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High Turbidity Water Treatment and PAC Solutions
As a professional manufacturer of water treatment chemicals, ECOLINK has found that high turbidity water is one of the most common and most challenging issues faced across industries and regions. Whether it is mining runoff, river water, or municipal wastewater, rapid clarification and stable discharge are always top priorities.
Sources of High Turbidity Water
By industry classification, high turbidity water typically comes from:
⭕ Mining and sand washing plants: Rich in fine particles and minerals, with turbidity reaching thousands of NTU.
⭕ Coal washing plants: Contain oily fine coal particles with slow settling rates.
⭕ Paper mills and food factories: High content of organic colloids and pigments.
⭕ Municipal and surface water: Turbidity fluctuates due to rainfall and erosion.
⭕ Construction sites: Suspended solids and concrete residues exceed limits.
Classification by Pollution Level
● Moderate turbidity (100–500 NTU): Can be treated with combined PAC + PAM.
● High turbidity (500–3000 NTU): Requires multi-stage dosing or gradient mixing.
● Extremely high turbidity (>3000 NTU): Requires efficient PAC combined with cationic PAM to achieve better sedimentation and dewatering effects.
Main Treatment Challenges
× Floc formation is unstable or incomplete
× Effluent remains turbid after dosing
× Slow settling and unclear water line
× High chemical consumption and cost
× Equipment scaling or clogging issues
Regional Turbidity Issues
Americas: Mining areas in Chile, Peru, and Colombia face water bodies with high turbidity (over 2000 NTU) and rich mineral content. Our high-basicity PAC works efficiently even at pH 6–9, forming dense flocs and making the water clear.
Africa: In Nigeria, Ghana, and South Africa, industrial wastewater often contains large amounts of oil and organic matter. Our yellow high-purity PAC combined with cationic PAM achieves excellent demulsification and clarification effects.
Southeast Asia: During the monsoon season, surface water turbidity in countries like Vietnam and Indonesia increases sharply. Our spray-dried PAC granules dissolve quickly and are ideal for emergency water supply systems.
Our PAC-Based Solutions
We provide customized solutions based on water quality and regional challenges:
1. Customize PAC grades for different pH values and impurity contents
2. PAC + PAM synergistic effect accelerates sedimentation rate
3. Use filter press production for high purity and high stability products
4. On-site technical guidance to achieve optimal dosage control
Performance results:
√ Turbidity reduction up to 90%
√ Floc formation speed increased by 30%
√ Clear and stable discharge
Frequently Asked Questions
Q1: How much PAC should be used?
Start with 100–200 ppm, then adjust based on jar test results.
Q2: Can PAC and PAM be used together?
Yes, use PAC first for coagulation, then PAM to enhance flocculation.
Q3: What is the ideal pH range for PAC?
The optimal pH range is 5–9.
Q4: How does PAC compare to alum?
Faster flocculation, wider pH adaptability, less sludge, and clearer water quality.
Q5: Is PAC suitable for emergency turbidity control?
Absolutely. PAC reacts quickly and can form visible flocs within minutes.
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