Anti-pollution reverse osmosis device and use method thereof

A reverse osmosis device and reverse osmosis technology, applied in the direction of osmosis/dialysis water/sewage treatment, general water supply saving, sterilization/microdynamic water/sewage treatment, etc., can solve the problem that the water quality of the system is easily affected by individual membrane defects, Can not be cleaned in groups on-line, reverse osmosis equipment is easy to pollute and other problems, to achieve the effect of system defect finding and disposal convenience, improve recovery rate, and increase membrane surface flow rate

Inactive Publication Date: 2012-05-16
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0016] In view of the defects existing in the prior art, the object of the present invention is to provide an anti-pollution reverse osmosis device and its use method to overcome the existing reverse osmosis m

Method used

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  • Anti-pollution reverse osmosis device and use method thereof
  • Anti-pollution reverse osmosis device and use method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0064] The raw water is sewage that meets the national secondary discharge standard. The water volume is 80t / h. After pretreatment, the COD is 80mg / L, the influent conductivity is ≤3000μS / cm, and the hardness (calculated as CaCO 3 Calculated) is 500mg / L, the alkalinity is 200mg / L (as CaCO 3 count).

[0065] An anti-pollution reverse osmosis device, its components include:

[0066] The original water tank 1 is provided with a water inlet pipeline and a water outlet pipeline;

[0067] Booster pump 2, the water inlet is connected to the water outlet pipeline of the original water tank, and the water outlet is connected to the security filter;

[0068] The security filter 3 is provided with a water inlet pipeline and a water outlet pipeline, the water inlet pipeline is connected to the outlet of the booster pump, and the outlet is connected to the water inlet pipeline of the high-pressure pump;

[0069] The dosing port 4 is set on the outlet pipe of the security filter;

[007...

Embodiment 2

[0088] The raw water is pretreated surface water, the water volume is 200t / h, the influent conductivity is ≤800μS / cm, and the hardness (as CaCO 3 Calculated) is 280mg / L, the alkalinity is 150mg / L (as CaCO 3 count).

[0089] An anti-pollution reverse osmosis device, its components include:

[0090] The original water tank 1 is provided with a water inlet pipeline and a water outlet pipeline;

[0091] Booster pump 2, the water inlet is connected to the water outlet pipeline of the original water tank, and the water outlet is connected to the security filter;

[0092] The security filter 3 is provided with a water inlet pipeline and a water outlet pipeline, the water inlet pipeline is connected to the outlet of the booster pump, and the outlet is connected to the water inlet pipeline of the high-pressure pump;

[0093] The dosing port 4 is set on the outlet pipe of the security filter;

[0094] High-pressure pump 5, the water inlet is connected to the water outlet pipeline of...

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Abstract

The invention relates to an anti-pollution reverse osmosis device and a use method thereof. The anti-pollution reverse osmosis device is added with desalinated water circulating pumps in a connection way that a plurality of groups of pumps are in parallel based on the combination and permutation of reverse osmosis membranes, wherein part of desalinated water returns in the front of the entrance to raise the recovery rate and increase the membrane surface flow velocity. The device sequentially cleans the reverse osmosis membranes in groups by reverse osmosis membranes or cleaning fluid. When the reverse osmosis membranes are working, the reverse osmosis high-pressure pump works at a lower frequency intermittently. The water inflow pressure is also lowered, which is helpful for a pollutant layer adsorbed on the membrane surface to be desorbed from the membrane surface and taken away by the water flow. A reducing agent and antisludging agent feeding hole is arranged behind a security filter core, wherein non-oxidizing bactericides are fed through the medicine feeding hole regularly, and varieties of the non-oxidizing bactericides are changed frequently to prevent microorganisms from producing drug resistance. In comparison with the common reverse osmosis devices, the device disclosed by the invention has a higher membrane surface flow speed and an on-line automatic cleaning function. The device also employs the non-oxidizing bactericides to sterilize regularly such that the device has a better anti-pollution performance.

Description

technical field [0001] The invention relates to the fields of sewage treatment and pure water preparation, in particular to an anti-pollution reverse osmosis device and a use method. Background technique [0002] Reverse osmosis technology is the most advanced membrane separation technology today. The principle is to separate these substances from water under the action of the osmotic pressure higher than that of the solution, based on the fact that other substances cannot pass through the reverse osmosis membrane. Since the membrane pore size of the reverse osmosis membrane is very small (only about 1nm), it can effectively remove dissolved salts, colloids, microorganisms, organic matter, etc. in water (the removal rate is as high as 97-99%). The reverse osmosis membrane filtration system has the advantages of good water quality, low energy consumption, no pollution, simple process, and easy operation. The vast majority of commercial reverse osmosis membranes are standard...

Claims

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Application Information

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IPC IPC(8): C02F1/44C02F1/50
CPCY02A20/131
Inventor 李正琪李井峰谢梓峰王玉杰赵鹏杨永强
Owner CHINA PETROLEUM & CHEM CORP
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