Advanced anaerobic ammonium oxidation process for high ammonia, low carbon wastewater treatment, significantly reducing energy consumption and sludge production, compliant with ASTM standards.
Anaerobic Ammonium Oxidation High-Efficiency Denitrification (Anammox) is an innovative biological nitrogen removal technology based on autotrophic microorganisms, designed to achieve efficient nitrogen removal under anaerobic conditions. This process is driven by Anaerobic Ammonium-Oxidizing Bacteria (AnAOB), primarily from the red bacteria genus, which directly convert ammonium (NH₄⁺) and nitrite (NO₂⁻) into nitrogen gas (N₂) without oxygen, eliminating the need for external carbon sources or full oxidation to nitrate. Recognized as one of the most promising technologies in wastewater treatment, Anammox is particularly suited for high ammonia, low carbon-to-nitrogen ratio wastewater scenarios such as fermentation wastewater, landfill leachate, and sludge digestate. By leveraging natural microbial metabolic pathways and advanced process optimization, it achieves unparalleled economic and environmental benefits compared to traditional nitrification-denitrification methods. This technology not only reduces greenhouse gas emissions (e.g., N₂O) but also minimizes residual sludge production, offering a sustainable solution for wastewater treatment that has gained widespread attention in both environmental engineering and academic research.
The Anaerobic Ammonium Oxidation High-Efficiency Denitrification Solution is a cutting-edge technology tailored for the modern wastewater treatment industry, specifically designed to address high ammonia and low carbon-to-nitrogen ratio wastewater with efficiency, cost-effectiveness, and environmental sustainability. This process relies on autotrophic AnAOB (Anaerobic Ammonium-Oxidizing Bacteria) from the red bacteria genus to biologically remove nitrogen by converting ammonium and nitrite into nitrogen gas under anaerobic conditions, eliminating the need for external carbon sources. The fully autotrophic nature of the process avoids the dependency on organic carbon typical of traditional nitrification-denitrification methods, substantially reducing operational costs and minimizing residual sludge production. It is ideal for a wide range of industrial wastewater types, including fermentation wastewater (e.g., corn starch, soy protein, MSG, alcohol, yeast production), landfill leachate, pharmaceutical wastewater, ammonia synthesis wastewater, photovoltaic industry wastewater, kitchen biogas slurry, livestock wastewater, rare earth processing wastewater, and sludge digestate, among others.
This solution is engineered for practical engineering applications, incorporating advanced components such as high-efficiency Anammox granular sludge, specialized growth promoters, and a comprehensive process package. The granular sludge, optimized through ecological niche regulation systems, achieves a red bacteria abundance of 24%, ensuring high total nitrogen removal rates and resilience to COD (Chemical Oxygen Demand) shocks. The growth promoters, enriched with trace elements (e.g., iron, magnesium) and vitamins, enhance AnAOB activity, accelerate system startup, and can be customized for specific wastewater characteristics across different industries. The core process package consolidates operational insights from real-world projects, providing detailed implementation guidelines for constructing or retrofitting Anammox process units, ensuring stability and efficiency. Product properties include a TSS (Total Suspended Solids) concentration of 18-20 g/L, a volatile solids ratio (V/T) above 85%, a particle size of 2-3 mm, a settling velocity of 75 m/h, and a nitrogen removal rate of 0.5 kgN/(kgVSS*d), demonstrating its superior performance in real-world applications.
Implementing this process not only meets stringent environmental discharge standards but also delivers substantial economic benefits to enterprises. By reducing aeration energy consumption, optimizing resource utilization, and lowering sludge disposal costs, the Anammox process provides a pathway to sustainable development in wastewater treatment. Particularly for high ammonia wastewater, its rapid nitrogen removal rate and adaptable process design make it an ideal replacement for conventional methods. Our solution has been validated in multiple real-world projects, successfully treating wastewater volumes ranging from 80 m³/d to several thousand tons per day, demonstrating stability and reliability under diverse water quality conditions. Whether for new wastewater treatment facilities or upgrades to existing systems, this process offers tailored technical support to ensure compliance with local regulations and long-term operational stability.
