According to statistics, more than 70% of municipal wastewater in China exhibits the characteristic of low carbon to nitrogen ratio. With the improvement of environmental standards and the national "dual carbon" background, anaerobic ammonia oxidation technology has become a hot research topic in the environmental protection community. However, there are still a series of bottleneck problems in the practical application of this technology. Mainly reflected in the difficulty in obtaining stable nitrite nitrogen, ineffective control of dissolved oxygen, and the impact of external factors such as organic matter on the system, anaerobic ammonia oxidation technology cannot operate stably.

Traditional denitrification process

New Technology Research

We have found the correct breakthrough and solution to the technical bottleneck problem, and ultimately formed a new process system for the degradation of pollutants throughout the entire process. The core of our low-carbon and efficient denitrification new process lies in the cyclic anaerobic ammonia oxidation bioreactor. This system is equipped with three core technologies, achieving multiple technological breakthroughs such as effective acquisition of anaerobic ammonia oxidation reaction substrate, repeated carbon and nitrogen cycling metabolism, and full process intelligent regulation.

1、 The principle of new technology anaerobic ammonia oxidation process.

2、 The core of the low-carbon and efficient denitrification new process lies in the circulating anaerobic ammonia oxidation bioreactor, which is equipped with three core technologies.

2.1. Core Technology 1: Stable acquisition of nitrite nitrogen in anaerobic ammonia oxidation reaction substrate;

Under the collaboration of new technology and AI, DO achieves real-time control, freezes at the most suitable value, continuously and stably creates an environment for the formation of nitrite nitrogen, and provides a stable reaction substrate for anaerobic ammonia oxidizing bacteria to obtain nitrite nitrogen.

2.2. Core Technology 2: Functional Microbial Abundance Screening and High Enrichment;

Repeated internal circulation can significantly increase denitrification and organic matter removal rates, increase the abundance of anaerobic ammonia oxidizing bacteria, and ensure stable total nitrogen compliance.

2.3. Core Technology Three: Supported by AI and Artificial Intelligence.

Supported by AI artificial intelligence, it efficiently, scientifically, and in real-time analyzes and accurately calculates the oxygen demand, sludge reflux rate, internal circulation rate, etc. for stable acquisition of nitrite nitrogen, achieving targeted and reasonable regulation.

2.4 Summary

Through the collaboration of new processes and AI, the dissolved oxygen concentration has been effectively controlled in real time, and by suppressing the forward reaction of this chemical reaction, the stable reaction substrate nitrite nitrogen has been continuously obtained for anaerobic ammonia oxidizing bacteria. Effective screening and high enrichment of functional microbial communities have been achieved. The cycle metabolism of organic matter in the new process utilizes CO2 as an inorganic carbon source, reducing greenhouse gas emissions and the addition of organic carbon sources. The local denitrification of nitrate nitrogen cycle ensures that total nitrogen meets the standard. With the support of AI artificial intelligence, the new process achieves targeted and reasonable regulation throughout the entire process.

3、 Analysis and comparison of progressiveness

Our new process technology is more advanced, stable, energy-saving, and intelligent compared to traditional process technology, and can achieve low cost, high standards, and stable compliance.

4、 Process application display

Our technology has had successful cases. The influent carbon to nitrogen ratio of these cases is all below 3, which belongs to the typical low carbon to nitrogen ratio municipal sewage. The effluent quality of these cases is stable and reaches Class IV surface water, and the operation and maintenance costs are also significantly reduced.

4.1 Demonstration Project in Qingyang City, Gansu Province

Project Name: Qingqiao Interception and Domestic Sewage Treatment Project in Changqing, Qingyang, Gansu Province

Project address: Changqingqiao Town, Qingyang City, Gansu Province

Water quantity and quality: 500 tons/day, meeting the requirements of Class IV surface water standards

Inflow C/N=2.2

Water quality test report for effluent: COD concentration: 21mg/L, ammonia nitrogen concentration: 1.35mg/L, total nitrogen concentration: 5.25mg/L

4.2 Liaoning Tieling Demonstration Project

Project Name: Intelligent Ecological Sewage Treatment Project in Liqianhu Town, Tieling County, Liaoyang

Project address: Liqianhu Town, Tieling County, Liaoning Province

Water quantity and quality: 100 tons/day, meeting the requirements of Class IV surface water standards

Inflow C/N=2.5

Water quality test report for effluent: COD concentration: 24mg/L, ammonia nitrogen concentration: 0.059mg/L, total nitrogen concentration: 5.63mg/L

4.3 Demonstration Project in Liaoyang City, Liaoning Province

Project Name: Liaoyang Hongwei District Rural Economic Bureau Integrated Processing Equipment Project

Project address: Hongwei District, Liaoyang City

Water quantity and quality: 2500 tons/day, meeting the requirements of Class IV surface water standards (excluding total nitrogen values)

Inflow C/N=2.7

Water quality test report for effluent: COD: 21mg/L, ammonia nitrogen: 1.474mg/L, total nitrogen: 7.55mg/L