|
SP Cont. |
S ≥ |
FE ≥ |
SI ≤ |
AS ≤ |
CU ≤ |
ZN ≤ |
PB ≤ |
H2O ≤ |
SIZE ≥ |
|
S45 |
45% |
40% |
4.0% |
0.01% |
0.01% |
0.5% |
0.15% |
2.0% |
90% |
|
SIZE |
3-15mm or other size |
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|
PKG |
1000kg/bag or bulk |
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Application and Function of 3-15mm Iron Pyrite in Wastewater Treatment
Main Application Scenarios
1. Deep Denitrification and Dephosphorization for Low C/N Wastewater
Used as filler in sulfur autotrophic denitrification filters for tail water from municipal wastewater treatment plants, rural domestic sewage, aquaculture wastewater, etc., to achieve deep denitrification without external carbon sources and simultaneous dephosphorization.
2. Acid Mine Drainage (AMD) and Heavy Metal Wastewater Treatment
Applied to acid mine drainage, electroplating/metallurgical wastewater to neutralize acidity, precipitate heavy metals, and efficiently remove Cu, Pb, Cd, Cr, etc.
3. Matrix for Constructed Wetlands / Ecological Treatment
Used as constructed wetland filler for decentralized rural sewage, black and odorous water bodies, and micro-polluted water sources, realizing synergistic purification via adsorption and biological denitrification.
4. Industrial Wastewater Pretreatment and Enhanced Processes
Used for pretreatment dephosphorization and decolorization of printing and dyeing, chemical wastewater, etc., or combined with iron-carbon and zero-valent iron to improve system stability and treatment efficiency.
Core Functions (Mechanisms)
1. Deep Denitrification
Acts as an electron donor for sulfur autotrophic denitrification, reducing nitrate to nitrogen gas without external carbon sources.
2. Deep Dephosphorization
Dissolved iron ions form precipitates with phosphate, and iron oxides also remove phosphorus via adsorption.
3. Heavy Metal Removal
Releases S²⁻ to form insoluble sulfide precipitates with heavy metals, enhanced by coprecipitation with iron oxides.
4. Acid Neutralization
Oxidation/hydrolysis products buffer pH, reducing alkali dosing costs for acidic wastewater.
5. Carrier and Synergistic Purification
Serves as a biofilm carrier to increase microbial biomass and improve the system's shock resistance.
Yunfu Pyrite Mine boasts large ore reserves and output, high grade, low impurities, stable quality and guaranteed delivery time.
