Polymer Composite Gel Biocarriers Elevating Bioremediation Performance With Innovative Composite Technology

Introduction

Advanced Biofilm Carrier for Enhanced Nitrogen/Phosphorus Removal and Recalcitrant Pollutant Degradation

This innovative biofilm carrier is specifically engineered to address three critical wastewater treatment challenges: efficient nitrogen removal, enhanced phosphorus elimination, and degradation of persistent organic pollutants. The technology combines two breakthrough mechanisms

Hydrogel Sustained-Release System

Maintains optimal moisture and nutrient levels for microbial communities

1. Gradually releases iron ions to ensure long-term catalytic activity (5-7 years)
2. Protects functional microorganisms from harsh environmental fluctuations
3. Active Iron Ion Catalysis Technology
4. Iron ions interact with endogenous H₂O₂ (produced during microbial metabolism) to trigger Fenton-like reactions, generating hydroxyl radicals (·OH) that:
5. Oxidize refractory COD (85-92% removal efficiency)
6. Degrade antibiotics (e.g., sulfonamides, 80-90% removal)
7. Break down micro-pollutants (pharmaceuticals, pesticides)
8. Simultaneously functions as an electron mediator to:
9. Accelerate denitrification by 40-60% compared to conventional carriers
10. Promote chemical phosphorus fixation through iron-phosphate precipitation

Key Features & Technological Advantages

1. Superior Contaminant Removal

COD removal efficiency: 85-95%

Ammonia nitrogen removal: 90-98%

Heavy metal adsorption capacity: 15-30mg/g (Pb²⁺, Cd²⁺, Cu²⁺)

2. Exceptional Durability

pH resistance: 2-12 (withstands extreme industrial wastewater)

Operational lifespan: 5+ years (3X longer than conventional plastic media)

Compressive strength: ≥3.5MPa (resists mechanical wear)

Technical Parameters

Municipal sewage (e.g., Riyadh, Jeddah plants).

Industrial wastewater (oil refineries, textile dyeing).

Rural drainage & river remediation.

Case Example: A Saudi textile plant achieved 95% COD removal by replacing conventional carriers with PCG.

Target Applications

Industrial Wastewater Treatment

Pharmaceutical wastewater (antibiotics, hormones)

Chemical plant effluent (nitro-compounds, dyes)

Landfill leachate (high ammonia, refractory COD)

Electroplating wastewater (complex heavy metals)

Municipal & Specialized Treatment

Sewage plant upgrades (Class IV to Class I-A standards)

Aquaculture recirculation systems

Hospital wastewater disinfection

River/lake eutrophication control