| Parameter | Value |
|---|---|
| Red Bacteria Abundance | 24% |
| Total Suspended Solids (TSS) | 18-20 g/L |
| Volatile Solids to Total Solids Ratio (V/T) | >85% |
| Particle Size | 2-3 mm |
| Settling Velocity | 75 m/h |
| Nitrogen Removal Rate | 0.5 kgN/(kgVSS*d) |
| Optimal pH Range | 7.5-8.0 |
| Optimal Temperature Range | 30-35°C |
| Hydraulic Retention Time (HRT) | 12-24 hours (adjustable) |
| Initial Nitrogen Load | 0.1-0.2 kgN/m³·d (startup phase) |
| Maximum Nitrogen Load | 0.5 kgN/m³·d (stable operation) |
| Total Nitrogen Removal Efficiency | >90% |
| COD Tolerance | Up to 500 mg/L (with adaptation) |
| Energy Consumption Reduction | Approximately 60% compared to conventional processes |
| Sludge Production Reduction | Approximately 80% compared to conventional processes |
| Greenhouse Gas Emission Reduction | Significant reduction in N₂O emissions |
The Anaerobic Ammonium Oxidation High-Efficiency Denitrification Process utilizes advanced Partial Nitrification-Anammox (PN/Anammox) technology to achieve efficient nitrogen removal. The process leverages AnAOB (Anaerobic Ammonium-Oxidizing Bacteria) from the red bacteria genus to directly convert ammonium (NH₄⁺) and nitrite (NO₂⁻) into nitrogen gas (N₂) under anaerobic conditions, bypassing the nitrate (NO₃⁻) formation typical in traditional processes, thus shortening the reaction pathway and enhancing efficiency.
The process starts with partial nitrification, where a portion of ammonium is oxidized to nitrite, followed by the Anammox reaction in a reactor optimized for hydraulic retention time (HRT). Hydraulic circulation and ecological niche regulation systems maintain a red bacteria abundance of 24%, ensuring total nitrogen removal rates exceed 90%, with resilience to COD shocks, making it ideal for complex wastewater compositions.
High-efficiency Anammox granular sludge is a cornerstone of this technology, cultivated through precise microbial community regulation. The sludge maintains a TSS concentration of 18-20 g/L, a volatile solids ratio (V/T) above 85%, a particle size of 2-3 mm, a settling velocity of 75 m/h, and a nitrogen removal rate of 0.5 kgN/(kgVSS*d).
Specialized growth promoters, enriched with trace elements (e.g., iron, magnesium) and vitamins, are used to accelerate system startup and enhance microbial activity. These promoters can be tailored to specific wastewater types (e.g., fermentation wastewater, landfill leachate), reducing startup time to 4-6 weeks.
The core process package integrates years of engineering experience, offering reactor design, operational parameter optimization (e.g., pH 7.5-8.0, temperature 30-35°C), and troubleshooting guidelines. This ensures stability in both new constructions and retrofitting projects, reducing energy consumption by approximately 60% and sludge production by about 80%, while significantly lowering greenhouse gas emissions (e.g., N₂O).
This case study focuses on Jiangsu Suzhou Energy-Saving Equipment Co., Ltd., which handles DMF (Dimethylformamide)-containing wastewater, a highly toxic organic compound, with a treatment capacity of 80 m³/d. Initially, the company faced challenges with excessive total nitrogen levels due to DMF’s biological toxicity, which disrupted the establishment of a stable nitrifying microbial community in their conventional biochemical system.
The treatment process implemented included a sequence of:
1) Introducing Qinggang® high-efficiency microbial agents, which feature short acclimation time (approximately 10-15 days) and strong pollutant removal capability (total nitrogen removal rate increased to over 95%), rapidly restoring the nitrifying microbial community and enhancing system resilience;
2) Conducting a comprehensive review of the existing wastewater system, optimizing parameters such as HRT and DO (Dissolved Oxygen), and providing a two-week theoretical and practical training program for on-site operators to ensure long-term process stability.
The results were remarkable: after introducing our specialized high-efficiency microbial agents, the biochemical system was fine-tuned over 25 days, achieving an effluent total nitrogen concentration consistently below the discharge standard (<15 mg/L), fully complying with China's National Class A discharge requirements.
A key highlight of this project is the significant challenge posed by DMF wastewater's biological toxicity, which typically disrupts microbial communities. Our targeted DMF emergency repair products and process strategies effectively mitigated toxicity shocks, enhancing the system's resilience. The project achieved an energy consumption reduction of approximately 50% and a sludge production decrease of about 70%, yielding significant cost savings. Long-term monitoring confirmed high stability with no secondary pollution, ensuring uninterrupted production.
Contact us to explore how granular sludge can transform your wastewater treatment operations.
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