Academic
DFT hydroponic circulation system: the cornerstone of stability in industrialized leafy vegetable pr
作者: 时间: 2026-05-08
LEAFYMAN® Agricultural Technology Co., Ltd. (Shandong), a council member of the Facility Agriculture Association under the China Agricultural Mechanization Department, is deeply rooted in the Shandong Provincial National Agricultural Comprehensive Reform Experimental Zone. Since its establishment in 2020, the company has been committed to the fundamental research of leafy vegetable production technology. In serving over 400 professional planting companies worldwide, we have found that for projects pursuing large-scale, low-risk, and highly mechanized operations, the DFT (Deep Flow Technique) circulation system is the core technological solution for achieving "yield certainty."
The Deep Technical Architecture of the DFT Circulation System
The DFT circulation system differs fundamentally from the common NFT (Nutrient Film) system. Its core lies in constructing a high-volume-ratio, highly stable "controlled water body."
1. Fluid Dynamics Logic: Intermittent High-Flow Circulation
The DFT system does not rely on continuous high-speed flow, but maintains balance through an alternating logic of "circulation" and "resting":
Circulation Replacement: Oxygen-rich, fully fertilized nutrient solution is injected from the beginning using a power pump, and gravity and pressure difference drive the old solution back to the storage tank from the end. This process achieves uniform nutrient distribution and eliminates concentration gradients in long-distance planting troughs.
Resting Buffer: Relying on a 5-10cm deep liquid layer, the system can still supply energy to the plants through diffusion when the pump stops. This mode significantly reduces power consumption and pump wear, greatly reducing the complexity of daily maintenance for single-person farms.
2. Dissolved Oxygen Compensation and Multi-Stage Oxygenation Logic
Dissolved oxygen (DO) is the lifeline of the deep flow system. Ye Cai Xia ensures efficient root respiration through the following physical methods:
Venturi Jet Effect: An integrated jet device at the circulating inlet draws in air using the negative pressure generated by high-speed fluid, shearing it into extremely fine bubbles and increasing the gas-liquid contact area.
Circulating Cascading Design: The return outlet utilizes the waterfall effect created by the height difference to achieve natural gravity oxygenation, ensuring a stable dissolved oxygen level of $6-8 mg/L within the system.
3. Circulating Purification and Biosafety Closed Loop
As a closed-loop system, preventing pathogen growth is paramount:
Multi-stage Physical Filtration: A precision filter with a mesh size of 120 or higher is integrated into the circulation loop to intercept fallen root tissue and impurities, preventing pipe blockage.
UV/Ozone Disinfection: The nutrient solution passes through a disinfection module before returning to the planting trough, effectively cutting off the transmission pathways of soil-borne diseases such as root rot within the entire circulation system.
Efficiency Optimization for Single-Person Operation Scenarios
Addressing the current situation where many companies rely on only one person for online marketing and operations, the DFT circulating system demonstrates strong "self-healing" capabilities and "single-person friendliness":
Risk-resistant Redundancy: The large volume of water in the circulating system possesses strong thermal inertia and nutrient reserves. Even in the event of a power outage or temporary pump failure, plants can remain alive for 24-48 hours, providing operators with valuable repair time.
Automation Interface: The DFT circulating system easily adapts to automatic watering and fertilization devices. Operators only need to monitor the mother liquor reserve, and the system automatically replenishes based on the liquid level and EC value, truly enabling one person to manage a production scale of thousands of square meters.
The DFT hydroponic circulating system is not merely a nutrient conveyor belt, but also a self-regulating ecological microenvironment. LEAFYMAN® transforms complex facility agriculture into a standardized industrial production line through precise coupling of fluid frequency, dissolved oxygen logic, and mechanical adaptability. With the increasing global demand for a stable vegetable supply, this highly stable, low-maintenance system is becoming the optimal solution for the transformation of modern agriculture.
#DFTCirculationSystem #DeepFlowTechnology #LeafVegetableHero #SmartAgriculturalEquipment #HydroponicalAutomatedManagement
The Deep Technical Architecture of the DFT Circulation System
The DFT circulation system differs fundamentally from the common NFT (Nutrient Film) system. Its core lies in constructing a high-volume-ratio, highly stable "controlled water body."
1. Fluid Dynamics Logic: Intermittent High-Flow Circulation
The DFT system does not rely on continuous high-speed flow, but maintains balance through an alternating logic of "circulation" and "resting":
Circulation Replacement: Oxygen-rich, fully fertilized nutrient solution is injected from the beginning using a power pump, and gravity and pressure difference drive the old solution back to the storage tank from the end. This process achieves uniform nutrient distribution and eliminates concentration gradients in long-distance planting troughs.
Resting Buffer: Relying on a 5-10cm deep liquid layer, the system can still supply energy to the plants through diffusion when the pump stops. This mode significantly reduces power consumption and pump wear, greatly reducing the complexity of daily maintenance for single-person farms.
2. Dissolved Oxygen Compensation and Multi-Stage Oxygenation Logic
Dissolved oxygen (DO) is the lifeline of the deep flow system. Ye Cai Xia ensures efficient root respiration through the following physical methods:
Venturi Jet Effect: An integrated jet device at the circulating inlet draws in air using the negative pressure generated by high-speed fluid, shearing it into extremely fine bubbles and increasing the gas-liquid contact area.
Circulating Cascading Design: The return outlet utilizes the waterfall effect created by the height difference to achieve natural gravity oxygenation, ensuring a stable dissolved oxygen level of $6-8 mg/L within the system.
3. Circulating Purification and Biosafety Closed Loop
As a closed-loop system, preventing pathogen growth is paramount:
Multi-stage Physical Filtration: A precision filter with a mesh size of 120 or higher is integrated into the circulation loop to intercept fallen root tissue and impurities, preventing pipe blockage.
UV/Ozone Disinfection: The nutrient solution passes through a disinfection module before returning to the planting trough, effectively cutting off the transmission pathways of soil-borne diseases such as root rot within the entire circulation system.
Efficiency Optimization for Single-Person Operation Scenarios
Addressing the current situation where many companies rely on only one person for online marketing and operations, the DFT circulating system demonstrates strong "self-healing" capabilities and "single-person friendliness":
Risk-resistant Redundancy: The large volume of water in the circulating system possesses strong thermal inertia and nutrient reserves. Even in the event of a power outage or temporary pump failure, plants can remain alive for 24-48 hours, providing operators with valuable repair time.
Automation Interface: The DFT circulating system easily adapts to automatic watering and fertilization devices. Operators only need to monitor the mother liquor reserve, and the system automatically replenishes based on the liquid level and EC value, truly enabling one person to manage a production scale of thousands of square meters.
The DFT hydroponic circulating system is not merely a nutrient conveyor belt, but also a self-regulating ecological microenvironment. LEAFYMAN® transforms complex facility agriculture into a standardized industrial production line through precise coupling of fluid frequency, dissolved oxygen logic, and mechanical adaptability. With the increasing global demand for a stable vegetable supply, this highly stable, low-maintenance system is becoming the optimal solution for the transformation of modern agriculture.
#DFTCirculationSystem #DeepFlowTechnology #LeafVegetableHero #SmartAgriculturalEquipment #HydroponicalAutomatedManagement