Poly Ferric Sulfate (PFS) is a chemical compound that is becoming increasingly familiar in the field of water treatment, helping to improve the quality of wastewater and domestic water supply. With its outstanding flocculation ability, PFS is not only effective in removing suspended solids and heavy metals, but also creates large flocs that help the deposition process take place quickly. Today’s article, Dong A Chemical will help you learn what Poly Ferric Sulfate is, the composition, structure, properties and applications of this compound.
Poly Ferric Sulfate (PFS) is a chemical widely used in the water treatment industry. It is an inorganic salt with the chemical formula Fe(SO₄)₃.nH₂O, where n is an integer. PFS has the ability to precipitate suspended substances in water, helping to purify water and remove impurities. PFS is a polymer with many complex iron ions linked together through hydroxide and sulfate bridges.
PFS is saffron yellow
Iron ion: Iron ion (Fe³⁺) is the main component that makes up the structure of PFS.
Hydroxide group: Hydroxide group (OH⁻) creates bonds between iron ions, forming a polymer structure.
Sulfate group: Sulfate group (SO₄²⁻) also participates in creating bonds and stabilizing the polymer structure.
The structure of PFS is quite complex and changes depending on production conditions. However, in general, PFS has a three-dimensional network polymer structure, with iron ions located at the network nodes and hydroxide and sulfate groups forming bridges between the network nodes. This structure has the following characteristics:
Complexity: The structure of PFS is very complex and difficult to accurately determine using conventional analytical methods.
Diversity: Depending on production conditions (pH, temperature, reaction time), the structure of PFS can change, leading to different properties.
Stability: The network polymer structure of PFS provides high stability to this compound.
Poly Ferric Sulfate (PFS) has many special properties that make it an effective water treatment chemical such as:
oly ferric sulfate is a flocculating agent
The mechanism of action of PFS is mainly based on its ability to precipitate and adsorb pollutants in water. Specifically, PFS works according to the following mechanisms:
Colloidal particles in water: Most suspended particles in water have a negative charge. This makes them repel each other and make it difficult to agglomerate.
Role of PFS: Iron ions in PFS have a positive charge. When put in water, they will neutralize the negative charge of colloidal particles. As the surface charge of the particles decreases, the repulsion between the particles also decreases, allowing them to coalesce into larger flocs.
Formation of flocs: After the colloidal particles are neutralized, iron ions will act as bridges, linking the particles together to form large flocs.
Adsorb pollutants: These flocs have the ability to adsorb other pollutants such as heavy metals, organic substances, bacteria,… causing them to settle to the bottom of the tank.
With heavy metal ions: Iron ions in PFS have the ability to form complexes with heavy metal ions such as lead, cadmium, copper,… reducing their toxicity and increasing their sedimentation ability.
With organic substances: PFS can also form complexes with some organic substances, helping to remove them from water.
Acidity: PFS is weakly acidic, helping to neutralize water alkalinity and adjust pH to a suitable level for flocculation.
Affects the flocculation process: The pH of water affects the effectiveness of the flocculation process. Adjusting pH with PFS helps optimize this process.
The mechanism of action of PFS in water treatment is based on the ability to neutralize charges, adsorb bridges, form complexes and adjust pH. Thanks to these properties, PFS becomes an effective water treatment chemical, widely used in industrial and civil sectors.
Poly Ferric Sulfate (PFS), also known as Polymeric Iron Sulfate, is a chemical compound that plays an important role in water and wastewater treatment. Thanks to special properties such as high flocculation ability, complex formation and pH adjustment, PFS is widely used in many different fields.
Application of Poly Ferric Sulfate
Water treatment:
Removes suspended substances, colors, flavors and pathogenic bacteria.
Reduces turbidity and increases water transparency.
Adjust water pH.
Wastewater treatment:
Remove organic substances, inorganic substances, heavy metals.
Reduce BOD (Biological Oxygen Demand) and COD (Chemical Oxygen Demand).
Eliminate odors.
Separating sludge, reducing the amount of sludge.
Sludge treatment:
Dewatering sludge, reducing sludge volume.
Stabilizes sludge, reduces odors.
Paper industry: Used to remove organic substances and colors during the paper production process.
Textile dyeing industry: Removing dyes and chemicals in wastewater.
Mineral exploitation industry: As a coagulant to recover minerals from wastewater.
Urban wastewater treatment: Removes pollutants in domestic wastewater.
Poly Ferric Sulfate is known for its many outstanding advantages, making it the top choice in water treatment. One of the strengths of PFS is its ability to reduce costs and high efficiency in the flocculation process.
PFS can work well without using many other chemicals. According to research, the cost of using PFS is reduced by 10% to 20% compared to other polymers such as PAC and alum.
Sludge from PFS has a compact structure and is easier to filter than sludge from many other chemicals. This helps save costs for further processing.
