste treatment reproducibility

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BATCH RINSING
FRESH WATER
FRESH WATER
RINSE 1
RINSE 2
RINSE 3





































OVERFLOW
OVERFLOW
OVERFLOW
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COUNTER-CURRENT RINSING
FRESH WATER
RINSE 1
RINSE 2
RINSE 3





































Overflow to Recovery System or Waste Treatment
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POINT SOURCE
RINSE 1
RINSE 2
RINSE 3






































CONTAMINANT REMOVAL
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POINT SOURCE

• Recovery of materials and rinse water
• Technologies
• Ion exchange
• Ultrafiltration (UF)
• Reverse osmosis (RO)
• Carbon filtration
• Evaporation
• Precipitation
• Standard filtration

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POINT SOURCE - Ion Exchange -

• Normal operation
• Ion capture
• Regeneration operation
• Ion recovery
• Common use
• Water softening
• Water purification

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POINT SOURCE - Ultrafiltration -

• Pressure-driven
• Separation of colloids and macro-molecules from
  water streams
• Commonly used for emulsified oil separation

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POINT SOURCE - Reverse Osmosis -

• Pressure-driven
• Separation of ions from a water stream
• Commonly used for
• Water purification
• Metal plating rinses
• Boiler feed water
• Ion exchange pretreatment

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POINT SOURCE - Carbon Filtration -

• Separation technique based on adsorption
• Intimate contact is required for proper operation
• Used for the removal of
• Colors
• Odors
• Organics

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POINT SOURCE - Evaporation -

• Energy intensive method for contaminant
  separation
• Applications
• Ion exchange regenerant
• RO / UF concentrate
• Spent cleaners
• Floor scrubbing water

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END OF PIPE TREATMENT

• Recovery is not the issue at this point
• Treatment to discharge requirements is goal
• Technologies
• Chemical precipitation
• Sinking sludge clarifiers
• Floating sludge dissolved air flotation
• Biological activity
• Various combinations of point source technologies

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TYPICAL PROCESS
To First Stage pH Adjustment
Stream Separation
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END OF PIPE TREATMENT Typical Process

• Precipitation
• Chemical separation
• Materials used include
• Acids and caustics
• Coagulants
• Flocculants

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END OF PIPE TREATMENTSinking Sludge - Clarifier

• Solubility parameters of the solution are forced
  to produce a sludge
• Sludge density / weight overcomes the buoyancy
  factor
• Sludge / contamination is removed

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TYPICAL PROCEDURE

• Adjust mixed stream pH
• Proper mixing is key!
• Adjustments made to improve
• Pin floc formation
• TDS removal (BOD component)
• Metal contaminant removal
• Compliance

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TYPICAL PROCEDURE
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END OF PIPE TREATMENTFloating Sludge - DAF

• Solubility parameters of the solution are forced
  to produce a sludge
• Sludge density / weight is overcome by the
  buoyancy factor (with a little help)
• Sludge / contamination is removed

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TERMS AND MEANINGS

• pH
• Adjust pH as required
• Always confirm by testing

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END OF PIPE TREATMENTBiological Activity
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TYPICAL PROCEDURE

• Monitor waste stream
• Control system
• Equipment displays
• Operator experience and judgment !!!

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CONCLUSION

• EACH WASTE STREAM IS UNIQUE
• DEFINE ALL WASTE STREAMS, THEN DEVELOP A
  TREATMENT STRATEGY THAT MEETS YOUR NEEDS
• BE AWARE OF CHANGES TO THE SYSTEM AND TAKE
  APPROPRIATE STEPS
• DISCHARGE COMPLIANCE WILL BE ACHIEVED