Ferrous Sulfate Heptahydrate Iron(II) Sulfate for Water Treatment Coagulant Iron

Product Specification

Product Title

Ferrous Sulfate Heptahydrate - Water Treatment Coagulant, Iron Supplement & Soil Amendment

English Description

Ferrous sulfate, commonly known as copperas or green vitriol, typically exists as the heptahydrate (FeSO₄·7H₂O), appearing as bluish-green crystals. This product is a versatile ferrous salt that plays significant roles in water treatment, agriculture, feed additives, chemical synthesis, and environmental protection, leveraging its properties as a reducing agent, coagulant, and source of iron. It is a cost-effective and readily available basic chemical, offering both economic and environmental benefits.

In-Depth Analysis of Core Applications:

1. The Dual-Purpose Agent in Water Treatment:

   • Coagulation and Phosphorus Removal: In water and wastewater treatment, ferrous sulfate acts as an inorganic coagulant. The ferrous hydroxide colloids produced during its hydrolysis effectively remove suspended solids, colloids, and phosphates from water through charge neutralization, adsorption bridging, and sweep coagulation. Its phosphorus removal effect is particularly notable, making it widely used in chemical phosphorus removal processes at municipal wastewater treatment plants to prevent water eutrophication.

   • Reduction and Decolorization: Utilizing its reducing properties, it can treat chromium(VI)-containing wastewater, reducing the highly toxic hexavalent chromium to the less toxic trivalent form for subsequent precipitation removal. It can also be used for partial decolorization of dyeing wastewater.

2. The Nutritionist for Agriculture and Soil Remediation:

   • Iron Fertilizer: Ferrous sulfate is the most common and economical iron source for preventing and treating iron chlorosis in plants. For acid-loving flowers (e.g., gardenias, azaleas), fruit trees (e.g., citrus), and field crops, applying it via soil incorporation, foliar spray, or root drench supplies absorbable ferrous ions, quickly correcting yellowing and restoring chlorophyll synthesis.

   • Soil Amendment: For alkaline or calcareous soils, applying ferrous sulfate can locally lower soil pH, increase iron availability, and improve soil structure.

3. The Trace Element Additive in Feed and Food Industries:

   • As a feed-grade mineral additive, it provides essential iron for livestock and poultry, preventing anemia and promoting growth.

   • Food-grade ferrous sulfate (must comply with relevant standards like GB 29211) can be used as a nutritional fortifier (iron fortifier) in products like flour and cereal preparations.

4. The Basic Raw Material in Chemical and Industrial Manufacturing:

   • It is an important starting material for manufacturing other iron-based products such as iron oxide red/black pigments, polymeric ferric sulfate, and precursors for lithium iron phosphate (LFP) cathode materials.

   • In Fenton's Advanced Oxidation Process, it serves as the ferrous ion source, combining with hydrogen peroxide (H₂O₂) to generate highly oxidizing hydroxyl radicals for degrading recalcitrant organic wastewater.

   • Used in wood preservation and conditioning sewage sludge.

This product is categorized into Industrial Grade, Agricultural Grade, Feed Grade, and Food Grade based on its intended use. We strictly control product quality to ensure impurities like heavy metals meet respective standards. Industrial and Agricultural Grade products feature high purity, good water solubility, and strong reactivity. Feed and Food Grade products additionally comply with hygiene and safety regulations. We supply 25kg bags and offer custom packaging with stable inventory, providing reliable product supply and technical support to water treatment companies, fertilizer/feed manufacturers, chemical plants, and environmental engineering contractors.