The Shenzhen Clear Science & Technology Co., Ltd (SINOKLE) has developed a comprehensive treatment process for landfill leachate, centered around the CDFU technology, to address the challenges of leachate treatment. This process integrates UASB anaerobic towers, AO tanks, MAB tanks, and SINOKLE's exclusive patented CDFU cyclonic dissolved gas flotation technology, along with a tail gas destructor, achieving efficient and environmentally friendly treatment of landfill leachate. 

This article will introduce the various components of the process and their synergistic effects, demonstrating its advanced and practical application in landfill leachate treatment.

① CDFU (Cyclonic Dissolved Gas Flotation Unit)

CDFU (Cyclonic Dissolved Gas Flotation Unit) is an exclusive patented technology from the SINOKLE. This technology uses the synergistic effect of centrifugal and dissolved gas flotation to efficiently remove suspended solids, and oils.

② Biochemical Treatment System: Upflow Anaerobic Sludge Bed (UASB) Anaerobic Tower

This is the first stage of the process, where organic matter in the leachate is converted into biogas through anaerobic digestion, thus reducing the organic load for subsequent treatment. The UASB tower is equipped with a three-phase separator, which effectively separates biogas, sludge, and treated liquid, ensuring treatment efficiency and stability. 

③ Biochemical Treatment System: AO (Anoxic/Oxic) Tank

After anaerobic treatment, the leachate enters the aerobic (Aerobic) tank, where organic matter is further degraded using the activated sludge process. The AO (Anoxic/Oxic) tank combines anoxic and aerobic environments to remove nitrogen through nitrification and denitrification, while also further reducing COD and BOD. 

④ MBR Filtration System: MAB Tank

The MAB tank (Moving Bed Biofilm Reactor) is a type of reactor that uses high surface-area biofilm carriers in the tank to increase microbial attachment area and improve biological treatment efficiency. The MAB tank effectively removes remaining organic matter and ammonia nitrogen, providing a solid foundation for further deep treatment.

⑤ CDOF (Cyclonic Dissolved Ozone Flotation Unit)

CDOF (Cyclonic Dissolved Ozone Flotation Unit) is another patented technology by SINOKLE that integrates multiple advanced technologies, including ozone catalytic oxidation, cyclonic flotation, and dissolved gas flotation. This system offers efficient removal of refractory contaminants from various wastewater types.

The effluent from the MBR system enters the CDOF, where ozone is used as the gas source to remove some COD and ammonia nitrogen. Its unique centrifugal dissolved gas technology can remove suspended solids in the water, improving water quality. The CDOF system has the advantages of small footprint, high treatment efficiency, and simple operation. 

⑥ Tail Gas Treatment Unit

During the leachate treatment process, tail gas containing odorous and harmful gases is generated. The tail gas treatment unit uses catalytic combustion technology to convert harmful components in the tail gas into harmless carbon dioxide and water vapor, ensuring the environmental friendliness of the entire treatment process.

The comprehensive landfill leachate treatment process proposed by the SINOKLE integrates multiple advanced technologies to achieve efficient treatment and resource recovery of leachate. The process has the following advantages: 

① Full-scale process with no concentrated liquid, avoiding secondary pollution; 

② Integrated skid-mounted equipment, CDFU/CDOF operates in a pressurized, sealed environment throughout, with a user-friendly site environment; 

③ Low chemical consumption, minimal sludge (hazardous waste) generation, and simple operation management; 

④ Core treatment equipment has low energy consumption, fast reaction speed, stable performance, high efficiency, and small footprint; 

⑤ Catalysts are modified using atomic deposition technology, super hydrophilic, and not easily polluted or scaled;

⑥ Fully automated, computerized operation with remote monitoring, minimal labor, easy operation and maintenance, and low cost.