I. Technical Overview
This technology integrates homogeneous chemical oxidation (Fenton method), heterogeneous chemical oxidation (H2O2/FeOOH), fluidized bed crystallization and FeOOH reduction and dissolution. The biochemical effluent chromaticity is 120-300 times, CODCr concentration is 300-800mg/L, and the effluent meets the COD and chromaticity requirements of "Water Quality for Industrial Water Use in Urban Wastewater Recycling" (GB/T19923-2005). The dosage is 20-30% less than that of conventional Fenton technology. The treatment cost is 3.50 yuan/m3.
II. Technical Advantages
(1) The core of this technology is the new FBR-Fenton technology that integrates homogeneous chemical oxidation, heterogeneous chemical oxidation, fluidized bed crystallization and FeOOH reduction and dissolution.
(2) Loading iron oxide as a heterogeneous reaction catalyst broadens the reaction acid-base range during the reaction process and reduces the amount of acid and base added; reduces the amount of iron salt added, reduces the operating cost and reduces the salinity of the effluent.
(3) The original fluidized bed system is replaced by the expanded state, which reduces the violent mutual friction between catalyst particles, reduces the dissolution of metal ions on the catalyst surface, and prolongs the catalyst life.
III. Scope of application
Deep treatment of wastewater in papermaking, chemical, pharmaceutical, fermentation, printing and dyeing industries.
IV. Basic principles
Fenton fluidized bed technology is a new technology that combines the functions of homogeneous chemical oxidation (Fenton method), heterogeneous chemical oxidation (H2O2/FeOOH), fluidized bed crystallization and reduction and dissolution of FeOOH.
Its reaction mechanism includes three parts:
(1) FeOOH dissolution and reduction: FeOOH forms a complex precursor with organic matter, and releases organic radicals and Fe2+ through electron transfer
(2) Formation of FeOOH: Fe2+ catalytically decomposes H2O2 to produce OH? and Fe3+, and Fe3+ crystallizes on the carrier surface to form FeOOH
(3) Degradation of organic matter: including heterogeneous catalytic and homogeneous catalytic oxidative degradation
V. Process flow
Industrial wastewater→pH adjustment→Fenton fluidized bed→pH adjustment→sedimentation tank→effluent
Application Areas
Printing and dyeing wastewater
Garbage leachate
Coal chemical wastewater
Emulsion wastewater
Pesticide wastewater
Pharmaceutical wastewater
Dye industry wastewater
CASE SHOW
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.
){kind=link}