Overview
COD and Total Nitrogen Remover is a high-efficiency water treatment chemical designed to address two critical wastewater parameters simultaneously. It combines advanced oxidation technologies with nitrogen-selective reactants to achieve comprehensive pollutant removal. The product is particularly effective for industries facing strict discharge limits, as it can reduce COD by 70-90% and total nitrogen by 50-80% within short reaction times. Developed to meet increasing environmental regulations, these removers often contain catalytic components like modified persulfates or nano-catalysts that enhance reaction kinetics. Unlike biological treatments, they perform reliably under shock loads and toxic conditions, making them indispensable for industries with fluctuating wastewater characteristics.
Physical and Chemical Properties
The remover typically exhibits strong oxidizing properties with redox potentials exceeding +2.0V, enabling breakdown of complex organic molecules. Its nitrogen removal mechanism may involve chemical reduction to N₂ gas or adsorption/precipitation, depending on the formulation. Most commercial products maintain activity across a wide temperature range (5-40°C). Key chemical characteristics include controlled release of active oxygen species and selective reactivity with nitrogenous compounds. The optimized particle size (usually 50-200 mesh for powders) ensures rapid dissolution without clogging dosing systems. Some advanced formulations incorporate pH buffers to minimize additional chemical consumption during application.
Main Applications
Primary applications include textile dyeing wastewater treatment, where it degrades azo dyes and hydrolyzed polyacrylamide residues. In food processing plants, it effectively removes proteins and lipids contributing to COD while controlling ammonia from organic decomposition. Municipal wastewater plants use it as an emergency solution for peak load management. The pharmaceutical industry employs specialized variants to break down antibiotic residues and nitrogen-rich intermediates. Recent applications extend to landfill leachate treatment and aquaculture water recycling systems, where traditional biological methods often fail to meet standards.
Safety and Storage
As an oxidizing agent, the remover requires careful handling with nitrile gloves and protective goggles. Storage areas must be well-ventilated and separated from reducing agents or organic materials. Bulk powders should be stored in original moisture-proof packaging with desiccants to prevent caking. Spill management involves containment with inert absorbents like vermiculite, never combustible materials. Unlike chlorine-based products, most advanced removers don’t produce toxic disinfection byproducts, but treated water should still be tested for residual oxidants before discharge.
B2B Procurement Guide
Industrial buyers should prioritize suppliers with ISO 14001 certification and third-party performance test reports. Key evaluation metrics include active oxygen content (≥15% for powders), nitrogen removal efficiency per unit dosage, and sludge volume index. Request pilot testing with actual wastewater samples to verify compatibility. Consider logistics factors like minimum order quantities (typically 1-ton pallets) and regional availability. Some manufacturers offer technical support for dosage optimization and effluent monitoring. For large-scale purchases, negotiate pricing based on annual volume commitments with quality clauses for batch consistency.
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