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Home > Our News > Product Information > 5 Common Ammonia Nitrogen Removal Agents Compared
With increasingly stringent environmental regulations, ammonia nitrogen removal from wastewater has become a critical challenge in water treatment. As the core chemical treatment agents, the proper selection and use of ammonia nitrogen removal agents directly impact treatment effectiveness and costs. This article systematically explains the working mechanisms, main types, and key application considerations of these agents in various scenarios.
→Hazards of Ammonia Nitrogen
Causes water eutrophication
Toxic to aquatic organisms
Increases difficulty and cost of subsequent treatment
→Removal Principles
√ Chemical Precipitation: Forms insoluble precipitates
√ Oxidation Decomposition: Converts ammonia nitrogen to nitrogen gas
√ Ion Exchange: Uses special resin adsorption
√ Biological Transformation: Assists biological treatment processes
→Key Performance Indicators
√ Removal efficiency (typically >95%)
√ Reaction speed (5-30 minutes)
√ Sludge production
√ Risk of secondary pollution
| Type | Representative Components | pH Range | Removal Rate | Advantages | Disadvantages |
|---|---|---|---|---|---|
| Chlorine-Based | NaClO, ClO₂ | 6-9 | 90-98% | Fast reaction, low cost | Produces chloramine byproducts |
| Persulfate-Based | K₂S₂O₈ | 3-11 | 85-95% | Wide adaptability, no residue | Requires catalysts |
| Magnesium Salt Composite | MgCl₂+Na₂HPO₄ | 8-10 | 95-99% | Low sludge, recyclable | Higher cost |
| Bio-Enhanced | Nitrifying bacteria | 6-8 | 70-90% | Environmentally friendly | Slow effect |
| Molecular Sieve | Zeolite materials | 4-10 | 80-92% | Regenerable | Small treatment capacity |
→Municipal Wastewater Treatment
√ Recommended Agents: Chlorine-based + bio-enhanced combination
√ Typical Parameters: Dosage 50-100mg/L
√ Precautions: Control residual chlorine <0.5mg/L
→Electroplating Industry Wastewater
√ Preferred Solution: Persulfate oxidation system
√ Special Requirements: Needs heavy metal capturing agents
√ Case Data: Reduces ammonia nitrogen from 150mg/L to 5mg/L
→ Livestock Wastewater Treatment
√ Best Choice: Magnesium salt composite precipitant
√ Process Key: Adjust pH to ~9
√ Cost-Effectiveness: ~$0.3-0.45 per ton
→Landfill Leachate
√ Solution: Molecular sieve pretreatment + advanced oxidation
√ Technical Challenge: Treats high-concentration ammonia nitrogen (>1000mg/L)
√ Innovative Approach: Catalytic oxidation technology
→Best Practices
√ Lab Testing First: Conduct jar tests
√ Staged Dosing: Better results with 2-3 separate doses
√ Parameter Monitoring: Real-time ORP and pH monitoring
→Troubleshooting
√ Issue 1: Sudden efficiency drop
-Possible Causes: Water quality change or agent failure
-Solution: Retest to determine new dosage
√ Issue 2: Excessive foam
-Solution: Add defoamer or reduce mixing intensity
→Safety Precautions
√ Wear protective equipment
√ Avoid mixing with acids
√ Store in cool, dry place
√ Green Formulations: Eco-friendly agent development
√ Smart Dosing: AI-based automatic control systems
√ Resource Recovery: Nitrogen/phosphorus recovery from wastewater
√ Hybrid Technologies: Physicochemical-biological combined processes
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