Characteristics of Disc Tube DTRO Reverse Osmosis System
1. The treatment effect does not depend on the biodegradability of the influent, system stability, and high effluent quality;
2. The treatment effect does not depend on the pretreatment process, and open flow channels can treat wastewater with high levels of colloids and suspended solids;
3. The membrane module has a short process, wide flow channels, and special hydraulic conditions that cause turbulent flow of liquid inside the membrane column, greatly reducing the phenomena of membrane surface fouling, pollution, and concentration polarization;
4. Pollution is easy to remove, especially for biological pollution where the removal effect is more significant;
5. Due to the effective avoidance of membrane fouling and pollution by DT membrane components, the lifespan of reverse osmosis membranes is extended. Practical engineering has shown that in leachate treatment, the service life of the first stage DT membrane can be as long as 3 years or even longer, and the production test research of the two-stage DTRO process for treating leachate from garbage can extend to more than 5 years for DT membranes connected to other treatment facilities, which is beyond the reach of general reverse osmosis systems;
6. Standardized membrane module series, flexible assembly, can be installed indoors and in containers, with a small footprint;
7. Low energy consumption and operating costs, controlled by a PLC control system, with a high degree of automation, easy to operate, manage, and maintain.
Disk tube DTRO reverse osmosis requires regular cleaning and maintenance, but attention should be paid to the impact of operating pressure on membrane fouling during the cleaning process. In the initial stage of membrane operation, due to the significant adsorption between the membrane and solutes, increasing the operating pressure can allow more solute molecules to permeate through, thereby reducing membrane fouling. However, the continuous increase in operating pressure will lead to an increase in the deposition rate of colloidal substances on the membrane surface, which further accelerates the rate of membrane fouling. Therefore, in the actual operation process, the determination of operating pressure should be reasonably selected according to the actual situation, and in order to better control membrane flux, corresponding warning values should be set. When the transmembrane pressure difference reaches a certain value, membrane cleaning should be carried out.
