What are the advantages and characteristics of spray drying polyaluminum chloride
2025-07-29
🔬 I. Advantages of physical and chemical properties
- Form and solubility
- Porous particle structure: the product obtained by spray drying is in the form of porous particles or hollow particles, which increases the contact area with water, and the wetting speed is faster than that of powdered products, and the solubility is better.
- Good flow: uniform particles, strong dustproof performance, easy to transport and add.
- Stability and adaptability
- High stability: the product activity is maintained well, the thermal stability is strong, and it is not easy to deliquesce during storage.
- Wide pH Adaptation range: applicable pH 5.0-9.0, especially when the water temperature is low, it can still stabilize flocculation.
⚡ 2. Advantages of Water Purification efficiency
- Fast purification ability
- The hydrolysis rate is fast, the adsorption caPacity is strong, the floc is large and dense, the sedimentation rate is increased by 30-50%, and the turbidity of effluent is significantly reduced.
- Under the same water quality, the amount is only 50% of the drum drying PAC, especially for high pollution water bodies.
- Deep processing effect
- It can effectively remove SS, COD, BOD and heavy metals (such as arsenic, lead, mercury) and has outstanding decolorization ability.
- The content of water-insoluble matter is less than 0.3% (plate and frame filter technology) to avoid pipe blockage.
💰 Three, economic and operational advantages
- Reduce overall costs
- The dosage is reduced to save the cost of agents; the dehydration performance is good to reduce the burden of sludge treatment.
- Although the equipment investment is high (about 5 million yuan), the long-term operating cost is lower.
- Easy to use
- High degree of automation, reduce manual labor intensity.
- It can be directly added or dissolved for use, suitable for continuous operation in large Water Plants.
🛡 Safety and environmental protection
- High security
- There is less residual aluminum salt, and the salt content in water increases less after treatment, which has no impact on drinking water safety.
- Excessive dosage will not cause turbidity or secondary pollution of water quality.
- Environmental protection applicability
- Widely used in drinking water, industrial wastewater (printing and dyeing, electroplating, paper making), urban sewage and other fields, in line with GB15892-2009 standard.
⚖ Comparison and summary with traditional processes
| characteristic | spray drying PAC | roller drying PAC |
| Granular morphology | The porous/hollow particles have good fluidity | Flake/powder, easy to lump |
| The amount of injection | Reduce by 50% (highly polluted water) | The dosage is large |
| water-insoluble | ≤ 0.3% (low risk of blockage) | higher |
| Salinity regulation | 40-60% (highly adjustable) | The range is narrow and easy to inactivate |
| safety | No residual risk, suitable for drinking water | It contains more impurities and may cause secondary pollution |

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