Product Description
Introduction to Membrane Technology
Membrane liquid separation technology can generally be divided into four categories based on different operating pressures and the average pore size of the membrane used: microfiltration (MF), ultrafiltration (UF), nanofiltration (NF), and reverse osmosis (RO), and their filtration accuracy is increasing in the above order.
Microfiltration (MF)
Microfiltration can intercept particles between 0.1 and 1 micrometer, and the microfiltration membrane allows large organic molecules and soluble solids (inorganic salts) to pass through, but can block the passage of suspended solids, bacteria, some viruses, and large-scale colloids.
Ultrafiltration (UF)
Ultrafiltration can intercept particles and impurities between 0.002 and 0.1 microns. The ultrafiltration membrane allows small molecule substances and soluble solids (inorganic salts) to pass through, but it will effectively block colloids, proteins, microorganisms, and large molecule organic matter.
Nanofiltration (NF)
Nanofiltration is a special and promising type of separation membrane, named after its ability to retain substances of approximately 1 nanometer (0.001 micrometer) in size. The operating range of nanofiltration is between ultrafiltration and reverse osmosis, with a molecular weight of approximately 200-400 for organic matter and a ability to retain soluble salts of 20-98%. The removal rate of monovalent anionic salt solutions is lower than that of high valent anionic salt solutions, such as sodium chloride and calcium chloride, which have a removal rate of 20-80%, while the removal rate of magnesium sulfate and sodium sulfate is 90-98%. Nanofiltration membranes are generally used to remove organic matter and chromaticity from surface water, remove hardness and radioactive radium from well water, partially remove soluble salts, concentrate food, and separate useful substances from pharmaceuticals.
Reverse Osmosis (RO)
Reverse osmosis is the most precise membrane liquid separation technology, which can block all soluble salts and organic matter with a molecular weight greater than 100, but allows water molecules to pass through. The desalination rate of cellulose acetate reverse osmosis membrane can generally be greater than 95%, and the desalination rate of reverse osmosis composite membrane is generally greater than 98%. They are widely used in seawater and brackish water desalination, boiler feedwater, industrial pure water and electronic grade ultra pure water preparation, drinking pure water production, wastewater treatment and special separation processes. The use of reverse osmosis before ion exchange can significantly reduce operating costs and wastewater discharge.
Membrane bioreactor (MBR) technology is a new technology that combines membrane separation technology with wastewater biological treatment technology. It combines membrane separation unit with biological treatment unit, replacing the secondary sedimentation tank and subsequent flocculation filtration system in traditional activated sludge process. Since the 21st century, with the development of membrane separation technology, sewage resource utilization technology has achieved revolutionary progress. The emergence of MBR technology is an important technological breakthrough in the field of sewage treatment, which has changed the situation of poor effluent quality in secondary sewage treatment for decades and the inability to directly achieve regeneration and utilization. MBR technology is undoubtedly the preferred alternative to traditional sewage treatment technology and a reliable technology for achieving wastewater resource utilization.
Specification
Parameters and Characteristics of Membrane
Table 1 Membrane Performance Parameters
| Materials |
PVDF/PTFE |
| Aperture |
0.05-0.4um |
| Shape |
Square |
| Water Production Hole |
Φ50 |
| Operation mode |
Suction type (external water inlet and internal outlet, central water production) |
| Welding method |
Ultrasonic welding |
Characteristics of membrane elements:
1) Small Square Shape : High utilization rate of membrane.
2) Intermediate water production: short flow channel, high flux, low transmembrane pressure difference, high water production efficiency, and obvious energy consumption advantages.
3) PP board as support: maintains the flatness of the membrane, and in a fully aerated state, it swings greatly without being easily broken.
Table 3 Common specifications of membrane stacks
| Name |
Spec. |
Size, mm |
Area, m2 |
| IPUF9-4E2 |
2×2 |
1310×670×940 |
50 |
| IPUF9-12E2 |
2×6 |
1320×670×2000 |
150 |
| IPUF9-9E3 |
3×3 |
1310×950×1200 |
112.5 |
| IPUF9-18E3 |
3×6 |
1320×950×2010 |
225 |
| IPUF9-24E4 |
4×6 |
1320×1230×2010 |
300 |
| IPUF9-32E4 |
4×8 |
1320×1230×2520 |
400 |
Company Profile
NEW YUDA Environmental Protection Technology Co., Ltd. is a comprehensive environmental protection enterprise integrating consulting and design, equipment manufacturing, construction, investment and financing, and operation and maintenance management. Its business areas focus on urban and rural environmental governance, industrial and service wastewater treatment, and water supply purification, solid waste treatment and environmental services. The company is committed to providing overall environmental solutions for local governments' rural revitalization strategic projects and enterprises.
1) National Hi-tech Enterprise, Guangxi Famous Brand, Class A Credit Enterprise
2) More than 60 intellectual property rights, including trademarks, software copyrights, utility and invention patents.
3) Strong technical ability, cooperate with Tsinghua University, Tianjin University, Tokyo University,etc.
4) More then 15 years experiences in the industry
5) General contracting qualification of municipal public works construction. Professional contracting qualification of environmental protection engineering
Certifications
FAQ
1. What can you buy from us?
Sewage Treatment Equipment / Water Purifier / Water Purification and so on
2. What service can we provide?
Payment Terms:EXW; FOB; CIF and so on
Payment Way:T/T; L/C
3. What's your delivery time?
Based on different equipment, there is different delivery time.
Usually 7-18 days for reference.
More information feel free to contact :
Before providing details quotation, please kindly help to confirm below details:
1. What's your daily water treatment volume (T)? 2. Is the equipment used to treat domestic sewage or industrial sewage? 3. How many people use? / and where is the use scene? 4. Is there a water ingress test report? 5. What are the requirements for effluent and local discharge standards?
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