Active Member
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[China]
Address: No. 2 Xiuyan Road, Hangzhou City, Zhejiang Province
Contact name:Robert Wang
Hangzhou Haina Environmental Protection Tech Co., Ltd. |
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Industrial 8-inch Extra Low-Pressure RO Membrane for Water Treatment Purifier System
How to clean reverse osmosis membrane?
It can be cleaned with sodium hypochlorite and formaldehyde solution. For biological pollution, different treatment measures should be taken depending on the material of the reverse osmosis membrane. The aromatic polyamide membrane can be cleaned with a 1% concentration formaldehyde solution. residual chlorine to prevent bacteria from multiplying. For the cleaning of reverse osmosis membrane biological fouling, we can mainly reduce the biological content of raw water as much as possible in the pretreatment stage. The conventional cleaning methods that we can usually use include chlorine or hypochlorite, ozone, ultraviolet rays, etc. . Non-oxidizing bactericides such as DBNPA or isothiazolinone can also be used to irritate the reverse osmosis membrane system. At the same time, what we need to pay attention to is that once we find that the reverse osmosis membrane can be biofouled, once it is sterilized and chemically cleaned in time, it can prevent these organisms from multiplying and increase the degree of pollution to the membrane elements. And we use one reverse osmosis membrane biological fouling cleaning method for a period of time, try to replace another method to operate, which can prevent the biological production of pharmaceutical antibodies and reduce the cleaning effect.
Performance
| model | Stable rejection rate(%) | average permeate flowGPD(m3/d) | test condition | ||
| operation pressure psi(Mpa) | test liquid NaCl(ppm) | recovery rate (%) | |||
| 4040-XLP | 98.5 | 2400(9.12) | 100(0.68) | 500 | 15 |
| 4040-ULP | 99.2 | 2400(9.12) | 150(1.02) | 1500 | 15 |
| 4040-LP | 99.5 | 2400(9.12) | 225(1.53) | 2000 | 15 |
| 8040-XLP | 98.5 | 10500(39.9) | 100(0.68) | 500 | 15 |
| 8040-ULP | 99.2 | 10500(39.9) | 150(1.02) | 1500 | 15 |
| 8040-LP | 99.5 | 10500(39.9) | 225(1.53) | 2000 | 15 |
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.