When using PFS, the quality of treated wastewater is significantly improved, helping to reduce environmental pollution and protect public health.
The use of Poly Ferric Sulfate must comply with certain regulations to ensure safety and effectiveness.
Preparation: PFS needs to be mixed into an 8-10% solution before being introduced into the water source.
Dosage: Recommended dosage for wastewater treatment systems is usually from 20 to 200 mg/m³, depending on wastewater properties.
When using PFS, attention should be paid to the following issues:
Storage: PFS should be stored in a dry, cool place and away from direct sunlight.
Contact: If contact with eyes, rinse immediately with clean water and seek medical attention if symptoms of irritation occur.
Poly Ferric Sulfate not only brings high efficiency in water treatment but also has positive impacts on the environment.
PFS helps reduce pollution in water sources, remove heavy metals and substances that cause unpleasant odors, and protect the safety of water ecosystems. When PFS is used in water treatment, the amount of water discharged into the environment will be cleaner, minimizing pollution to natural water sources.
PFS has a lower cost than many other coagulants, which saves money for water treatment plants. According to research, PFS can save 10% to 20% of costs compared to other chemicals while still ensuring high treatment efficiency.
Poly Ferric Sulfate (PFS) and Poly Aluminum Chloride (PAC) are two popular coagulant chemicals widely used in water treatment. Both have the ability to precipitate suspended particles, organic substances and heavy metal ions, helping to purify water. However, they have distinct characteristics and are suitable for different applications.
Compare Poly Ferric Sulfate (PFS) and Poly Aluminum Chloride (PAC)
Mechanism of action: Both PFS and PAC work based on the mechanism of neutralizing charges and creating bridges between colloidal particles, causing them to agglomerate and settle.
Applications: Both are widely used in water treatment, industrial and municipal wastewater, and sludge treatment.
| Nature | Poly Ferric Sulfate (PFS) | Poly Aluminum Chloride (PAC) |
| Main ingredients | Iron ion, hydroxide group, sulfate group | Aluminum ion, hydroxide group, chloride ion |
| Structure | Complex network polymer | Polymer structure is more diverse |
| Acidity | Weak acidity | Stronger acidity than PFS |
| Ability to create complexes | Good ability to form complexes with heavy metals | Good complexing ability, especially with organic substances |
| Coagulation efficiency | High, creates large flocs, settles quickly | Very high, fast flocculation effect |
| Affects pH | Slightly reduce pH | Reduce pH more strongly |
| Application | Suitable for water with high alkalinity, industrial wastewater treatment | Suitable for many types of water, especially water with low pH |
Choosing PFS or PAC depends on many factors, including:
Water quality: Composition, pH, turbidity of water.
Treatment goal: Remove any pollutants.
Operating conditions: Equipment, processing procedures.
Cost: Price of chemicals, operating costs.
Both PFS and PAC are effective coagulants, but each has its own advantages and disadvantages. To choose the most suitable chemical, it is necessary to conduct small experiments to evaluate the effectiveness of each chemical under specific conditions.
In summary, Poly Ferric Sulfate is an effective water treatment chemical, with many important applications in life and production. Thanks to its outstanding advantages, PFS is increasingly widely used and has become one of the most popular water treatment chemicals today.
The above article by Dong A has just introduced to you Poly Ferric Sulfate – a coagulant chemical in water treatment. However, as compared above, PAC is currently a popular water treatment chemical widely used in Vietnam. If you need to buy and use it, you can immediately contact Dong A Chemical via hotline 082 525. 525 for advice and quotes.
Giáo sư Nguyễn Lân Dũng là nhà khoa học hàng đầu Việt Nam trong lĩnh vực vi sinh vật học (wiki), với hơn nửa thế kỷ cống hiến cho giáo dục và nghiên cứu. Ông là con trai Nhà giáo Nhân dân Nguyễn Lân, thuộc gia đình nổi tiếng hiếu học. Giáo sư giữ nhiều vai trò quan trọng như Chủ tịch Hội các ngành Sinh học Việt Nam, Đại biểu Quốc hội và đã được phong tặng danh hiệu Nhà giáo Nhân dân năm 2010.
Sáng trưng hay sáng chưng mới đúng là điều nhiều người vẫn chưa thể phân…
Tại Việt Nam, ngành sản xuất giấy ngày càng phát triển cùng với lượng nước…
Trông chờ hay chông chờ đúng chính tả vẫn là phân vân của nhiều người…
Ao nuôi tôm bằng bạt là mô hình được áp dụng phổ biến ở Việt…
Giãy dụa hay giãy giụa đúng chính tả tưởng chừng đây là một câu hỏi…
Nước máy, nước sạch đang dần thay thế cho nước giếng khoan trên mọi vùng…
This website uses cookies.