Water Treatment Grade Ferrous Sulfate Heptahydrate

Zibo Dingqi Chemicals Co., Ltd. is one of the most experienced manufacturers and suppliers of water treatment grade ferrous sulfate heptahydrate in China. Welcome to wholesale high quality water treatment grade ferrous sulfate heptahydrate made in China here from our factory. For price consultation, contact us.

Ferrous sulfate heptahydrate is an iron(II) salt supplied in a crystalline solid form, typically presenting as blue-green crystals. In water treatment operations, it introduces soluble ferrous ions (Fe2+) that react with targeted contaminants to facilitate precipitation and separation under controlled conditions.

Controlled Crystal Morphology: Produced via precision cooling crystallization to maintain uniform particle distribution, reducing clumping tendencies and accelerating dissolution rates in automatic liquid preparation systems.

Low Heavy Metal Profile: Strictly controlled raw material selection and purification procedures minimize trace heavy metal residues, ensuring compliance with strict environmental discharge standards for municipal wastewater effluents.

Oxidation Resistance & Stability Management: Enhanced packaging barriers and optimal residual moisture control prevent premature surface oxidation from blue-green crystals to brownish ferric compounds during storage.

Consistent Batch Reproducibility: Automated processing controls across crystallization, centrifugation, and drying stages guarantee stable active ingredient percentages and predictable phosphate removal performance across large-scale commercial shipments.

Phosphorus Removal

Mechanism: Deployed in wastewater treatment facilities to precipitate dissolved phosphates into insoluble iron-phosphate compounds. Ferrous ions react with phosphate species under specific pH ranges to form stable precipitates for clarification.

Evaluation Metrics: Initial phosphate concentration, target effluent limits, reaction pH, iron-to-phosphorus molar ratios, and sludge settling characteristics. Laboratory jar testing is advised to verify optimal dosing rates.

Coagulation and Flocculation

Performance Variables: Functions within selected coagulation systems to destabilize suspended solids and organic colloids. Performance depends on water matrix composition, alkalinity, oxidation-reduction potential, and compatibility with primary coagulants or polymeric flocculants.

Industrial Wastewater Treatment

Application Scope: Applied in specialized industrial effluent treatment streams requiring iron-based chemical reduction or heavy metal precipitation, depending on specific waste stream chemistry and local discharge compliance standards.

Production involves raw material dissolution and purification, controlled crystallization, centrifugal separation, and precision drying to maintain consistent crystal structure and minimize moisture variation.

Quality Verification Parameters

Assay Verification: Quantification of FeSO4·7H2O and active Fe2+ content.

Impurity Control: Monitoring of insoluble matter and regulated heavy metal limits.

Batch Traceability: Every production lot is tested and verified against strict manufacturing standards, accompanied by a batch-specific Certificate of Analysis (COA).

Regulatory Documentation Access: Full alignment with international chemical handling standards, providing readily accessible material safety disclosures, handling guidance, and standardized transportation classifications.

Dosing System Compatibility: Fully compatible with standard carbon steel, stainless steel, or HDPE and PVC storage and feeding infrastructure when operated within recommended concentration thresholds.

Effluent pH Management Integration: Because ferrous iron hydrolysis consumes alkalinity, system design notes outline the necessity of auxiliary lime or caustic soda dosing to maintain optimal coagulation pH ranges (pH 7.0 to 8.5) for effective precipitation.

Standard Packaging: Moisture-resistant woven bags with inner liners, bulk bags, or customized palletized configurations designed to prevent caking.

Storage Requirements: Store in a cool, dry, well-ventilated area away from incompatible materials. Proper packaging integrity must be maintained to prevent atmospheric oxidation and moisture exposure.

Handling Precautions: Use appropriate personal protective equipment (PPE) as outlined in the Safety Data Sheet (SDS).

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