In sewage treatment, denitrification and phosphorus removal is an important link, which can effectively reduce the nitrogen and phosphorus content in sewage and improve the efficiency and water quality of sewage treatment.
1. Chemical phosphorus removal method
Chemical phosphorus removal method is to precipitate the phosphorus ions in sewage by adding chemical agents, so as to achieve the purpose of phosphorus removal. Commonly used chemical agents include polyferric sulfate, aluminum hydroxide and polyaluminum chloride. This method has the characteristics of high phosphorus removal efficiency, simple operation and stable treatment effect, but it is expensive and has a great impact on the environment, so it needs to be carefully considered when using it.
2. Biological denitrification and phosphorus removal method
Biological denitrification and phosphorus removal method is a method of achieving wastewater denitrification and phosphorus removal by microbial absorption, transformation, oxidation and other metabolic processes of nitrogen and phosphorus in sewage. Common biological denitrification and phosphorus removal methods include AO method, UASB method, Anammox method, etc. This method has the advantages of low cost and stable treatment effect, but it is difficult to operate and needs to ensure control conditions, otherwise it may cause pollution.
3. Waterweed filter method
The waterweed filter method uses waterweed collected from aquatic plants such as natural lakes and swamps as a carrier, places the waterweed in the filter, and then introduces sewage into the filter. Under the action of waterweed, organic matter such as nitrogen and phosphorus in the sewage is absorbed, decomposed, and converted into organic nutrients required for the production of aquatic plants, thereby achieving nitrogen and phosphorus removal. This method has the characteristics of low cost and small impact on the environment, but the treatment effect is relatively slow and requires a large treatment area.
4. Chemical denitrification method
The chemical denitrification method uses chemical agents to convert nitrogen ions in sewage into gaseous nitrogen, thereby achieving the purpose of denitrification. Commonly used chemical agents include aminophosphorus, basic aluminum sulfate, etc. This method has the advantages of thorough nitrogen removal and high treatment efficiency, but the operation is relatively complicated, and the selection of agents and the amount of agents required for precise control, otherwise it may affect the treatment effect.
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Shandong Longantai Environmental Protection Sci-tech Co., Ltd., established in 2005, focuses on energy-saving and compliant treatment of industrial wastewater, wastewater recycling and reuse, and wastewater resource and energy recovery. The company provides high-value comprehensive solutions and key equipment. It integrates research and development, manufacturing, process design, project construction, and water services operation. Longantai has strong capabilities and a complete quality system in the R&D and manufacturing of water treatment catalysts, critical water treatment equipment, wastewater resource recovery equipment, and industrial energy recovery equipment.
Longantai company provides high-value-added comprehensive energy-saving and emission reduction solutions in major technological and engineering applications such as industrial wastewater, refractory wastewater, high-salinity wastewater, high-concentration wastewater treatment, energy-saving upgrades for wastewater treatment standards, wastewater recycling and reuse, and water quality improvement for rivers and lakes. These solutions effectively improve resource utilization, reduce enterprise costs, and contribute positively to green, low-carbon, and high-quality development.
Longantai places great emphasis on the role of research and development in its growth. The company currently holds over 50 invention patents, more than 10 utility model patents, 1 design patent, 1 first prize for provincial-level scientific and technological progress, and 1 first prize for scientific and technological progress from the China Environmental Protection Industry Association. Longantai has established industry-academia-research collaborations with several top domestic and international universities and research institutions. Over the years, the company has been recognized with numerous honors, including National High-Tech Enterprise, National "Little Giant" Enterprise for Specialized and New Technology, Provincial Gazelle Enterprise, Provincial Specialized and New Technology Enterprise, Provincial Manufacturing Champion, Provincial Innovative Small and Medium-Sized Enterprise, Hidden Champion Enterprise, Provincial "One Enterprise, One Technology" R&D Center, and Provincial Industrial Design Center.
Longantai is a leading domestic provider of water treatment solutions, a manufacturer of critical water treatment equipment, and a water services operator. The projects it has served have received extensive coverage from numerous mainstream media outlets, including China Environment News, Xinhua News, Phoenix News, Sina, and various provincial TV stations.
Longantai is a collaborative and open platform with a comprehensive innovation system, mature practical technologies, and advanced manufacturing expertise. It brings together a team of passionate, responsible, grateful, and ambitious professionals. As Longantai continues to grow, it is eager to collaborate sincerely with partners worldwide, working together to contribute to the protection of the environment and the pursuit of sustainable development for humanity. With the mission of "developing energy-efficient and resource-sustainable environmental technologies and equipment for our customers," Longantai strives to fulfill its dreams and responsibilities with gratitude. With humility and dedication, the company aims to work alongside friends from all sectors to safeguard our clear waters, blue skies, and peaceful, harmonious homeland.
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