LH-420TD nano titanium dioxide decchlorination resin

TiO2 Nanomaterials, as a semiconductor material with advanced catalytic degradation with great potential, can directly use the photon energy to deeply degrade pollutants at room temperature and pressure, the CO2 reduction, N2 fixation, catalytic H2, etc. nano TiO2, with its excellent performance, stability and environmental protection characteristics, has attracted much attention in the field of environment and energy. However, nano-TiO 2 itself cannot be widely used in depth due to its large band gap width, small response range to visible light, low solar energy utilization efficiency, and weak degree of photoelectric conversion.

Nanotitanium dioxide itself has some potential in dechlorination, but usually requires combination with materials such as specific resins to improve dechlorination or achieve better applications.

Our LH-420TD resin is a class of polymer materials with ion exchange function, which can remove or separate specific ions by exchange reaction with ions in solution. In the process of dechlorination, ion exchange resin can exchange reaction with chlorine-containing ions and adsorb chloride ions to the resin, so as to achieve the purpose of dechlorination.

-When nano TiO 2 is combined with an ion exchange resin, nano TiO 2 can be used as an auxiliary material to enhance the adsorption or catalytic properties of the resin.

For example, the high specific surface area and special surface properties of nano titanium dioxide can increase the contact area with the chloride ion and improve the chlorine removal efficiency; at the same time, nano titanium dioxide can also catalyze the redox reaction of chloride ion under certain conditions to convert the chloride ion into other harmless substances and further improve the chlorine removal effect.

LH-420TD NM TiO 2 removal resin is used as follows:

1. Preparation for work

-Resin selection and inspection: before use, check whether the resin is damaged, damp, etc. If there is abnormal, replace it in time.

-Equipment preparation: Prepare ion exchange column or corresponding water treatment equipment to ensure that the equipment is clean, clean and operates normally. The material of the ion exchange column should be adapted to the chemical properties of the resin and the treated water to avoid chemical reactions.

-Water sample pretreatment: If the water to be treated contains a large amount of suspension, sediment or other impurities, pretreatment, such as filtration, precipitation, etc., needs to prevent these impurities from blocking the resin or affecting the effect of chlorine removal.

2. Resin-Filling

-Resin immersion: the LH-420TD nano titanium dioxide dechlorination special resin in the appropriate amount of DI water or pure water immersion for a period of time, generally 2-4 hours, so that it fully absorb water expansion, in order to better fill into the ion exchange column.

- Filling operation: slowly pour the soaked resin into the ion exchange column, pay attention to uniform filling, to avoid resin accumulation or gap. During the loading process, the outer wall of the ion exchange column can be gently struck to make the resin filling more tightly packed.

3. Run for dechlorination

-Feed water: pass the water to be treated through the ion exchange column at the appropriate flow rate. The choice of flow rate should be determined according to the performance of the resin, the size of the column and the treatment requirements, and generally control the flow rate of 5-20 times the volume of the column per hour.

-Chloridination process: When water passes through the resin layer, the chloride ions in the water exchange with the active group on the resin, and the chloride ions are adsorbed to the resin, while other ions on the resin enter the water. The resin-treated water flows out from the outlet of the ion exchange column, and the chlorine content in the water is greatly reduced.

4. Monitoring and maintenance

-Regular monitoring: During the operation process, the treated water needs to be sampled and tested regularly to monitor whether the chlorine content meets the requirements. At the same time, should also pay attention to water flow, pressure and other parameters to ensure the normal operation of the system.

- Resin regeneration: when the resin adsorption chloride ions to the saturation state, the chlorine effect will be significantly reduced, then the need to regenerate the resin. The regeneration solution generally uses high concentration of sodium chloride solution or other suitable regeneration agent, the regeneration solution through the ion exchange column in the opposite direction, so that the chloride ions on the resin are replaced, restore the dechlorination capacity of the resin. The frequency of regeneration depends on the chlorine content of the treated water, the amount of water, and the properties of the resin.

5. Safety precautions

-Operators protection: during the operation, operators should wear appropriate protective equipment, such as gloves and goggles, etc., to avoid contact with resin and treatment water, to prevent harm to the body.

-Chemical Storage and Use: Chemicals such as recycled fluid should be stored in a cool, dry, well-ventilated place, far away from fire sources and flammable materials. When using chemicals, we should strictly follow the operating procedures to avoid leakage, splashing and other accidents.