Active Member
|
[China]
Address: No. 2 Xiuyan Road, Hangzhou City, Zhejiang Province
Contact name:Robert Wang
Hangzhou Haina Environmental Protection Tech Co., Ltd. |
|
Industrial 8-inch Ultra Low-Pressure RO Membrane for Water Treatment Purifier RO System
All raw water contains microorganisms: bacteria, algae, fungi, viruses and other higher organisms. When the microorganisms in the feed water enter the reverse osmosis and nanofiltration systems, they will settle and condense on the surface of the membrane to form a biofilm, which will form a biological fouling when the biofilm reaches a certain thickness. The biological fouling of membrane elements will seriously affect the performance of the reverse osmosis system, and the pressure difference between the influent and the concentrated water will increase rapidly. Due to the barrier of the microbial membrane, the effective pressure of the system operation will also be reduced, resulting in a decrease in the system desalination rate.
Characteristics of reverse osmosis membrane biofouling
The biofouling of reverse osmosis membranes is difficult to thoroughly clean mainly because the content of microorganisms including bacteria, algae, fungi and their viruses in water is very large and grows rapidly. Once a bacterial community appears on the membrane surface, a slime film will soon be formed. At the same time, the biological slime film is insoluble in acid and insoluble in alkali, and cannot be easily removed even if it is frequently washed with cement. However, if the biological fouling of the reverse osmosis membrane is not cleaned in time, it will easily cause the system inlet water pressure to increase, the pressure difference to increase, and the water production to decrease. Generally speaking, the first reverse osmosis membrane is seriously polluted by organisms, and the membrane surface and flow channel pollution will occur at the same time. Once we find that any position of our reverse osmosis membrane is generally because the pressure difference of the front-end element increases rapidly, the feed water pressure rises rapidly , if the salt transmission rate generally increases, it is necessary to consider whether the membrane element is subject to biological fouling.
Performance
| Model Number | Description | 8040-ULP |
| Performance & Test Condition | The Desalination Rate % | 99.2% |
| Water Rate GDP | 10500 | |
| The Test pressure | 150psi | |
| Test solution Temperature | 25± 1ºC | |
| Test Solution Concentration (1:1:1) labeling | 1500ppm | |
| Test solution PH value | 6.5-7.5 | |
| Recovery Of Single-Branch Membrane Element | 15% | |
| Feed water SDI | 5 |
Dimension of Membrane
Operating Limit:
| Maximum Operating Temperature | 113ºF(45ºC) |
| Maximum Working Pressure | 600psi(41.0 bar) |
| The high pressure drop | 15psi (1.0bar) |
| Continuously operating PH range a | 3-10 |
| Short wash PH range (30min) b | 2-12 |
| Maximum feed water SDI | SDI 5 |
| Tolerance Of Free Chlorine | <0.1ppm |
| Maximum pressure drop for single membrane element | 15psi(0.1Mpa) |
1.When PH is above 10, the Maximum Temperature of Continuous Operation is 35ºC.
2.Under certain conditions, the presence of free chlorine and other oxidants in the water may cause serious membrane damage, which doesn't belong to product warranty range.
FAQ:
1. Q: Do you provide samples ? is it free or extra ?
A: Yes, we could offer the sample for free charge but do not pay
the cost of freight.
2. Q: Should we use our logo/brand?
A: Yes, OEM is absolutely supported. But for some items quatity is
500pcs.
3. Q: What is the filtering accuracy of RO membrane?
A: RO meembran filtering accuracy is 0.0001um.
4.RO membrene desalination rate and service life ?
A: RO meembran desalination rate more 98%,service life according to
water quality 2-3years
5. Q: What is the payment?
A: Usually we offer two payment terms: by Alibaba or by TT. L/C and
D/A.
6. Q: How long time have your company in water treatment?
A: We have more than 18 years experience in water treatment
equipment/water treatment solution.
