Ultrafiltration (UF) is a variety of membrane filtration in which forces like pressure or concentration gradients lead to a separation through a semipermeable membrane. Suspended solids and solutes of high molecular weight are retained in the so-called retentate, while water and low molecular weight solutes pass through the membrane in the permeate. This separation process is used in industry and research for purifying and concentrating macromolecular (103 - 106 Da) solutions, especially protein solutions. Ultrafiltration is not fundamentally different from microfiltration. Both of these separate based on size exclusion or particle capture. It is fundamentally different from membrane gas separation, which separate based on different amounts of absorption and different rates of diffusion. Ultrafiltration membranes are defined by the molecular weight cut-off (MWCO) of the membrane used. Ultrafiltration is applied in cross-flow or dead-end mode.

Pre-treatment

Treatment of feed prior to the membrane is essential to prevent damage to the membrane and minimize the effects of fouling which greatly reduce the efficiency of the separation. Types of pre-treatment are often dependent on the type of feed and its quality. For example in wastewater treatment, household waste and other particulates are screened. Other types of pre-treatment common to many UF processes include pH balancing and coagulation. Appropriate sequencing of each pre-treatment phase is crucial in preventing damage to subsequent stages. Pre-treatment can even be employed simply using dosing points.

Filtration of effluent from paper pulp mill
Cheese manufacture, see ultrafiltered milk
Removal of pathogens from milk
Process and waste water treatment
Enzyme recovery
Fruit juice concentration and clarification
Dialysis and other blood treatments
Desalting and solvent-exchange of proteins (via diafiltration)
Laboratory grade manufacturing

Etc. 

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!