gd55光大彩票

1、 Equipment name: automatic reverse osmosis desalination equipment

2、 Specification and model: hdnro-0.75t

3、 Equipment brand: Wenzhou Haineng wzhdn

4、 Product Description:

The basic principle of reverse osmosis desalination is that the anion exchange membrane only allows anions to pass through, blocks the passage of cations, and the cation exchange membrane only allows cations to pass through. Under the effect of external DC electric field, the ions in water conduct directional migration, so that most of the ions in one way of water migrate to another. The basis is as follows: 1. The selective permeability of the semi permeable membrane, that is to say, water is selectively allowed to pass through and salt is not allowed to pass through; 2. The external pressure of the salt water chamber is greater than the osmotic pressure of the salt water chamber and the fresh water chamber, which provides the driving force for the movement of water from the salt water chamber to the fresh water chamber.

5、Process principle:

gd55光大彩票1. RO device is a key equipment in the desalting system. The device uses membrane separation technology to remove most ions and SiO2 in water, greatly reducing TDS and reducing the operation load of subsequent desalting equipment. Ro is to pass part of the raw water through the membrane in the direction perpendicular to the membrane, the salt and colloidal substances in the water will be concentrated on the membrane surface, and the remaining part of the raw water will take away the concentrated substances in the direction parallel to the membrane, and self-cleaning will be carried out during the operation.

2. The larger the water flux and the higher the recovery rate of the membrane element, the higher the concentration degree of the membrane surface. Because of the concentration effect, the material solubility on the membrane surface is different from the material concentration in the main water flow, resulting in concentration polarization phenomenon. Concentration polarization will make the concentration of salt on the membrane surface high, increase the osmotic pressure of the membrane, increase the salt transmittance, and require more energy consumption to improve the pressure of water supply. At this time, the cleaning method should be used for recovery.

gd55光大彩票6、 System features:

1. Unattended, stable water quality. In RO-EDI desalting system, the effluent quality is stable and there is no periodic change like mixed bed.

2. No acid and alkali, no environmental pollution. The traditional desalination system adopts the ion-exchange method for desalination. Whether one-stage double bed (cation bed or anion bed) or two-stage double bed or mixed bed is used, the resin is regenerated with acid and alkali and reused. In the process of using acid and alkali to regenerate resin, a large number of waste acid and alkali are discharged, which destroys the ecological balance of water system. However, RO-EDI desalination system is used, which does not use acid and alkali in the operation process.

3. It can be produced continuously without standby device. RO in RO-EDI desalination system is a continuous operation equipment. EDI components adopt membrane blocks with each capacity of 2-3th, and then expand the capacity in parallel, and there is no need for backup device. This solves the problem that the original ion exchange equipment needs to be stopped for regeneration and has backup.

gd55光大彩票4. There are requirements for water inflow of RO equipment and EDI equipment. The water quality requirements of RO equipment vary with the membrane. If the water quality fails to meet the requirements, appropriate pretreatment methods shall be adopted to improve the water quality. In addition to coagulation and sedimentation treatment, pretreatment includes multi-media filtration, active carbon filtration and precision filtration. Sometimes, in order to prevent RO membrane from blocking, high hardness water should be softened.

5. Small floor area and low operation cost.

Electronic, electroplating, electrophoresis, battery, vacuum coating, detergent, cosmetics, glue, chemical industry, pigment, surface treatment, brackish water treatment, etc. And can be applied as follows:

◇ RO pure water device is the primary desalting equipment for ultra-high pure water production.

◇ electronic industry water IC, silicon wafer, display tube and other electronic components, PCB washing water

gd55光大彩票◇ pharmaceutical industry water infusion, injection, tablet, biochemical products, equipment cleaning, etc;

◇ pure water is used for other process water motorcycle parts, home appliance coating, coated glass, cosmetics, fine chemicals, etc.

1. The influent water quality is urban tap water or equivalent.

2. Technical indicators of water production:

   （1) Water production flow: 0.75 t /h (water temperature 25 ℃) primary reverse osmosis

gd55光大彩票     (2) Water production standard: in accordance with national standard a for reverse osmosis equipment design (GB / t19249-2003)

gd55光大彩票     (3) In line with the national industrial deionization water quality standard cj94-2005

     (4) Conductivity ≤ 5 μ M / cm (conductivity of raw water ≤ 1000 μ M / cm)

1. The system equipment is entitled to one-year free warranty, the warranty date is calculated from the date of product acceptance, and the consumable filter material is not listed here.
2. In case of any equipment quality problem (except caused by misoperation or unforeseen factors) during the warranty period, the supplier shall repair it free of charge and replace the damaged parts.
3. After the expiration of the warranty period, only a certain material fee and appropriate technical service fee will be charged.
4. In case of system operation failure which cannot be solved by itself or by telephone, our technical maintenance personnel shall make solutions (including temporary measures) and schedule within 24 hours after receiving the written notice from the demander and report to the competent leaders of both parties.
5. After the delivery of the equipment, our company will have engineers to pay a return visit to understand the operation of the equipment and provide technical services in a timely manner. Users are welcome to ask any technical questions, and we will reply in time.

① the user shall provide detailed data of raw water test, so that our company can carry out relevant selection and arrangement calculation.
② the user shall explain the water quality requirements, use and water yield of the produced water.
③ our company has many types of pressure vessels, membranes, accessories, etc. if the user gives special instructions, we will try our best to meet the requirements.
④ our company provides installation and debugging for the designed and sold equipment and training for the user's operation personnel.
⑤ our company implements the principle of one-year equipment warranty and lifelong service for users, and establishes archives for tracking service to ensure the quality level.

gd55光大彩票If the above equipment fails to meet your requirements, please contact us, and we will formulate a detailed engineering plan based on your actual situation, to achieve a low-cost, high efficiency and scientific process combination, so that the water production can meet your ideal requirements.