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China Ultrafiltration Membrane System for Drinking Water Purification - Reliable Suppliers & Factory Solutions
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Products Description
Ultrafiltration is a kind of membrane separation technology between nanofiltration and microfiltration. Ultrafiltration uses a pressure-active membrane to trap colloids, particles and relatively high molecular weight substances in water under the action of external driving force (pressure), while water molecules and small solute particles pass through the membrane separation process. The material with molecular weight of 500-500000 Dalton can be intercepted by screening through micropores on the membrane surface. When the treated water passes through the membrane surface at a certain flow rate with the help of external pressure, water molecules and solutes with molecular weight less than 300-500 pass through the membrane, and particles and macromolecules larger than the membrane pores are intercepted due to the screening effect, so that the water is purified. That is to say, when the water passes through the ultrafiltration membrane, most of the colloidal silicon contained in the water can be removed, and a large amount of organic matter can be removed, so as to achieve the purpose of purification, separation and concentration of the stock solution.
Major Components
1. The separation process does not involve phase changes, with low-pressure pumps serving as the driving force, resulting in minimal energy consumption.
2. Separation can occur at room temperature, making it suitable for heat-sensitive substances.
3. The equipment and process design are simple, facilitating operation, management, and maintenance.
4. The effective membrane area per unit volume is large, ensuring high work efficiency and a reduced footprint.
Operating Conditions
Inlet Water Temperature
10-60°C
Inlet pH
2-11
Operating Pressure
0.11-0.6 MPa
Water Turbidity
< 10 NTU
Inlet TSS
< 20 mg/L
Inlet COD (Gr method)
< 30 mg/L (O₂)
Advantages
1. Efficient Separation
Capable of effectively separating macromolecular substances.
2. Easy Operation
High degree of automation, simplifying operation and maintenance.
3. Environmental Protection and Energy Saving
No chemical reagents required, with low energy consumption.
4. Wide Application Range
Suitable for various liquid separation and concentration processes.
Scope of Application
1. Water Treatment
Used for drinking water purification, sewage treatment, and seawater desalination pretreatment.
2. Food Industry
Concentration of fruit juices, separation of whey proteins, clarification of wines, etc.
3. Pharmaceutical Industry
Separation and purification of proteins, enzymes, vaccines, and other biological products.
4. Chemical Industry
Recovery of valuable substances from wastewater and separation of emulsions.
It is particularly suited for further purification of water containing low levels of impurities (turbidity less than 2-5 degrees). Its applications span industrial water treatment, municipal drinking water projects, beverages, wines, and biopharmaceutical industries.
Frequently Asked Questions
Q: What is ultrafiltration technology?
Ultrafiltration (UF) is a membrane separation technology positioned between nanofiltration and microfiltration. It uses a pressure-driven membrane to trap colloids, particles, and high molecular weight substances while allowing water and small solute particles to pass through.
Q: What size of substances can an ultrafiltration membrane intercept?
It can filter out materials with a molecular weight ranging from 500 to 500,000 Daltons. It effectively removes most colloidal silicon and large organic matters from water.
Q: What are the key operating requirements for this system?
The system requires an inlet water temperature of 10-60°C, pH of 2-11, operating pressure of 0.11-0.6 MPa, water turbidity under 10 NTU, inlet TSS below 20 mg/L, and inlet COD (Gr method) under 30 mg/L.
Q: What are the primary advantages of ultrafiltration over other methods?
It offers efficient macromolecular separation, runs without phase changes at room temperature (highly energy-saving), requires no chemical reagents, and features a simple process design that simplifies operation and maintenance.
Q: In which industries is ultrafiltration widely applied?
It is widely used in water treatment (purification and desalination pretreatment), the food industry (juice and whey concentration), the pharmaceutical industry (protein and vaccine purification), and the chemical industry (wastewater substance recovery).