A 10% reduction in ammonia nitrogen emissions

Sinochem New Network News today, ammonia nitrogen content has exceeded the chemical oxygen demand, has become the primary indicator of the impact of surface water and water quality, but also become the focus of the work of the oil and chemical industry emissions reduction and difficult. In the “Twelfth Five-Year Plan”, the state clearly puts forward the goal of reducing ammonia nitrogen by 10%, and it is included in the assessment system as a binding indicator. Therefore, the development and promotion of economical and efficient ammonia removal technology is imminent.

In the past, there were many methods for removing ammonia and nitrogen from wastewater used in the industry, but they have been deficient so far. For example, biological nitrogen removal can remove many kinds of nitrogen compounds. The treatment effect is stable, no secondary pollution occurs, and it is economical, but it has a large area and low-temperature efficiency. Low, vulnerable to toxic substances, troublesome operation and management; Ammonia stripping, stripping process is simple, treatment effect is stable, infrastructure and operating costs are low, but it is easy to generate difficult-to-dispose scale, effluent is also difficult to achieve compliance; The chemical method is not influenced by the water temperature, and it is easy to operate and saves investment. However, the operation cost for high-concentration ammonia nitrogen wastewater treatment is high; the ion exchange method has similar problems. The results reported today are expected to become a powerful tool for ammonia reduction. The combination of gas-water separation membrane technology and traditional technology avoids problems such as fouling and high energy consumption. It will become an important technical support for the reduction of ammonia nitrogen wastewater in the chemical industry, and help ammonia, wastewater, petrochemical, pharmaceutical, and other ammonia-nitrogen wastewater discharge, and complete the country. The 10% ammonia nitrogen emission reduction target proposed in the “Twelfth Five-year Plan”.

At present, the total amount of ammonia nitrogen discharged into water bodies in the country is around 1.5 million tons, and the processing technology devices have a market of more than 10 billion yuan each year. Once this new result is promoted, it will undoubtedly bring about huge economic and social benefits.