DTRO Disc Tube Reverse Osmosis Equipment

DTRO Disc Tube Reverse Osmosis Equipment Product Introduction

DTRO (Disc Tube Reverse Osmosis) is a specialized structural form of reverse osmosis technology, employing a disc-type membrane and open-channel design. Compared with traditional spiral-wound reverse osmosis, it offers stronger anti-fouling capability and higher operating pressure, and can directly treat wastewater with high concentration, high pollution, and high suspended solids. Jinganlan DTRO equipment uses high-quality disc tube membrane modules, integrating high-pressure pumps, automatic control systems, and cleaning systems. It is widely used in landfill leachate treatment, industrial high-salinity wastewater concentration, zero-liquid-discharge brine reduction, and other scenarios, making it a core process equipment in the field of difficult-to-treat wastewater.

Working Principle

The DTRO membrane module is formed by alternately stacking multiple layers of disc-shaped reverse osmosis membranes and flow guide discs. After raw water enters the membrane module at high pressure, it flows in a turbulent state along the open wide channels formed by the guide discs, making it difficult for pollutants to deposit on the membrane surface. Water molecules permeate through the membranes and collect to produce clean water, while pollutants and salts are discharged from the other end of the membrane module along with the concentrate. The open-channel design and turbulent flow greatly reduce the membrane fouling rate, allowing direct treatment of wastewater with extremely high SS and COD concentrations, with far lower feedwater pretreatment requirements than traditional spiral-wound reverse osmosis.

Core Technical Advantages

1. Strong anti-fouling capability, suitable for highly polluted wastewater. With the open wide-channel design, the influent suspended solids concentration can reach over 500 mg/L, allowing direct treatment of landfill leachate, high-concentration industrial wastewater, and other highly polluted water bodies without complex pretreatment. The turbulent state on the membrane surface reduces pollutant adhesion, resulting in a fouling rate far lower than spiral-wound RO and a longer operating cycle.
   

2. High operating pressure, large concentration factor. It can operate at high pressures of 30–160 bar, treat high-salinity wastewater, and concentrate the TDS of the concentrate to 80,000–120,000 mg/L, greatly reducing the concentrate volume and lowering subsequent evaporation treatment costs. It is a core concentrate reduction unit in zero-liquid-discharge processes.
   

3. Easy maintenance and cleaning, long service life. The membrane module adopts modular assembly, allowing individual replacement of damaged membranes without replacing the entire module, resulting in low maintenance costs. It withstands high-intensity chemical cleaning, with a high flux recovery rate after cleaning. The membrane element service life can reach 3–5 years, far superior to traditional spiral-wound membranes under high-pollution conditions.
   

4. High degree of integration, flexible start-stop. The equipment adopts a skid-mounted integrated design, prefabricated at the factory, enabling short on-site installation and commissioning periods. It supports intermittent operation with flexible start-stop, adapting to project scenarios with large water volume fluctuations, and is particularly suitable for emergency treatment and small-to-medium highly polluted wastewater projects.
   

Applicable Industries and Scenarios

• Landfill leachate treatment: leachate treatment for municipal solid waste landfills and incineration plants, achieving compliant discharge or reuse
  

• Industrial high-salinity wastewater treatment: concentration and volume reduction of high-salinity wastewater from chemical, printing and dyeing, electroplating, coal chemical and other industries
  

• Wastewater zero liquid discharge (ZLD) projects: as the core concentration unit of ZLD processes, significantly reducing the volume of water requiring evaporation treatment and lowering project investment and operating costs
  

• Emergency wastewater treatment: rapid deployment for sudden pollution incidents and temporary wastewater treatment projects
  

• Upgrading of aging wastewater stations: upgrading and retrofitting existing wastewater treatment systems to improve effluent standards
  

Model Selection Guide

The core basis for DTRO equipment selection is the influent water quality, treatment capacity, permeate quality standard and concentration factor requirements:

• Pressure rating: select low-pressure, medium-pressure or high-pressure membrane modules and high-pressure pumps according to the salinity of the influent
  

• Process stages: select single-stage DTRO, two-stage DTRO or a combined DTRO+RO process according to the permeate quality standard and concentration factor
  

• Membrane module configuration: configure the corresponding quantity and specifications of membrane modules according to the treatment capacity, with flexible capacity expansion
  

• Supporting systems: can be paired with pretreatment systems, dosing systems, cleaning systems, and evaporation systems to provide full-process solutions
  

The Jinganlan technical team can customize the optimal DTRO process plan and equipment configuration based on project water quality and treatment objectives, ensuring stable system operation.

Jinganlan Service Support

• Free water quality testing and process assessment, with customized overall DTRO treatment system solutions
  

• Professional team on-site installation and commissioning to ensure stable effluent meeting standards
  

• Supply of full-category consumables including membrane modules, high-pressure pumps, and cleaning chemicals
  

• Can provide full-process solutions for landfill leachate, high-salinity wastewater, and zero liquid discharge
  

• Provide operation and maintenance training and emergency response services to ensure stable system operation