Procurement guide for high quality polyaluminum chloride
Release time: 2025-08-01
1. Screening of core quality indicators
- Alumina content (Al₂O₃)
- Industrial grade: ≥28% (plate frame/spray type), drinking water grade: ≥30%;
- Note: High content (30%) may be ineffective in acidic/low turbidity water and should be matched to the water quality
- Adjust the salinity
- High salt base (80%-90%): high turbidity wastewater (coal washing, printing and dyeing);
- Low salt base (45%-60%): drinking water/low turbidity wastewater, anti-return to turbidity.
- Appearance and impurity control
- Quality characteristics: light yellow/golden yellow particles, insoluble matter in water ≤0.6% (spray type ≤0.3%);
- Industrial grade: brown, water insoluble matter ≤1.5%.
- PH adaptability
- Scope of application: pH 5-9, beyond the range needs adjustment.
II. Key points of supplier evaluation
Assessment dimensions | Key requirements |
Qualification verification | Check the production license and ISO certification, and give priority to spray process manufacturers |
Price reference | Spray drying type (30%-32%): 1300-1600 yuan/ton; 28% products with less than 600 yuan/ton have the risk of false labeling |
Sample testing | The same method was used to make a beaker experiment to observe the formation speed and sedimentation effect of flocs |
customized service | Supports salt base degree /PHD customization (e.g. 45% salt base degree for drinking water grade) |
3. Optimization of procurement process
A [requirement analysis] --> B [supplier screening] --> C [sample testing] --> D [contract terms negotiation] --> E [delivery quality inspection] --> F [after-sales tracking]
critical control point ：
- Contract terms: specify the penalty for delayed delivery (such as withholding the deposit + refusal to settle accounts);
- Quality inspection standard: arrival test alumina content/salinity, deviation>2% can be rejected;
- Payment method: "payment in the next month after goods arrive" is preferred.
IV. Technical parameters and packaging requirements
project | ask |
surface | Yellow granular (uniform pale yellow for drinking water grade) |
content | ≥26% (industrial grade), drinking water grade ≥30% |
packing specifications | 25kg/bag, in line with national standard |
Document requirements | The product qualification certificate and health permit shall be attached with the goods |
V. Risk Avoidance and Case Reference
- Environmental risk: regular detection of aluminum ion residues in water;
- Operational safety: wear protective equipment and avoid skin contact with solution;
- successful case ：
- Changsha Water Supply Company uses 30% spray type PAC, and the water quality standard rate is more than 99.5%;
- Electroplating plant wastewater treatment: 28% plate frame PAC consumption 0.5-2kg/ton water, COD removal rate>85%.
- Changsha Water Supply Company uses 30% spray type PAC, and the water quality standard rate is more than 99.5%;
VI. Quick Reference Table for Procurement Decisions
dimension | priority option | Key points to avoid |
Content process | Drinking water> 30% spray drying type | Refuse suppliers who do not provide a test report on content |
supplier | Free samples + customized service | Verify performance contracts for the past year |
agreement | Clear quality inspection standards + penalty clauses | Avoid "full payment in advance" |
Through structured procurement strategies, enterprises can reduce costs by 15%-30% and improve processing efficiency. It is recommended to carry out small tests (such as beaker experiments) combined with water quality to select the optimal solution.
Related Blog
Reception of philippines clients
2025-04-11 15:00
Solution of floc texture frivolous in water treatment process
2024-05-16 00:00
Procurement guide for high quality polyaluminum chloride
2025-08-01 10:58
Hotline:
Address：The west industrial cluster area of Jiaozuo City, Henan province, China
Email：aefk@aefkchem.com
Foreign Trade Manager ：+86-15803910375
Copyright© 2024 Henan Aierfuke Chemicals Co., Ltd www.300.cn SEO This website supports IPv6 Privacy Policy