background image

UCTION MANUAL

 

 

Page 1 

1  INTRODUCTION 

Congratulations on the purchase of your Platypus DAF Jar Tester.  
 
This manual contains useful information for its operation, maintenance and technical specifications. 
 
Please read and understand the manual before commencing jar testing. Please pass this manual 
on to any subsequent users. 
 
The Platypus DAF Jar Tester is an apparatus that saturates water with compressed air to form an 
air/water mixture. The air saturated water is dispersed into a jar’s contents after chemical 
coagulation/flocculation - to determine optimum operating conditions for dissolved air flotation 
including: 
 

 

DAF treatability

 

 

Saturator hydrostatic operating pressure  

 

 

Float cohesion

  

  Chemical treatment

 

including polymer addition for float cohesion 

 

Recycle rates

  

 

Subnatant turbidity

  

 

Design of downstream filters

  

 

2  OPERATING CONDITIONS 

To ensure a prolonged operating life the Platypus DAF Jar Tester should not be exposed to the 
following conditions; 
 

  Operation with ambient temperatures below 0°C or above 50°C 

  Prolonged periods in direct sunlight 

  Cleaning with aggressive chemicals or solvents 

  Corrosive fluids 

  Compressed air pressure should not exceed 700kPa (102psi) 

 

 

 

 

 

 

 

 

Summary of Contents for DAF Jar Tester

Page 1: ...UCTION MANUAL Platypus DAF Jar Tester ...

Page 2: ...nents 2 4 Operating Instructions 3 4 1 DAF Saturator Preparation 3 4 2 Distribution Manifold Preparation 4 4 3 DAF Jar Test 5 4 4 Refilling the Saturator 6 4 5 Calculating Recycle Rate 6 5 Preparing the Saturator for Storage 6 6 Maintenance 7 7 Supplementary Jar Testing Parameters 7 ...

Page 3: ...contents after chemical coagulation flocculation to determine optimum operating conditions for dissolved air flotation including DAF treatability Saturator hydrostatic operating pressure Float cohesion Chemical treatment including polymer addition for float cohesion Recycle rates Subnatant turbidity Design of downstream filters 2 OPERATING CONDITIONS To ensure a prolonged operating life the Platyp...

Page 4: ...UCTION MANUAL Page 2 3 OPERATING COMPONENTS DAF Saturator main components Platypus DAF Saturator ...

Page 5: ... rates that result in the funnel accumulating water lengthens filling time Fully open the air bleed valve to quicken the filling process by releasing displaced air Always fill the saturator with clean filtered water 5 Close the water fill valve the air bleed valve manifold outlet valves remain closed 6 Connect the compressed air line to the compressed air inlet Air pressure must not exceed 700kPa ...

Page 6: ...or approximately 90 120 seconds to achieve full saturation This period may need to be extended when the Saturator is operated at lower pressures The Saturator is ready to commence a DAF jar test subject to 4 2 4 2 Saturator outlet distribution system preparation priming and air purging To minimise the volume of unsaturated water and large bubbles of air entering the jars at a DAF test start firstl...

Page 7: ...mance of the test The compressor should remain running the air compressor s air receiver volume then offsets saturator outflow volumes to maintain pressure at the saturator Fully open the quarter turn manifold outlet valves for the jars under test Larger bubbles may initially be expelled to the jars at the commencement of the transfer This is minimised by the priming procedure so minimising the sm...

Page 8: ...ion jar test performed with 2L of sample 250mL of the sample was decanted prior to the DAF jar test During the DAF jar test 180mL of air saturated water was transferred 5 PREPARING THE SATURATOR FOR STORAGE When all testing is complete the saturator should be stored empty and depressurised This is achieved by the following 1 Close the compressed air inlet valve and disconnect the compressed air li...

Page 9: ...th clean water using a syringe Ensure the foreign body has been removed prior to reassembly 7 SUPPLEMENTARY JAR TESTING PARAMETERS The operating parameters tested during a DAF Jar Tester should be recorded for future comparison and to optimise full scale plant operating conditions Below are some suggested parameters to supplement existing jar testing records Saturator pressure Volume of air satura...

Page 10: ...UCTION MANUAL Page 8 Australian Manufacture Phone 612 9894 6777 Email info platypusjartester com ...

Reviews: