October 17, 2025
Street Food
Yangzi Petrochemical Flue Gas Desulfurization Project Accepted Acceptance
In mid-October, the Jiangsu Provincial Department of Environmental Protection organized two important meetings: one for the acceptance of the flue gas desulfurization project at Yangzi Petrochemical Corporation's thermal power plant (units 5 to 9), and another for the environmental acceptance of the ammonia desulfurization demonstration project in Jiangsu Province. Following thorough discussions, the acceptance team officially confirmed that the flue gas desulfurization project had successfully passed the environmental protection inspection conducted by the Jiangsu Provincial Environmental Protection Bureau.
The desulfurization project utilizes the ammonia-based desulfurization technology developed by Jiangsu New Century Jiangnan Environmental Protection Co., Ltd. This advanced method is known for its low ammonia slip, high desulfurization efficiency, and a high oxidation rate of ammonium sulfite, which allows for the production of high-value ammonium sulfate. The technology not only meets the requirements of a circular economy but also represents a sustainable and environmentally friendly solution. As the largest ammonia desulfurization project currently operating in China, it has been recognized by Jiangsu Province as a key demonstration initiative, setting a benchmark for future similar projects across the country.
This successful implementation marks a significant step forward in the province’s efforts to reduce emissions and promote green energy technologies. It also highlights the growing role of innovative desulfurization methods in supporting both industrial development and environmental protection goals. With its proven effectiveness and economic benefits, the project is expected to serve as a model for other regions looking to adopt similar technologies in the future.
Cation Exchange Resin:
Anion Exchange Resin:
Applications of Water Treatment Resins:
1.Water Softening:
2.Deionization:
3.Demineralization:
4.Selective Ion Removal:
5.Maintenance and Regeneration
Water Treatment Resin are specialized materials used in water purification processes, particularly in ion exchange systems. These resins are typically composed of small, porous beads that can exchange ions with ions in the water that passes through them. There are two main types of ion exchange resins: cation exchange resins and anion exchange resins.
Types of ion exchange resin:
Cation Exchange Resin:
Strong Acid Cation (SAC) Resins: These resins contain sulfonic acid groups and are used to remove positively charged ions (cations) such as calcium (Ca²âº), magnesium (Mg²âº), and other heavy metals. SAC resins are commonly used in water softening applications.
Weak Acid Cation (WAC) Resins: These resins contain carboxylic acid groups and are effective at removing cations, particularly in applications where water has a high alkalinity.
Anion Exchange Resin:
Strong Base Anion (SBA) Resins: These resins contain quaternary ammonium groups and are used to remove negatively charged ions (anions) such as sulfate (SOâ‚„²â»), nitrate (NO₃â»), and chloride (Clâ»). SBA resins are often used in deionization processes.
Weak Base Anion (WBA) Resins: These resins contain tertiary amine groups and are effective at removing anions from solutions with lower pH levels.
Applications of Water Treatment Resins:
1.Water Softening:
Cation exchange resins are commonly used to replace calcium and magnesium ions in hard water with sodium or potassium ions, thus preventing scale buildup in pipes and appliances.
2.Deionization:
Both cation and anion exchange resins are used together in mixed bed or separate bed configurations to remove all ionic species from water, producing highly purified water. This is crucial in applications such as laboratory water, pharmaceuticals, and microelectronics manufacturing.
3.Demineralization:
This process involves using both types of resins to remove dissolved salts from water. It's used in boiler feedwater treatment and other industrial processes where mineral-free water is required.
4.Selective Ion Removal:
Specialized resins can be used to target specific contaminants, such as heavy metals, nitrates, or arsenic, from drinking water and wastewater.
5.Maintenance and Regeneration
Water treatment resins require periodic regeneration to restore their ion exchange capacity. Regeneration involves flushing the resin with a concentrated solution of the ions that the resin initially releases. For example:
SAC resins are regenerated with a salt (sodium chloride) solution.
SBA resins are regenerated with a caustic (sodium hydroxide) solution.
Regular maintenance and proper regeneration are essential to ensure the longevity and efficiency of the resins.
Conclusion
Water treatment resins are a critical component of many water purification systems, providing efficient removal of a variety of contaminants. Their effectiveness and versatility make them suitable for a wide range of applications, from residential water softening to industrial demineralization. Understanding the types and functions of these resins can help in selecting the right one for specific water treatment needs.
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