seawater purification devices by desalination

Seawater desalination

Flow chart :
Raw water tank—raw water pump—multi-medium filter--active carbon filter –water softner (Sodium Ion Exchanger)—precision filter—RO mainframe(including chemical cleaning device)—ozone generator—finished product water tank

First stage pretreatment.(Sand filter)
The use of multi-medium quartz sand filters, main purpose is to remove the water contains sediment, manganese, rust, colloid material, mechanical impurities, suspended solids and other particles in the above 20UM of substances hazardous to health. The effluent turbidity is less than 0.5NTU, CODMN less than 1.5mg / L, iron content of less than 0.05mg / L, SDI less than or equal to 5. Water filter is a kind of "physical - chemical" process, the water through granular materials when isolated filter water impurities and colloidal suspensions. Filter is an effective water purification and treatment of the main process in the preparation of pure water is an indispensable process.

Second stage pretreatment (Carbon filter)
Activated carbon filters used to remove the pigment in the water, smell, a large number of chemical and biological organisms, reducing the residual value of water and pesticide pollution and other harmful pollutants. The structure of activated carbon filters and quartz sand filters, the difference is placed inside the strong adsorption capacity of activated carbon for removal by the quartz sand filter without the filter out organic material, adsorption of residual chlorine in the water, using water more than less than or equal to chlorine 0.1ML/M3, SDI less than or equal to 4, are strong oxidants chlorine, there are various types of membrane damage, in particular, reverse osmosis membranes are more sensitive to chlorine. In addition, the activation process, the surface of activated carbon to form non-crystalline parts of some oxygen-containing functional groups, these functional groups can have a chemical adsorption of activated carbon catalytic oxidation of bad news, to restore the performance, can effectively remove a number of metal ions in water.

Third stage pretreatment (Resin softener)
Cationic resin used for water softening, primarily to remove hardness of water. The hardness of water is a major calcium (Ca2 +), magnesium (Mg2 +) ion composition, when containing the raw water hardness ions through the resin layer, the water of the Ca2 +, Mg2 + was exchanged resin adsorption, and other objects at the same time the quality of the release of sodium Na + ions flow from the softener in the water is removed from the softened water hardness ions. So as to effectively prevent the reverse osmosis membrane fouling.System can automatically recoil, and so is red.

Fourth stage pretreatment (Micron filter)
Particle size in water to remove fine particles, sand filters can remove very small colloidal particles in the water, so that the turbidity reached 1 degree, but still per milliliter of water for hundreds of thousands of particle size 1-5 microns colloidal particles, the pressure on this filter to remove water after the particle size of 100 microns or less in small particles, to further reduce the turbidity, to meet the next process of the water requirements of the protection of the next long-running processes.

RO system
Using reverse osmosis technology for desalination, reverse osmosis membrane was only 0.001 micron pore size, can be harmful to remove dissolved solids and bacteria, viruses, etc., desalination rate of more than 99.6 percent, in line with national standards to produce pure water, the host section contains the security filter, high-pressure pump and reverse osmosis membrane, security filters for the fourth grade and above pre-treatment systems, high-pressure pump is the host of one of the core equipment for the reverse osmosis membrane elements to provide sufficient pressure to overcome the penetration resistance to pressure and run to meet the needs of a device to achieve the rated water.

Feature:

Seawater desalination is to produce high quality drinking water for drinking or beverage factory, which include sand filter, carbon filter, softener, micron filter and RO system.
1. Raw water pump-- provide the pressure to sand/carbon filter
2. Sand filter-- get rid of turbidity, suspended matter, organic matter, colloid and so on
3. Carbon filter--Remove the color, free chloride, organic matter, harmful matter and so on
4. Micron filter--prevent any deposition of large Particles, some bacteria, and viruses into the RO membrane, The accuracy is 5um, for holding back any large particulates such as large iron, dust, suspended matter, impurity.
5. High pressure pump-- Provide the high pressure to RO membrane, at least 2.0 MPA
6. RO system--RO system is the heart part of pure water plant. The RO systems are capable of removing over 99% of ions, bacteria, particles and 98% of organics and silica, 85 % of B. simply operation and life span.

Established in 1994, Shandong Gretech Water Treatment Co., Ltd., who is the cooperator of world top 500 companies, is located in Jiaxiang Economic Development Zone, Jining City, Shandong Province, covering areas of more than 40,000 square meters. It has four offices in China, including Beijing office, Shanghai office, Wuhan office and Chongqing office. With the development of international trade, Gretech plans to build abroad offices in Southeast Asia.

Gretech devotes to scientific research, production, sales and service of water treatment products, ceramic membrane, ultrafiltration membrane, sea water desalination equipment and fountain etc.. It is one of the largest enterprises in China water treatment industry and the professional high-tech entity engaging in application and promotion of membrane technique.

Gretech has established long-term technical cooperation relationship with Qinghua University, Nanjing University of Chemical Technology and Shanghai University of Engineering Science etc.. There are 35 experts with professional certification, 62 senior engineers and engineers and 3 laboratories, including raw material analysis room, product analysis room and application room in company with complete experimental facilities and advanced properties.

Insisting on providing high-quality products for customers, our company consistently adheres to high standards and strict requirements to production in accordance with ISO9001 and ISO14001. Depending on high-quality products, considerate service and favorable honor, the business of our company spreads all over the whole country and some of our products have been exported abroad, such as Malaysia, Japan, Nigeria, Thailand, Vietnam and Indonesia etc.

Packing Details : Wooden cases or according to customers' requirements

Delivery Details : Shippment after the balance of payment

1. We are the manufacturer, so competitive price, after-sales service, technical support can be provieded. 

2. Water quality test and analysis of the raw water

3. 100% QC inspection before the shipment

4. Supply of chemicals, filter elements, membranes and other consumable spare parts. 

5. One year equipment warranty

6. Overseas services

Q1:What’s your warranty policy?
A1:The Seller will guarantee the equipment for 12 months since the date of starting installation and adjustment.

Q2: What’s your minimum order quantity?
A2: 1 set or by negotiate with each other.

Q3:What package do you use for the product?
A3: Packed in wooden box or according to the customers' requirements.

Q4: Do you have technical instruction if I buy your product?
A4: Please read the user manual carefully for your reference, we have detail instruction on it. If your problems still can not be solved, welcome to contact us for help.

Q5: What is your overseas service?
A5: We will provide high quality overseas service ,our technical staff will be able to provide you with technical support ,for you personally to overseas assembly and test equipment, if you are in need.

Q6: What are your terms of payment?
A6: We accept T/T, L/C.

Q7:What’s your contact way?
A7:Tel:+86-537-6988002

Q8: I am very satisfied after I read your FAQ, how can I start to purchase my order?
A8:Please click the “send” at the bottom of this page or contact our sales on Trade Mange online!