Application of polymeric ferric sulfate in groundwater purification

Groundwater, as one of the important freshwater resources on Earth, directly affects human life and production activities in terms of water quality. However, due to various factors such as geological conditions and human activities, groundwater is often polluted to varying degrees, mainly including organic matter, heavy metals, microorganisms, and other pollutants. Effective purification technology is particularly important to ensure the safe use of groundwater. Polymerized Ferrous Sulfate (PFS), as a new, high-quality, and efficient iron salt inorganic polymer coagulant, has demonstrated excellent performance in groundwater purification.

Characteristics of groundwater
Groundwater mainly comes from atmospheric precipitation, infiltration of surface water bodies, and water release from rocks. Its characteristics include:
Stable water quality: Compared to surface water, groundwater is less affected by external pollution and has relatively stable water quality.
Low water temperature: Due to the fact that groundwater is located deep underground, the water temperature is usually low.
High hardness: Groundwater contains a large amount of minerals, especially calcium, magnesium, etc., resulting in high hardness.
Susceptible to pollution: Although the water quality is stable, once it is contaminated, it is difficult to control, and the pollution sources may come from surface water bodies, agricultural activities, industrial wastewater, etc.

Principle of purifying groundwater with polymeric ferric sulfate
Polymeric ferric sulfate, as an efficient inorganic polymer water treatment agent, has a complex and comprehensive water purification principle, mainly including the following aspects:
Oxidation effect: Polymeric ferric sulfate has strong oxidizing properties and can oxidize organic, inorganic, and microbial pollutants in water, converting them into insoluble precipitates or easily removable substances, reducing the content of pollutants in water.
Precipitation effect: The iron ions produced by the hydrolysis of polymeric ferric sulfate react chemically with various pollutants in water to form stable precipitates. These sediments, due to their higher density than water, will quickly settle to the bottom of the water, thereby achieving effective removal of pollutants.
Adsorption performance: Polymeric iron sulfate has a porous structure and surface activity, which can adsorb organic matter, heavy metal ions, and other pollutants in water, and fix them on the surface or inside of polymeric iron sulfate through physical and chemical reactions.
Flocculation and precipitation: Polymeric ferric sulfate can rapidly hydrolyze in water to form highly charged multinucleated complexes. These complexes aggregate colloidal particles and suspended solids in water into larger particles (i.e. flocs) through electrostatic attraction, bridging, and cross-linking. Due to the increase in volume and weight, flocs are more likely to precipitate under the action of gravity.
Removing heavy metals: Polyferric sulfate has excellent removal effects on heavy metal ions (such as lead, cadmium, chromium, copper, zinc, etc.) in water. By undergoing complexation or precipitation reactions with heavy metal ions, they are converted into stable compounds that are insoluble in water and separated from water through precipitation.

Advantages of using polymeric ferric sulfate to purify groundwater
Efficient purification: Polymeric ferric sulfate can remove various pollutants such as organic matter, heavy metals, and microorganisms in groundwater, with significant purification effects.
Safe and harmless: Polyferric sulfate does not contain harmful substances such as aluminum, chlorine, and heavy metal ions, and has no iron ion transfer in the aqueous phase, ensuring safe and harmless use.
Strong adaptability: Polymeric ferric sulfate can work stably in the pH range of 4-11, and performs best in the pH range of 6-9. The purification effect is significant for micro polluted, algae containing, and low-temperature low turbidity raw water, and it is also adept at treating high turbidity raw water.
Low cost: The dosage of polymeric ferric sulfate is relatively small, which can significantly reduce processing costs and save users up to 20% -50% of processing fees.
Multifunctionality: In addition to purifying groundwater, polymeric ferric sulfate can also be used in industrial wastewater treatment, municipal wastewater treatment, drinking water purification and other fields, with broad application prospects.
In summary, polymeric ferric sulfate plays an important role in ensuring the safe use of groundwater as an efficient, safe, and low-cost groundwater purifier. With the continuous advancement of technology and the expansion of application fields, polymeric ferric sulfate will play a more important role in future water resource protection.