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1、Equipment name: Automatic two-stage reverse osmosis +EDI ultra-pure water equipment

2、Specifications and models：HDNRO+EDI- 500L

3、Equipment brand: Wenzhou Haineng wzhdn

4、Product function description:

1. Mechanical filter:

It is mainly used to remove rust, sediment, algae, suspended solids and other impurities in the water, reduce the turbidity of the water, make the turbidity of the water less than 0.5ntu, CODMn less than 1.5mg/l, iron content less than 0.05mg/l, SDI ≤ 5. The control valve can be used for back washing and forward washing at any time to wash off the dirt on its surface, prevent it from blocking and restore its filtering capacity.

2. Activated carbon filter:

Activated carbon has a very strong adsorption and filtration performance, and has a strong adsorption effect on residual chlorine, heterochromatic, peculiar smell, organic matters, etc. in water. As the reverse osmosis membrane is very sensitive to residual chlorine and organics, it is necessary to configure activated carbon to absorb residual chlorine and organics, so that the residual chlorine in the outlet water is ≤ 0.1mg/l, SDI ≤ 4, and the first can meet the water supply requirements of the reverse osmosis membrane. Second, it can greatly improve the original taste of the source water. It can be backwashed at any time through multiple control valves or steam operated butterfly valves to wash away the colloid and other pollutants on the surface, prevent the surface of the activated carbon from being surrounded by impurities, prevent it from blocking, and restore its treatment capacity.

3. Security filter:

After pretreatment, a safety filter is arranged in front of the high-pressure pump to prevent the impurity particles larger than 1um from entering the high-pressure pump and damaging the high-pressure pump and reverse osmosis membrane. The PP filter element (with framework and good strength) is loose outside and tight inside, and the water is filtered from the outside to the inside, which can prolong the time when the filter element is blocked. The upper part has an exhaust valve, which can prevent air from entering the pump and damaging the pump. The lower part has a drain valve, which can discharge the retained impurities at any time.

4. Secondary RO unit:

Reverse osmosis technology is a mature desalination technology in the world at present, and it is also a water treatment technology with wide market application and wide application range. It can filter bacteria, viruses, metal ions, salts, pesticides and all kinds of carcinogens in water precisely. It has low working pressure, large water yield and high desalination rate. It is easy to maintain and design automatic washing device, which can prolong its service life. The design of automatic flushing device can prolong its service life.

5. Terminal filter:

The microporous membrane with absolute pore diameter of 0.22um can completely remove the microorganism and its heat source, ensure the asepsis of water supply and meet the requirements of pharmaceutical water

6. Ultra pure water equipment (electric desalting EDI device):

EDI electric desalting device, as the equipment for ultra pure water production and as the secondary desalting equipment after reverse osmosis equipment, can produce up to 10-18.2m Ω / cm. Therefore, it is widely used in microelectronics industry, semiconductor industry, solar photovoltaic, fine chemical industry and power generation industry, pharmaceutical industry and laboratory. It can also be used for pharmaceutical distilled water, food and beverage production water, boiler make-up water of power plant, and other applications of ultra-high purity water. 　

5. Features:
◇ automatic and manual operation / flushing of secondary RO membrane, optional touch screen control, human-computer interface.
◇ the secondary RO membrane can be cleaned manually in the machine
◇ automatic shutdown of purified water at high water level and automatic startup of low water level

◇ Multi stage high-pressure pump water shortage protection and overload and overpressure protection function

◇ voltage loss, undervoltage, overcurrent, short circuit, open circuit, leakage protection

◇ the equipment is made of stainless steel, fully automatic operation, no need for manual conduct.

Medicine, medical equipment, biological preparation, electronics, electroplating, electrophoresis, battery, vacuum coating, detergent, cosmetics, glue, chemical industry, pigment, surface treatment, brackish water treatment, etc.

And can be applied as follows:

◇ the secondary ro purified water unit, as the pre-stage desalination equipment for ultra-high purity water production and EDI device, has become an excellent combination of ultra-high purity deionized water equipment;

◇ Electronic industry water integrated circuit, silicon wafer, display tube and other electronic components, PCB washing;

◇ pharmaceutical industry water infusion, injection, tablet, biochemical products, equipment cleaning, etc;

◇ ultra pure water for other processes, such as water motorcycle parts, home appliance coating, coated glass, cosmetics, fine chemicals, etc.

1. The incoming water quality shall be municipal tap water or equivalent water source.Inlet water pressure: 0.15-0.4mpa, water temperature 5-40℃

2. Water production technical index: 0.5 ton /h (water temperature 25℃) secondary reverse osmosis +EDI,

(1) Water production standard: in line with national standard A for reverse osmosis equipment (GB/T 19249-2003),

(2) the ultrapure water: resistivity 10-18.25 - M Ω/cm or more, the water temperature is 25 ℃, the TOC: 1-3 PPB, particles (> 0.22 um) < 1 / ml, microbial < 1 cfu/ml,

1. The system equipment is guaranteed free of charge for one year from the date of product acceptance, except for consumable filter material.

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.

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