A Jar Test Apparatus is a laboratory device used to simulate and optimize the coagulation and flocculation processes in water and wastewater treatment. It helps determine the optimal dosage of coagulants, flocculants, or other chemicals needed to achieve desired water quality by testing small-scale samples.
The apparatus stirs water or wastewater samples with coagulants and flocculants at controlled speeds to mimic treatment plant conditions. Coagulants destabilize particles to form "pin flocs," while flocculants create larger "macroflocs" that settle faster.The process involves pH Adjustment: Adjusting pH (e.g., acid cracking for oily water) to optimize chemical performance.Chemical Dosing: Adding coagulants and flocculants sequentially to form flocs.Stirring and Observation: Mixing at low RPM to promote floc formation, followed by settling observation to assess clarity, turbidity, or floc size.
Stirrer | Display | RPM | Speed Controller |
---|---|---|---|
2 Paddles | Digital LED RPM & Timer | 200 | Analog |
4 Paddles | Digital LED RPM & Timer | 200 | Analog |
6 Paddles | Digital LED RPM & Timer | 200 | Analog |