How We Treated Fluorescent Pink Industrial Wastewater in a Jar Test
Key Result
A strongly colored fluorescent pink wastewater sample was tested using a staged chemical treatment process consisting of:
- 3000 ppm 08A Decoloring Agent
- pH adjustment to 7–8
- Anionic PAM for flocculation
Color removal and solid-liquid separation often work better when treated as two separate but connected stages.
The Treatment Challenge
Fluorescent wastewater can be visually striking even when the concentration of color-producing substances is relatively low. Many fluorescent dyes and pigments are designed to remain bright and stable during industrial processing, making them difficult to remove.
- Intense residual color
- Dissolved dye molecules
- Poor natural settling
- Fine suspended particles
- Variable pH
- Weak floc formation
Stage 1: Destabilizing the Color
In this test, 08A Decoloring Agent was added first at 3000 ppm to interact directly with the color-bearing substances, converting them into a form easily captured during flocculation.
Stage 2: Creating the Right pH Environment
The wastewater was adjusted to pH 7–8 after the decoloring agent and before PAM addition, optimizing chemical charge and polymer activity.
Stage 3: Building Larger Flocs
Anionic PAM was added to connect small destabilized particles into larger flocs. The process sequence is critical: Decoloring Agent → pH Adjustment → PAM.
What the Test Demonstrated
The experiment confirmed that the decoloring agent addressed color-related contaminants, while PAM improved solid-liquid separation. Note: 3000 ppm was specific to this laboratory sample.
Why Jar Testing Matters
Colored wastewater varies by product type, dye formulation, and production schedules. A good jar test evaluates:
- Floc size and settling speed
- Supernatant clarity and residual turbidity
- Sludge volume and treatment stability
Potential Applications
This concept applies to textile dyeing, pigment manufacturing, ink production, coatings, and paper coloring industries.
Bluwat Laboratory Testing Approach
Step 1: Identify wastewater characteristics
Step 2: Screen suitable decoloring or coagulation chemicals
Step 3: Optimize pH
Step 4: Select the appropriate PAM type
Step 5: Compare flocculation and settling performance
Step 6: Confirm treatment performance before plant-scale application
Need to Test Your Colored Wastewater?
If you are treating strongly colored, fluorescent, or dye-heavy wastewater, Bluwat Chemicals can provide chemical samples and professional jar-test support to optimize your treatment combination.